diff --git a/chia/consensus/block_body_validation.py b/chia/consensus/block_body_validation.py
index 8e8685275eba..c147089ff717 100644
--- a/chia/consensus/block_body_validation.py
+++ b/chia/consensus/block_body_validation.py
@@ -325,6 +325,7 @@ async def validate_block_body(
                     min(constants.MAX_BLOCK_COST_CLVM, curr.transactions_info.cost),
                     cost_per_byte=constants.COST_PER_BYTE,
                     safe_mode=False,
+                    rust_checker=curr.height > constants.RUST_CONDITION_CHECKER,
                 )
                 removals_in_curr, additions_in_curr = tx_removals_and_additions(curr_npc_result.npc_list)
             else:
diff --git a/chia/consensus/block_creation.py b/chia/consensus/block_creation.py
index 215ecd6dc748..001fb97a36e1 100644
--- a/chia/consensus/block_creation.py
+++ b/chia/consensus/block_creation.py
@@ -127,7 +127,11 @@ def create_foliage(
         if block_generator is not None:
             generator_block_heights_list = block_generator.block_height_list()
             result: NPCResult = get_name_puzzle_conditions(
-                block_generator, constants.MAX_BLOCK_COST_CLVM, cost_per_byte=constants.COST_PER_BYTE, safe_mode=True
+                block_generator,
+                constants.MAX_BLOCK_COST_CLVM,
+                cost_per_byte=constants.COST_PER_BYTE,
+                safe_mode=True,
+                rust_checker=height > constants.RUST_CONDITION_CHECKER,
             )
             cost = calculate_cost_of_program(block_generator.program, result, constants.COST_PER_BYTE)
 
diff --git a/chia/consensus/blockchain.py b/chia/consensus/blockchain.py
index 38ddd4627dec..d868502b1c77 100644
--- a/chia/consensus/blockchain.py
+++ b/chia/consensus/blockchain.py
@@ -208,6 +208,7 @@ class Blockchain(BlockchainInterface):
                         min(self.constants.MAX_BLOCK_COST_CLVM, block.transactions_info.cost),
                         cost_per_byte=self.constants.COST_PER_BYTE,
                         safe_mode=False,
+                        rust_checker=block.height > self.constants.RUST_CONDITION_CHECKER,
                     )
                     removals, tx_additions = tx_removals_and_additions(npc_result.npc_list)
                 else:
@@ -383,6 +384,7 @@ class Blockchain(BlockchainInterface):
                         self.constants.MAX_BLOCK_COST_CLVM,
                         cost_per_byte=self.constants.COST_PER_BYTE,
                         safe_mode=False,
+                        rust_checker=block.height > self.constants.RUST_CONDITION_CHECKER,
                     )
                 tx_removals, tx_additions = tx_removals_and_additions(npc_result.npc_list)
                 return tx_removals, tx_additions
@@ -535,6 +537,7 @@ class Blockchain(BlockchainInterface):
                 min(self.constants.MAX_BLOCK_COST_CLVM, block.transactions_info.cost),
                 cost_per_byte=self.constants.COST_PER_BYTE,
                 safe_mode=False,
+                rust_checker=uint32(prev_height + 1) > self.constants.RUST_CONDITION_CHECKER,
             )
         error_code, cost_result = await validate_block_body(
             self.constants,
diff --git a/chia/consensus/constants.py b/chia/consensus/constants.py
index 7b5d6f50c824..f4a74f011634 100644
--- a/chia/consensus/constants.py
+++ b/chia/consensus/constants.py
@@ -51,6 +51,7 @@ class ConsensusConstants:
     WEIGHT_PROOF_THRESHOLD: uint8
     WEIGHT_PROOF_RECENT_BLOCKS: uint32
     MAX_BLOCK_COUNT_PER_REQUESTS: uint32
+    RUST_CONDITION_CHECKER: uint64
     BLOCKS_CACHE_SIZE: uint32
     NETWORK_TYPE: int
     MAX_GENERATOR_SIZE: uint32
diff --git a/chia/consensus/default_constants.py b/chia/consensus/default_constants.py
index a61529055851..fbee94b1cc43 100644
--- a/chia/consensus/default_constants.py
+++ b/chia/consensus/default_constants.py
@@ -50,6 +50,7 @@ testnet_kwargs = {
     "BLOCKS_CACHE_SIZE": 4608 + (128 * 4),
     "WEIGHT_PROOF_RECENT_BLOCKS": 1000,
     "MAX_BLOCK_COUNT_PER_REQUESTS": 32,  # Allow up to 32 blocks per request
+    "RUST_CONDITION_CHECKER": 730000 + 138000,
     "NETWORK_TYPE": 0,
     "MAX_GENERATOR_SIZE": 1000000,
     "MAX_GENERATOR_REF_LIST_SIZE": 512,  # Number of references allowed in the block generator ref list
diff --git a/chia/consensus/multiprocess_validation.py b/chia/consensus/multiprocess_validation.py
index 78d138d1861e..b7686603bb1c 100644
--- a/chia/consensus/multiprocess_validation.py
+++ b/chia/consensus/multiprocess_validation.py
@@ -82,6 +82,7 @@ def batch_pre_validate_blocks(
                         min(constants.MAX_BLOCK_COST_CLVM, block.transactions_info.cost),
                         cost_per_byte=constants.COST_PER_BYTE,
                         safe_mode=True,
+                        rust_checker=block.height > constants.RUST_CONDITION_CHECKER,
                     )
                     removals, tx_additions = tx_removals_and_additions(npc_result.npc_list)
 
diff --git a/chia/full_node/mempool_check_conditions.py b/chia/full_node/mempool_check_conditions.py
index 7ff7b0d007a9..bf857de480b1 100644
--- a/chia/full_node/mempool_check_conditions.py
+++ b/chia/full_node/mempool_check_conditions.py
@@ -2,6 +2,7 @@ import logging
 import time
 from typing import Tuple, Dict, List, Optional, Set
 from clvm import SExp
+from clvm_rs import STRICT_MODE
 
 from chia.consensus.cost_calculator import NPCResult
 from chia.consensus.condition_costs import ConditionCost
@@ -298,7 +299,7 @@ def parse_condition(cond: SExp, safe_mode: bool) -> Tuple[int, Optional[Conditio
     return cost, cvl
 
