GARDNEROVA HRA pro DOS

This game was invented by an American connoisseur of puzzles and games. A well-known personality in the field of recreational mathematics - MARTIN GARDNAR.
In its original form it is coins arranged' four by four in four rows .The coins are laid in a random manner, some backwards, some face up. (In the program the wheels).The object of the game is to turn all the wheels the same side up. You can't turn one wheel, only the whole row.