A mouseclick on any card belonging to the array on the right side ("pool") moves that card into the next empty field of the left array ("game-area").
A single mouseclick on any card in the game-area causes a quarter turn of the card counterclockwise.
A double mouseclick on any card in the game-area moves the card back to the original place
in the pool.
Aim: all cards should be placed in the game-area such that all neighbours fit, i.e. 12
unicolored letters "A" should appear.
After activation of the option "automatically" a
backtracking-algorithm will run down for search of a solution. It may be interrupted by activation of the option "by mouseclick". When a solution is found, the algorithm will end and in that case a search for another solution may be continued with the button "new solution".
The delay (in milliseconds) regulates the frequency of the image output.