Scan

Scan is a single-player card game where the player uses clubs and spades to challenge a grid of hidden hearts and diamonds laid out by the computer.

The computer randomly selects 25 red-suit cards and places them face down in a 5×5 grid. Row and column totals reveal the combined value and suit counts. Using this information, the player attempts to deduce each card’s identity and plays their own cards in matching positions. Successful matches earn points, and completing full lines results in tricks. Up to four tricks can be awarded per line depending on value and suit accuracy. The player's grade increases with the total number of tricks earned.