 
-def get_name_puzzle_conditions(
+def get_name_puzzle_conditions_python(
     generator: BlockGenerator, max_cost: int, *, cost_per_byte: int, safe_mode: bool
 ) -> NPCResult:
     """
@@ -312,54 +313,102 @@ def get_name_puzzle_conditions(
     are considered failures. This is the mode when accepting transactions into
     the mempool.
     """
-    try:
-        block_program, block_program_args = setup_generator_args(generator)
-        max_cost -= len(bytes(generator.program)) * cost_per_byte
-        if max_cost < 0:
-            return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
-        if safe_mode:
-            clvm_cost, result = GENERATOR_MOD.run_safe_with_cost(max_cost, block_program, block_program_args)
-        else:
-            clvm_cost, result = GENERATOR_MOD.run_with_cost(max_cost, block_program, block_program_args)
+    block_program, block_program_args = setup_generator_args(generator)
+    max_cost -= len(bytes(generator.program)) * cost_per_byte
+    if max_cost < 0:
+        return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
+    if safe_mode:
+        clvm_cost, result = GENERATOR_MOD.run_safe_with_cost(max_cost, block_program, block_program_args)
+    else:
+        clvm_cost, result = GENERATOR_MOD.run_with_cost(max_cost, block_program, block_program_args)
 
-        max_cost -= clvm_cost
-        if max_cost < 0:
-            return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
-        npc_list: List[NPC] = []
+    max_cost -= clvm_cost
+    if max_cost < 0:
+        return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
+    npc_list: List[NPC] = []
 
-        for res in result.first().as_iter():
-            conditions_list: List[ConditionWithArgs] = []
+    for res in result.first().as_iter():
+        conditions_list: List[ConditionWithArgs] = []
 
-            if len(res.first().atom) != 32:
-                raise ValidationError(Err.INVALID_CONDITION)
-            spent_coin_parent_id: bytes32 = res.first().as_atom()
-            res = res.rest()
-            if len(res.first().atom) != 32:
-                raise ValidationError(Err.INVALID_CONDITION)
-            spent_coin_puzzle_hash: bytes32 = res.first().as_atom()
-            res = res.rest()
-            spent_coin_amount: uint64 = uint64(sanitize_int(res.first(), safe_mode))
-            res = res.rest()
-            spent_coin: Coin = Coin(spent_coin_parent_id, spent_coin_puzzle_hash, spent_coin_amount)
+        if len(res.first().atom) != 32:
+            raise ValidationError(Err.INVALID_CONDITION)
+        spent_coin_parent_id: bytes32 = res.first().as_atom()
+        res = res.rest()
+        if len(res.first().atom) != 32:
+            raise ValidationError(Err.INVALID_CONDITION)
+        spent_coin_puzzle_hash: bytes32 = res.first().as_atom()
+        res = res.rest()
+        spent_coin_amount: uint64 = uint64(sanitize_int(res.first(), safe_mode))
+        res = res.rest()
+        spent_coin: Coin = Coin(spent_coin_parent_id, spent_coin_puzzle_hash, spent_coin_amount)
 
-            for cond in res.first().as_iter():
-                cost, cvl = parse_condition(cond, safe_mode)
-                max_cost -= cost
-                if max_cost < 0:
-                    return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
-                if cvl is not None:
-                    conditions_list.append(cvl)
+        for cond in res.first().as_iter():
+            cost, cvl = parse_condition(cond, safe_mode)
+            max_cost -= cost
+            if max_cost < 0:
+                return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
+            if cvl is not None:
+                conditions_list.append(cvl)
 
-            conditions_dict = conditions_by_opcode(conditions_list)
-            if conditions_dict is None:
-                conditions_dict = {}
-            npc_list.append(
-                NPC(spent_coin.name(), spent_coin.puzzle_hash, [(a, b) for a, b in conditions_dict.items()])
-            )
+        conditions_dict = conditions_by_opcode(conditions_list)
+        if conditions_dict is None:
+            conditions_dict = {}
+        npc_list.append(NPC(spent_coin.name(), spent_coin.puzzle_hash, [(a, b) for a, b in conditions_dict.items()]))
+    return NPCResult(None, npc_list, uint64(clvm_cost))
+
+
+def get_name_puzzle_conditions_rust(
+    generator: BlockGenerator, max_cost: int, *, cost_per_byte: int, safe_mode: bool
+) -> NPCResult:
+    block_program, block_program_args = setup_generator_args(generator)
+    max_cost -= len(bytes(generator.program)) * cost_per_byte
+    if max_cost < 0:
+        return NPCResult(uint16(Err.INVALID_BLOCK_COST.value), [], uint64(0))
+
+    flags = STRICT_MODE if safe_mode else 0
+    err, result, clvm_cost = GENERATOR_MOD.run_as_generator(max_cost, flags, block_program, block_program_args)
+    if err is not None:
+        return NPCResult(uint16(err), [], uint64(0))
+    else:
+        npc_list = []
+        for r in result:
+            conditions = []
+            for c in r.conditions:
+                cwa = []
+                for cond_list in c[1]:
+                    cwa.append(ConditionWithArgs(ConditionOpcode(bytes([cond_list.opcode])), cond_list.vars))
+                conditions.append((ConditionOpcode(bytes([c[0]])), cwa))
+            npc_list.append(NPC(r.coin_name, r.puzzle_hash, conditions))
         return NPCResult(None, npc_list, uint64(clvm_cost))
+
+
+def get_name_puzzle_conditions(
+    generator: BlockGenerator, max_cost: int, *, cost_per_byte: int, safe_mode: bool, rust_checker: bool
+) -> NPCResult:
+    """
+    This executes the generator program and returns the coins and their
+    conditions. If the cost of the program (size, CLVM execution and conditions)
+    exceed max_cost, the function fails. In order to accurately take the size
+    of the program into account when calculating cost, cost_per_byte must be
+    specified.
+    safe_mode determines whether the clvm program and conditions are executed in
+    strict mode or not. When in safe/strict mode, unknow operations or conditions
+    are considered failures. This is the mode when accepting transactions into
+    the mempool.
+    """
+    try:
+        if rust_checker:
+            return get_name_puzzle_conditions_rust(
+                generator, max_cost, cost_per_byte=cost_per_byte, safe_mode=safe_mode
+            )
+        else:
+            return get_name_puzzle_conditions_python(
+                generator, max_cost, cost_per_byte=cost_per_byte, safe_mode=safe_mode
+            )
     except ValidationError as e:
         return NPCResult(uint16(e.code.value), [], uint64(0))
-    except Exception:
+    except Exception as e:
+        log.debug(f"get_name_puzzle_condition failed: {e}")
         return NPCResult(uint16(Err.GENERATOR_RUNTIME_ERROR.value), [], uint64(0))
 
 
diff --git a/chia/full_node/mempool_manager.py b/chia/full_node/mempool_manager.py
index 989906c4fbb2..cfe2bddea660 100644
--- a/chia/full_node/mempool_manager.py
+++ b/chia/full_node/mempool_manager.py
@@ -42,7 +42,9 @@ log = logging.getLogger(__name__)
 def get_npc_multiprocess(spend_bundle_bytes: bytes, max_cost: int, cost_per_byte: int) -> bytes:
     program = simple_solution_generator(SpendBundle.from_bytes(spend_bundle_bytes))
     # npc contains names of the coins removed, puzzle_hashes and their spend conditions
-    return bytes(get_name_puzzle_conditions(program, max_cost, cost_per_byte=cost_per_byte, safe_mode=True))
+    return bytes(
+        get_name_puzzle_conditions(program, max_cost, cost_per_byte=cost_per_byte, safe_mode=True, rust_checker=True)
+    )
 
