Unlimited retries:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 9387,189
Unlimited credits:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 9679,165
Unlimited time:
Load or reset the game, then execute the following BASIC command before running or restarting the program.
POKE 9206,173