PC-Sherlock: V1.3 Game of logic & deduction Test your logic and deduction AGAINST your computer. Here, unlike other mastermind games, your computer actually competes with you to deduce the secret number. And, it plays like a pro! The Game is presented in graphics where you and your computer must determine each other's secret number using pure logic. Runs on IBM Compatibles with HGA, EGA, or, VGA graphics.