 
 class MempoolManager:
diff --git a/chia/types/blockchain_format/program.py b/chia/types/blockchain_format/program.py
index c62187bd2111..41987b2b5646 100644
--- a/chia/types/blockchain_format/program.py
+++ b/chia/types/blockchain_format/program.py
@@ -1,5 +1,5 @@
 import io
-from typing import List, Set, Tuple
+from typing import List, Set, Tuple, Optional, Any
 
 from clvm import KEYWORD_FROM_ATOM, KEYWORD_TO_ATOM, SExp
 from clvm import run_program as default_run_program
@@ -7,7 +7,7 @@ from clvm.casts import int_from_bytes
 from clvm.EvalError import EvalError
 from clvm.operators import OP_REWRITE, OPERATOR_LOOKUP
 from clvm.serialize import sexp_from_stream, sexp_to_stream
-from clvm_rs import STRICT_MODE, deserialize_and_run_program2, serialized_length
+from clvm_rs import STRICT_MODE, deserialize_and_run_program2, serialized_length, run_generator
 from clvm_tools.curry import curry, uncurry
 
 from chia.types.blockchain_format.sized_bytes import bytes32
@@ -224,6 +224,31 @@ class SerializedProgram:
     def run_with_cost(self, max_cost: int, *args) -> Tuple[int, Program]:
         return self._run(max_cost, 0, *args)
 
+    def run_as_generator(self, max_cost: int, flags: int, *args) -> Tuple[Optional[int], List[Any], int]:
+        serialized_args = b""
+        if len(args) > 1:
+            # when we have more than one argument, serialize them into a list
+            for a in args:
+                serialized_args += b"\xff"
+                serialized_args += _serialize(a)
+            serialized_args += b"\x80"
+        else:
+            serialized_args += _serialize(args[0])
+
+        native_opcode_names_by_opcode = dict(
+            ("op_%s" % OP_REWRITE.get(k, k), op) for op, k in KEYWORD_FROM_ATOM.items() if k not in "qa."
+        )
+        err, npc_list, cost = run_generator(
+            self._buf,
+            serialized_args,
+            KEYWORD_TO_ATOM["q"][0],
+            KEYWORD_TO_ATOM["a"][0],
+            native_opcode_names_by_opcode,
+            max_cost,
+            flags,
+        )
+        return None if err == 0 else err, npc_list, cost
+
     def _run(self, max_cost: int, flags, *args) -> Tuple[int, Program]:
         # when multiple arguments are passed, concatenate them into a serialized
         # buffer. Some arguments may already be in serialized form (e.g.
diff --git a/chia/wallet/cc_wallet/cc_wallet.py b/chia/wallet/cc_wallet/cc_wallet.py
index d5c1af2e0437..a3e4729cf1e5 100644
--- a/chia/wallet/cc_wallet/cc_wallet.py
+++ b/chia/wallet/cc_wallet/cc_wallet.py
@@ -250,6 +250,7 @@ class CCWallet:
                 self.wallet_state_manager.constants.MAX_BLOCK_COST_CLVM,
                 cost_per_byte=self.wallet_state_manager.constants.COST_PER_BYTE,
                 safe_mode=True,
+                rust_checker=True,
             )
             cost_result: uint64 = calculate_cost_of_program(
                 program.program, result, self.wallet_state_manager.constants.COST_PER_BYTE
diff --git a/chia/wallet/wallet.py b/chia/wallet/wallet.py
index b5e74f52ed88..fcd7617282e9 100644
--- a/chia/wallet/wallet.py
+++ b/chia/wallet/wallet.py
@@ -82,6 +82,7 @@ class Wallet:
                 self.wallet_state_manager.constants.MAX_BLOCK_COST_CLVM,
                 cost_per_byte=self.wallet_state_manager.constants.COST_PER_BYTE,
                 safe_mode=True,
+                rust_checker=True,
             )
             cost_result: uint64 = calculate_cost_of_program(
                 program.program, result, self.wallet_state_manager.constants.COST_PER_BYTE
diff --git a/setup.py b/setup.py
index 4f11af01d043..e904583bebde 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ dependencies = [
     "chiabip158==1.0",  # bip158-style wallet filters
     "chiapos==1.0.4",  # proof of space
     "clvm==0.9.7",
-    "clvm_rs==0.1.8",
+    "clvm_rs==0.1.10",
     "clvm_tools==0.4.3",
     "aiohttp==3.7.4",  # HTTP server for full node rpc
     "aiosqlite==0.17.0",  # asyncio wrapper for sqlite, to store blocks
diff --git a/tests/block_tools.py b/tests/block_tools.py
index 8c442cd79995..ee4828f6442e 100644
--- a/tests/block_tools.py
+++ b/tests/block_tools.py
@@ -91,6 +91,7 @@ from chia.wallet.derive_keys import (
 
 test_constants = DEFAULT_CONSTANTS.replace(
     **{
+        "RUST_CONDITION_CHECKER": 0,
         "MIN_PLOT_SIZE": 18,
         "MIN_BLOCKS_PER_CHALLENGE_BLOCK": 12,
         "DIFFICULTY_STARTING": 2 ** 12,
diff --git a/tests/blockchain/test_blockchain.py b/tests/blockchain/test_blockchain.py
index 5e2c94c3f825..0e52b6159c35 100644
--- a/tests/blockchain/test_blockchain.py
+++ b/tests/blockchain/test_blockchain.py
@@ -1821,13 +1821,16 @@ class TestBodyValidation:
         block: FullBlock = blocks[-1]
 
         # Too few
+        assert block.transactions_info
         too_few_reward_claims = block.transactions_info.reward_claims_incorporated[:-1]
         block_2: FullBlock = recursive_replace(
             block, "transactions_info.reward_claims_incorporated", too_few_reward_claims
         )
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -1844,9 +1847,11 @@ class TestBodyValidation:
             Coin(h, h, too_few_reward_claims[0].amount)
         ]
         block_2 = recursive_replace(block, "transactions_info.reward_claims_incorporated", too_many_reward_claims)
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -1862,9 +1867,11 @@ class TestBodyValidation:
             block.transactions_info.reward_claims_incorporated[-1]
         ]
         block_2 = recursive_replace(block, "transactions_info.reward_claims_incorporated", duplicate_reward_claims)
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -2049,7 +2056,7 @@ class TestBodyValidation:
         blocks = bt.get_consecutive_blocks(
             1, block_list_input=blocks, guarantee_transaction_block=True, transaction_data=tx
         )
-        assert (await b.receive_block(blocks[-1]))[1] == Err.INVALID_BLOCK_COST
+        assert (await b.receive_block(blocks[-1]))[1] in [Err.BLOCK_COST_EXCEEDS_MAX, Err.INVALID_BLOCK_COST]
 
     @pytest.mark.asyncio
     async def test_clvm_must_not_fail(self, empty_blockchain):
@@ -2083,9 +2090,11 @@ class TestBodyValidation:
 
         # zero
         block_2: FullBlock = recursive_replace(block, "transactions_info.cost", uint64(0))
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -2098,9 +2107,11 @@ class TestBodyValidation:
 
         # too low
         block_2: FullBlock = recursive_replace(block, "transactions_info.cost", uint64(1))
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -2112,9 +2123,11 @@ class TestBodyValidation:
 
         # too high
         block_2: FullBlock = recursive_replace(block, "transactions_info.cost", uint64(1000000))
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
@@ -2515,9 +2528,11 @@ class TestBodyValidation:
 
         # wrong feees
         block_2: FullBlock = recursive_replace(block, "transactions_info.fees", uint64(1239))
+        assert block_2.transactions_info
         block_2 = recursive_replace(
             block_2, "foliage_transaction_block.transactions_info_hash", block_2.transactions_info.get_hash()
         )
+        assert block_2.foliage_transaction_block
         block_2 = recursive_replace(
             block_2, "foliage.foliage_transaction_block_hash", block_2.foliage_transaction_block.get_hash()
         )
diff --git a/tests/blockchain/test_blockchain_transactions.py b/tests/blockchain/test_blockchain_transactions.py
index 951985339d87..5213a4e48eb1 100644
--- a/tests/blockchain/test_blockchain_transactions.py
+++ b/tests/blockchain/test_blockchain_transactions.py
@@ -288,7 +288,8 @@ class TestBlockchainTransactions:
                 await full_node_api_1.full_node.respond_block(full_node_protocol.RespondBlock(block))
 
     @pytest.mark.asyncio
-    async def test_validate_blockchain_spend_reorg_coin(self, two_nodes):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_validate_blockchain_spend_reorg_coin(self, two_nodes, rust_checker: bool):
         num_blocks = 10
         wallet_a = WALLET_A
         coinbase_puzzlehash = WALLET_A_PUZZLE_HASHES[0]
@@ -311,7 +312,8 @@ class TestBlockchainTransactions:
             if coin.puzzle_hash == coinbase_puzzlehash:
                 spend_coin = coin
 
-        spend_bundle = wallet_a.generate_signed_transaction(1000, receiver_1_puzzlehash, spend_coin)
+        assert spend_coin
+        spend_bundle = wallet_a.generate_signed_transaction(uint64(1000), receiver_1_puzzlehash, spend_coin)
 
         new_blocks = bt.get_consecutive_blocks(
             1,
@@ -326,14 +328,14 @@ class TestBlockchainTransactions:
 
         coin_2 = None
         for coin in run_and_get_removals_and_additions(
-            new_blocks[-1], test_constants.MAX_BLOCK_COST_CLVM, test_constants.COST_PER_BYTE
+            new_blocks[-1], test_constants.MAX_BLOCK_COST_CLVM, test_constants.COST_PER_BYTE, rust_checker=rust_checker
         )[1]:
             if coin.puzzle_hash == receiver_1_puzzlehash:
                 coin_2 = coin
                 break
         assert coin_2 is not None
 
-        spend_bundle = wallet_a.generate_signed_transaction(1000, receiver_2_puzzlehash, coin_2)
+        spend_bundle = wallet_a.generate_signed_transaction(uint64(1000), receiver_2_puzzlehash, coin_2)
 
         new_blocks = bt.get_consecutive_blocks(
             1,
@@ -347,14 +349,14 @@ class TestBlockchainTransactions:
 
         coin_3 = None
         for coin in run_and_get_removals_and_additions(
-            new_blocks[-1], test_constants.MAX_BLOCK_COST_CLVM, test_constants.COST_PER_BYTE
+            new_blocks[-1], test_constants.MAX_BLOCK_COST_CLVM, test_constants.COST_PER_BYTE, rust_checker=rust_checker
         )[1]:
             if coin.puzzle_hash == receiver_2_puzzlehash:
                 coin_3 = coin
                 break
         assert coin_3 is not None
 
-        spend_bundle = wallet_a.generate_signed_transaction(1000, receiver_3_puzzlehash, coin_3)
+        spend_bundle = wallet_a.generate_signed_transaction(uint64(1000), receiver_3_puzzlehash, coin_3)
 
         new_blocks = bt.get_consecutive_blocks(
             1,
diff --git a/tests/core/fixtures.py b/tests/core/fixtures.py
index 42172573d82f..ff89e4e2daeb 100644
--- a/tests/core/fixtures.py
+++ b/tests/core/fixtures.py
@@ -16,10 +16,15 @@ from chia.util.path import mkdir
 from tests.setup_nodes import bt, test_constants
 
 
+blockchain_db_counter: int = 0
+
+
 async def create_blockchain(constants: ConsensusConstants):
-    db_path = Path("blockchain_test.db")
+    global blockchain_db_counter
+    db_path = Path(f"blockchain_test-{blockchain_db_counter}.db")
     if db_path.exists():
         db_path.unlink()
+    blockchain_db_counter += 1
     connection = await aiosqlite.connect(db_path)
     wrapper = DBWrapper(connection)
     coin_store = await CoinStore.create(wrapper)
@@ -29,12 +34,12 @@ async def create_blockchain(constants: ConsensusConstants):
     return bc1, connection, db_path
 
 
-@pytest.fixture(scope="function")
-async def empty_blockchain():
+@pytest.fixture(scope="function", params=[0, 10000000])
+async def empty_blockchain(request):
     """
     Provides a list of 10 valid blocks, as well as a blockchain with 9 blocks added to it.
     """
-    bc1, connection, db_path = await create_blockchain(test_constants)
+    bc1, connection, db_path = await create_blockchain(test_constants.replace(RUST_CONDITION_CHECKER=request.param))
     yield bc1
 
     await connection.close()
diff --git a/tests/core/full_node/test_coin_store.py b/tests/core/full_node/test_coin_store.py
index 391b8c5aa36b..c0761b4f6955 100644
--- a/tests/core/full_node/test_coin_store.py
+++ b/tests/core/full_node/test_coin_store.py
@@ -56,7 +56,8 @@ def get_future_reward_coins(block: FullBlock) -> Tuple[Coin, Coin]:
 
 class TestCoinStore:
     @pytest.mark.asyncio
-    async def test_basic_coin_store(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_basic_coin_store(self, rust_checker: bool):
         wallet_a = WALLET_A
         reward_ph = wallet_a.get_new_puzzlehash()
 
@@ -76,7 +77,9 @@ class TestCoinStore:
                         if coin.puzzle_hash == reward_ph:
                             coins_to_spend.append(coin)
 
-            spend_bundle = wallet_a.generate_signed_transaction(1000, wallet_a.get_new_puzzlehash(), coins_to_spend[0])
+            spend_bundle = wallet_a.generate_signed_transaction(
+                uint64(1000), wallet_a.get_new_puzzlehash(), coins_to_spend[0]
+            )
 
             db_path = Path("fndb_test.db")
             if db_path.exists():
@@ -108,6 +111,7 @@ class TestCoinStore:
                             bt.constants.MAX_BLOCK_COST_CLVM,
                             cost_per_byte=bt.constants.COST_PER_BYTE,
                             safe_mode=False,
+                            rust_checker=rust_checker,
                         )
                         tx_removals, tx_additions = tx_removals_and_additions(npc_result.npc_list)
                     else:
diff --git a/tests/core/full_node/test_mempool.py b/tests/core/full_node/test_mempool.py
index 41834ed595e6..08edce41e412 100644
--- a/tests/core/full_node/test_mempool.py
+++ b/tests/core/full_node/test_mempool.py
@@ -26,7 +26,7 @@ from chia.util.ints import uint64
 from chia.util.hash import std_hash
 from chia.types.mempool_inclusion_status import MempoolInclusionStatus
 from chia.util.api_decorators import api_request, peer_required, bytes_required
-from chia.full_node.mempool_check_conditions import parse_condition_args, parse_condition
+from chia.full_node.mempool_check_conditions import parse_condition_args, parse_condition, get_name_puzzle_conditions
 
 from tests.connection_utils import connect_and_get_peer
 from tests.core.node_height import node_height_at_least
@@ -38,7 +38,6 @@ from chia.consensus.cost_calculator import NPCResult
 from chia.types.blockchain_format.program import SerializedProgram
 from clvm_tools import binutils
 from chia.types.generator_types import BlockGenerator
-from chia.full_node.mempool_check_conditions import get_name_puzzle_conditions
 from clvm.casts import int_from_bytes
 
 BURN_PUZZLE_HASH = b"0" * 32
@@ -447,7 +446,7 @@ class TestMempoolManager:
         assert sb1 is None
         # the transaction may become valid later
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_correct_block_index(self, two_nodes):
@@ -510,7 +509,7 @@ class TestMempoolManager:
         assert sb1 is None
         # the transaction may become valid later
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_correct_block_age(self, two_nodes):
@@ -611,7 +610,7 @@ class TestMempoolManager:
         sb1 = full_node_1.full_node.mempool_manager.get_spendbundle(spend_bundle1.name())
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_assert_time_exceeds(self, two_nodes):
@@ -667,7 +666,7 @@ class TestMempoolManager:
         sb1 = full_node_1.full_node.mempool_manager.get_spendbundle(spend_bundle1.name())
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_assert_time_garbage(self, two_nodes):
@@ -739,7 +738,7 @@ class TestMempoolManager:
         sb1 = full_node_1.full_node.mempool_manager.get_spendbundle(spend_bundle1.name())
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_assert_time_relative_negative(self, two_nodes):
@@ -756,6 +755,7 @@ class TestMempoolManager:
         assert status == MempoolInclusionStatus.SUCCESS
         assert err is None
 
+    # ensure one spend can assert a coin announcement from another spend
     @pytest.mark.asyncio
     async def test_correct_coin_announcement_consumed(self, two_nodes):
         def test_fun(coin_1: Coin, coin_2: Coin) -> SpendBundle:
@@ -778,6 +778,8 @@ class TestMempoolManager:
         assert status == MempoolInclusionStatus.SUCCESS
         assert err is None
 
+    # ensure one spend can assert a coin announcement from another spend, even
+    # though the conditions have garbage (ignored) at the end
     @pytest.mark.asyncio
     async def test_coin_announcement_garbage(self, two_nodes):
         def test_fun(coin_1: Coin, coin_2: Coin) -> SpendBundle:
@@ -821,7 +823,7 @@ class TestMempoolManager:
 
         assert full_node_1.full_node.mempool_manager.get_spendbundle(bundle.name()) is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_coin_announcement_missing_arg2(self, two_nodes):
@@ -843,7 +845,7 @@ class TestMempoolManager:
 
         assert full_node_1.full_node.mempool_manager.get_spendbundle(bundle.name()) is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_coin_announcement_too_big(self, two_nodes):
@@ -878,6 +880,8 @@ class TestMempoolManager:
         except AssertionError:
             pass
 
+    # ensure an assert coin announcement is rejected if it doesn't match the
+    # create announcement
     @pytest.mark.asyncio
     async def test_invalid_coin_announcement_rejected(self, two_nodes):
         full_node_1, full_node_2, server_1, server_2 = two_nodes
@@ -888,7 +892,7 @@ class TestMempoolManager:
             cvp = ConditionWithArgs(ConditionOpcode.ASSERT_COIN_ANNOUNCEMENT, [announce.name()])
 
             dic = {cvp.opcode: [cvp]}
-            # Wrong message
+            # mismatching message
             cvp2 = ConditionWithArgs(
                 ConditionOpcode.CREATE_COIN_ANNOUNCEMENT,
                 [b"wrong test"],
@@ -918,10 +922,7 @@ class TestMempoolManager:
 
             dic = {cvp.opcode: [cvp]}
 
-            cvp2 = ConditionWithArgs(
-                ConditionOpcode.CREATE_COIN_ANNOUNCEMENT,
-                [b"test"],
-            )
+            cvp2 = ConditionWithArgs(ConditionOpcode.CREATE_COIN_ANNOUNCEMENT, [b"test"])
             dic2 = {cvp.opcode: [cvp2]}
             spend_bundle1 = generate_test_spend_bundle(coin_1, dic)
             # coin 2 is making the announcement, right message wrong coin
@@ -1011,7 +1012,7 @@ class TestMempoolManager:
 
         assert mempool_bundle is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_puzzle_announcement_missing_arg2(self, two_nodes):
@@ -1039,7 +1040,7 @@ class TestMempoolManager:
 
         assert mempool_bundle is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_invalid_puzzle_announcement_rejected(self, two_nodes):
@@ -1133,7 +1134,7 @@ class TestMempoolManager:
         dic = {cvp.opcode: [cvp]}
         blocks, spend_bundle1, peer, status, err = await self.condition_tester(two_nodes, dic, fee=10)
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_assert_fee_condition_negative_fee(self, two_nodes):
@@ -1372,7 +1373,7 @@ class TestMempoolManager:
 
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_invalid_my_parent(self, two_nodes):
@@ -1437,7 +1438,7 @@ class TestMempoolManager:
 
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_invalid_my_puzhash(self, two_nodes):
@@ -1501,7 +1502,7 @@ class TestMempoolManager:
 
         assert sb1 is None
         assert status == MempoolInclusionStatus.FAILED
-        assert err == Err.GENERATOR_RUNTIME_ERROR
+        assert err == Err.INVALID_CONDITION
 
     @pytest.mark.asyncio
     async def test_invalid_my_amount(self, two_nodes):
@@ -1950,7 +1951,12 @@ MAX_BLOCK_COST_CLVM = 11000000000
 
 
 def generator_condition_tester(
-    conditions: str, safe_mode: bool = False, quote: bool = True, max_cost: int = MAX_BLOCK_COST_CLVM
+    conditions: str,
+    *,
+    rust_checker: bool,
+    safe_mode: bool = False,
+    quote: bool = True,
+    max_cost: int = MAX_BLOCK_COST_CLVM,
 ) -> NPCResult:
     prg = f"(q ((0x0101010101010101010101010101010101010101010101010101010101010101 {'(q ' if quote else ''} {conditions} {')' if quote else ''} 123 (() (q . ())))))"  # noqa
     print(f"program: {prg}")
@@ -1958,13 +1964,14 @@ def generator_condition_tester(
     generator = BlockGenerator(program, [])
     print(f"len: {len(bytes(program))}")
     npc_result: NPCResult = get_name_puzzle_conditions(
-        generator, max_cost, cost_per_byte=COST_PER_BYTE, safe_mode=safe_mode
+        generator, max_cost, cost_per_byte=COST_PER_BYTE, safe_mode=safe_mode, rust_checker=rust_checker
     )
     return npc_result
 
 
 class TestGeneratorConditions:
-    def test_duplicate_height_time_conditions(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_duplicate_height_time_conditions(self, rust_checker: bool):
         # ASSERT_SECONDS_RELATIVE
         # ASSERT_SECONDS_ABSOLUTE
         # ASSERT_HEIGHT_RELATIVE
@@ -1972,7 +1979,9 @@ class TestGeneratorConditions:
         for cond in [80, 81, 82, 83]:
             # even though the generator outputs multiple conditions, we only
             # need to return the highest one (i.e. most strict)
-            npc_result = generator_condition_tester(" ".join([f"({cond} {i})" for i in range(50, 101)]))
+            npc_result = generator_condition_tester(
+                " ".join([f"({cond} {i})" for i in range(50, 101)]), rust_checker=rust_checker
+            )
             assert npc_result.error is None
             assert len(npc_result.npc_list) == 1
             opcode = ConditionOpcode(bytes([cond]))
@@ -1983,27 +1992,48 @@ class TestGeneratorConditions:
                 max_arg = max(max_arg, int_from_bytes(c.vars[0]))
             assert max_arg == 100
 
-    def test_just_announcement(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_just_announcement(self, rust_checker: bool):
         # CREATE_COIN_ANNOUNCEMENT
         # CREATE_PUZZLE_ANNOUNCEMENT
         for cond in [60, 62]:
             message = "a" * 1024
             # announcements are validated on the Rust side and never returned
             # back. They are either satisified or cause an immediate failure
-            npc_result = generator_condition_tester(f'({cond} "{message}") ' * 50)
+            npc_result = generator_condition_tester(f'({cond} "{message}") ' * 50, rust_checker=rust_checker)
             assert npc_result.error is None
             assert len(npc_result.npc_list) == 1
-            # create-announcements and assert-announcements are dropped once
-            # validated
+            if rust_checker:
+                # create-announcements and assert-announcements are dropped once
+                # validated
+                assert npc_result.npc_list[0].conditions == []
+            else:
+                assert len(npc_result.npc_list[0].conditions) == 1
+                print(npc_result.npc_list[0].conditions[0][0])
+                assert npc_result.npc_list[0].conditions[0][0] == ConditionOpcode(bytes([cond]))
+                assert len(npc_result.npc_list[0].conditions[0][1]) == 50
 
-    #            assert npc_result.npc_list[0].conditions == []
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_assert_announcement_fail(self, rust_checker: bool):
+        # ASSERT_COIN_ANNOUNCEMENT
+        # ASSERT_PUZZLE_ANNOUNCEMENT
+        for cond in [61, 63]:
+            message = "a" * 1024
+            # announcements are validated on the Rust side and never returned
+            # back. They ar either satisified or cause an immediate failure
+            # in this test we just assert announcements, we never make them, so
+            # these should fail
+            npc_result = generator_condition_tester(f'({cond} "{message}") ', rust_checker=rust_checker)
+            assert npc_result.error == Err.ASSERT_ANNOUNCE_CONSUMED_FAILED.value
+            assert npc_result.npc_list == []
 
-    def test_multiple_reserve_fee(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_multiple_reserve_fee(self, rust_checker: bool):
         # RESERVE_FEE
         cond = 52
         # even though the generator outputs 3 conditions, we only need to return one copy
         # with all the fees accumulated
-        npc_result = generator_condition_tester(f"({cond} 100) " * 3)
+        npc_result = generator_condition_tester(f"({cond} 100) " * 3, rust_checker=rust_checker)
         assert npc_result.error is None
         assert len(npc_result.npc_list) == 1
         opcode = ConditionOpcode(bytes([cond]))
@@ -2015,24 +2045,31 @@ class TestGeneratorConditions:
             reserve_fee += int_from_bytes(c.vars[0])
 
         assert reserve_fee == 300
+        if rust_checker:
+            assert len(npc_result.npc_list[0].conditions[0][1]) == 1
 
-    #    def test_duplicate_outputs(self):
-    # CREATE_COIN
-    # creating multiple coins with the same properties (same parent, same
-    # target puzzle hash and same amount) is not allowed. That's a consensus
-    # failure.
-    #        puzzle_hash = "abababababababababababababababab"
-    #        npc_result = generator_condition_tester(f'(51 "{puzzle_hash}" 10) ' * 2)
-    #        assert npc_result.error == Err.DUPLICATE_OUTPUT.value
-    #        assert len(npc_result.npc_list) == 0
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_duplicate_outputs(self, rust_checker: bool):
+        # CREATE_COIN
+        # creating multiple coins with the same properties (same parent, same
+        # target puzzle hash and same amount) is not allowed. That's a consensus
+        # failure.
+        puzzle_hash = "abababababababababababababababab"
+        npc_result = generator_condition_tester(f'(51 "{puzzle_hash}" 10) ' * 2, rust_checker=rust_checker)
+        if rust_checker:
+            assert npc_result.error == Err.DUPLICATE_OUTPUT.value
+            assert npc_result.npc_list == []
+        else:
+            assert npc_result.error is None
 
-    def test_create_coin_cost(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_create_coin_cost(self, rust_checker: bool):
         # CREATE_COIN
         puzzle_hash = "abababababababababababababababab"
 
         # this max cost is exactly enough for the create coin condition
         npc_result = generator_condition_tester(
-            f'(51 "{puzzle_hash}" 10) ', max_cost=20470 + 95 * COST_PER_BYTE + 1800000
+            f'(51 "{puzzle_hash}" 10) ', max_cost=20470 + 95 * COST_PER_BYTE + 1800000, rust_checker=rust_checker
         )
         assert npc_result.error is None
         assert npc_result.clvm_cost == 20470
@@ -2040,17 +2077,18 @@ class TestGeneratorConditions:
 
         # if we subtract one from max cost, this should fail
         npc_result = generator_condition_tester(
-            f'(51 "{puzzle_hash}" 10) ', max_cost=20470 + 95 * COST_PER_BYTE + 1800000 - 1
+            f'(51 "{puzzle_hash}" 10) ', max_cost=20470 + 95 * COST_PER_BYTE + 1800000 - 1, rust_checker=rust_checker
         )
         assert npc_result.error in [Err.BLOCK_COST_EXCEEDS_MAX.value, Err.INVALID_BLOCK_COST.value]
 
-    def test_agg_sig_cost(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_agg_sig_cost(self, rust_checker: bool):
         # AGG_SIG_ME
         pubkey = "abababababababababababababababababababababababab"
 
         # this max cost is exactly enough for the AGG_SIG condition
         npc_result = generator_condition_tester(
-            f'(49 "{pubkey}" "foobar") ', max_cost=20512 + 117 * COST_PER_BYTE + 1200000
+            f'(49 "{pubkey}" "foobar") ', max_cost=20512 + 117 * COST_PER_BYTE + 1200000, rust_checker=rust_checker
         )
         assert npc_result.error is None
         assert npc_result.clvm_cost == 20512
@@ -2058,11 +2096,12 @@ class TestGeneratorConditions:
 
         # if we subtract one from max cost, this should fail
         npc_result = generator_condition_tester(
-            f'(49 "{pubkey}" "foobar") ', max_cost=20512 + 117 * COST_PER_BYTE + 1200000 - 1
+            f'(49 "{pubkey}" "foobar") ', max_cost=20512 + 117 * COST_PER_BYTE + 1200000 - 1, rust_checker=rust_checker
         )
         assert npc_result.error in [Err.BLOCK_COST_EXCEEDS_MAX.value, Err.INVALID_BLOCK_COST.value]
 
-    def test_create_coin_different_parent(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_create_coin_different_parent(self, rust_checker: bool):
 
         # if the coins we create have different parents, they are never
         # considered duplicate, even when they have the same puzzle hash and
@@ -2075,7 +2114,7 @@ class TestGeneratorConditions:
         )
         generator = BlockGenerator(program, [])
         npc_result: NPCResult = get_name_puzzle_conditions(
-            generator, MAX_BLOCK_COST_CLVM, cost_per_byte=COST_PER_BYTE, safe_mode=False
+            generator, MAX_BLOCK_COST_CLVM, cost_per_byte=COST_PER_BYTE, safe_mode=False, rust_checker=rust_checker
         )
         assert npc_result.error is None
         assert len(npc_result.npc_list) == 2
@@ -2088,12 +2127,15 @@ class TestGeneratorConditions:
                 )
             ]
 
-    def test_create_coin_different_puzzhash(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_create_coin_different_puzzhash(self, rust_checker: bool):
         # CREATE_COIN
         # coins with different puzzle hashes are not considered duplicate
         puzzle_hash_1 = "abababababababababababababababab"
         puzzle_hash_2 = "cbcbcbcbcbcbcbcbcbcbcbcbcbcbcbcb"
-        npc_result = generator_condition_tester(f'(51 "{puzzle_hash_1}" 5) (51 "{puzzle_hash_2}" 5)')
+        npc_result = generator_condition_tester(
+            f'(51 "{puzzle_hash_1}" 5) (51 "{puzzle_hash_2}" 5)', rust_checker=rust_checker
+        )
         assert npc_result.error is None
         assert len(npc_result.npc_list) == 1
         opcode = ConditionOpcode.CREATE_COIN
@@ -2106,11 +2148,14 @@ class TestGeneratorConditions:
             in npc_result.npc_list[0].conditions[0][1]
         )
 
-    def test_create_coin_different_amounts(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_create_coin_different_amounts(self, rust_checker: bool):
         # CREATE_COIN
         # coins with different amounts are not considered duplicate
         puzzle_hash = "abababababababababababababababab"
-        npc_result = generator_condition_tester(f'(51 "{puzzle_hash}" 5) (51 "{puzzle_hash}" 4)')
+        npc_result = generator_condition_tester(
+            f'(51 "{puzzle_hash}" 5) (51 "{puzzle_hash}" 4)', rust_checker=rust_checker
+        )
         assert npc_result.error is None
         assert len(npc_result.npc_list) == 1
         opcode = ConditionOpcode.CREATE_COIN
@@ -2123,16 +2168,15 @@ class TestGeneratorConditions:
             in npc_result.npc_list[0].conditions[0][1]
         )
 
-    def test_unknown_condition(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_unknown_condition(self, rust_checker: bool):
         for sm in [True, False]:
             for c in ['(1 100 "foo" "bar")', "(100)", "(1 1) (2 2) (3 3)", '("foobar")']:
-                npc_result = generator_condition_tester(c, sm)
+                npc_result = generator_condition_tester(c, safe_mode=sm, rust_checker=rust_checker)
                 print(npc_result)
                 if sm:
                     assert npc_result.error == Err.INVALID_CONDITION.value
                     assert npc_result.npc_list == []
                 else:
                     assert npc_result.error is None
-
-
-#                    assert npc_result.npc_list[0].conditions == []
+                    assert npc_result.npc_list[0].conditions == []
diff --git a/tests/core/test_cost_calculation.py b/tests/core/test_cost_calculation.py
index 336dafb78139..7b8c5b4a09d1 100644
--- a/tests/core/test_cost_calculation.py
+++ b/tests/core/test_cost_calculation.py
@@ -54,7 +54,8 @@ def large_block_generator(size):
 
 class TestCostCalculation:
     @pytest.mark.asyncio
-    async def test_basics(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_basics(self, rust_checker: bool):
         wallet_tool = bt.get_pool_wallet_tool()
         ph = wallet_tool.get_new_puzzlehash()
         num_blocks = 3
@@ -76,7 +77,11 @@ class TestCostCalculation:
         program: BlockGenerator = simple_solution_generator(spend_bundle)
 
         npc_result: NPCResult = get_name_puzzle_conditions(
-            program, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=False
+            program,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=False,
+            rust_checker=rust_checker,
         )
 
         cost = calculate_cost_of_program(program.program, npc_result, test_constants.COST_PER_BYTE)
@@ -98,7 +103,8 @@ class TestCostCalculation:
         )
 
     @pytest.mark.asyncio
-    async def test_strict_mode(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_strict_mode(self, rust_checker: bool):
         wallet_tool = bt.get_pool_wallet_tool()
         ph = wallet_tool.get_new_puzzlehash()
 
@@ -133,11 +139,19 @@ class TestCostCalculation:
         )
         generator = BlockGenerator(program, [])
         npc_result: NPCResult = get_name_puzzle_conditions(
-            generator, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=True
+            generator,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=True,
+            rust_checker=rust_checker,
         )
         assert npc_result.error is not None
-        npc_result: NPCResult = get_name_puzzle_conditions(
-            generator, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=False
+        npc_result = get_name_puzzle_conditions(
+            generator,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=False,
+            rust_checker=rust_checker,
         )
         assert npc_result.error is None
 
@@ -148,7 +162,8 @@ class TestCostCalculation:
         assert error is None
 
     @pytest.mark.asyncio
-    async def test_clvm_strict_mode(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_clvm_strict_mode(self, rust_checker: bool):
         block = Program.from_bytes(bytes(SMALL_BLOCK_GENERATOR.program))
         disassembly = binutils.disassemble(block)
         # this is a valid generator program except the first clvm
@@ -158,16 +173,25 @@ class TestCostCalculation:
         program = SerializedProgram.from_bytes(binutils.assemble(f"(i (0xfe (q . 0)) (q . ()) {disassembly})").as_bin())
         generator = BlockGenerator(program, [])
         npc_result: NPCResult = get_name_puzzle_conditions(
-            generator, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=True
+            generator,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=True,
+            rust_checker=rust_checker,
         )
         assert npc_result.error is not None
-        npc_result: NPCResult = get_name_puzzle_conditions(
-            generator, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=False
+        npc_result = get_name_puzzle_conditions(
+            generator,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=False,
+            rust_checker=rust_checker,
         )
         assert npc_result.error is None
 
     @pytest.mark.asyncio
-    async def test_tx_generator_speed(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_tx_generator_speed(self, rust_checker: bool):
         LARGE_BLOCK_COIN_CONSUMED_COUNT = 687
         generator_bytes = large_block_generator(LARGE_BLOCK_COIN_CONSUMED_COUNT)
         program = SerializedProgram.from_bytes(generator_bytes)
@@ -175,7 +199,11 @@ class TestCostCalculation:
         start_time = time.time()
         generator = BlockGenerator(program, [])
         npc_result = get_name_puzzle_conditions(
-            generator, test_constants.MAX_BLOCK_COST_CLVM, cost_per_byte=test_constants.COST_PER_BYTE, safe_mode=False
+            generator,
+            test_constants.MAX_BLOCK_COST_CLVM,
+            cost_per_byte=test_constants.COST_PER_BYTE,
+            safe_mode=False,
+            rust_checker=rust_checker,
         )
         end_time = time.time()
         duration = end_time - start_time
@@ -186,7 +214,8 @@ class TestCostCalculation:
         assert duration < 1
 
     @pytest.mark.asyncio
-    async def test_clvm_max_cost(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    async def test_clvm_max_cost(self, rust_checker: bool):
 
         block = Program.from_bytes(bytes(SMALL_BLOCK_GENERATOR.program))
         disassembly = binutils.disassemble(block)
@@ -201,14 +230,18 @@ class TestCostCalculation:
 
         # ensure we fail if the program exceeds the cost
         generator = BlockGenerator(program, [])
-        npc_result: NPCResult = get_name_puzzle_conditions(generator, 10000000, cost_per_byte=0, safe_mode=False)
+        npc_result: NPCResult = get_name_puzzle_conditions(
+            generator, 10000000, cost_per_byte=0, safe_mode=False, rust_checker=rust_checker
+        )
 
         assert npc_result.error is not None
         assert npc_result.clvm_cost == 0
 
         # raise the max cost to make sure this passes
         # ensure we pass if the program does not exceeds the cost
-        npc_result: NPCResult = get_name_puzzle_conditions(generator, 20000000, cost_per_byte=0, safe_mode=False)
+        npc_result = get_name_puzzle_conditions(
+            generator, 20000000, cost_per_byte=0, safe_mode=False, rust_checker=rust_checker
+        )
 
         assert npc_result.error is None
         assert npc_result.clvm_cost > 10000000
diff --git a/tests/generator/test_rom.py b/tests/generator/test_rom.py
index 13059019e3a3..d9fb9e22ff86 100644
--- a/tests/generator/test_rom.py
+++ b/tests/generator/test_rom.py
@@ -1,3 +1,4 @@
+import pytest
 from clvm_tools import binutils
 from clvm_tools.clvmc import compile_clvm_text
 
@@ -93,14 +94,17 @@ class TestROM:
         assert cost == EXPECTED_ABBREVIATED_COST
         assert r.as_bin().hex() == EXPECTED_OUTPUT
 
-    def test_get_name_puzzle_conditions(self):
+    @pytest.mark.parametrize("rust_checker", [True, False])
+    def test_get_name_puzzle_conditions(self, rust_checker: bool):
         # this tests that extra block or coin data doesn't confuse `get_name_puzzle_conditions`
 
         gen = block_generator()
         cost, r = run_generator(gen, max_cost=MAX_COST)
         print(r)
 
-        npc_result = get_name_puzzle_conditions(gen, max_cost=MAX_COST, cost_per_byte=COST_PER_BYTE, safe_mode=False)
+        npc_result = get_name_puzzle_conditions(
+            gen, max_cost=MAX_COST, cost_per_byte=COST_PER_BYTE, safe_mode=False, rust_checker=rust_checker
+        )
         assert npc_result.error is None
         assert npc_result.clvm_cost == EXPECTED_COST
         cond_1 = ConditionWithArgs(ConditionOpcode.CREATE_COIN, [bytes([0] * 31 + [1]), int_to_bytes(500)])
diff --git a/tests/util/generator_tools_testing.py b/tests/util/generator_tools_testing.py
index a31ff707a78d..d0d048cba421 100644
--- a/tests/util/generator_tools_testing.py
+++ b/tests/util/generator_tools_testing.py
@@ -9,7 +9,7 @@ from chia.util.generator_tools import additions_for_npc
 
 
 def run_and_get_removals_and_additions(
-    block: FullBlock, max_cost: int, cost_per_byte: int, safe_mode=False
+    block: FullBlock, max_cost: int, cost_per_byte: int, rust_checker: bool, safe_mode=False
 ) -> Tuple[List[bytes32], List[Coin]]:
     removals: List[bytes32] = []
     additions: List[Coin] = []
@@ -20,7 +20,11 @@ def run_and_get_removals_and_additions(
 
     if block.transactions_generator is not None:
         npc_result = get_name_puzzle_conditions(
-            BlockGenerator(block.transactions_generator, []), max_cost, cost_per_byte=cost_per_byte, safe_mode=safe_mode
+            BlockGenerator(block.transactions_generator, []),
+            max_cost,
+            cost_per_byte=cost_per_byte,
+            safe_mode=safe_mode,
+            rust_checker=rust_checker,
         )
         # build removals list
         for npc in npc_result.npc_list: