English 16 a very nice puzzle invented in 1900by the American Sam Loyd, also described as the greatest inventorof puzzles by Martin Gardner.The goal of that game is to transpose the positions of the gold andsilver coins in the minimum possible number of moves.

The software is designed to study the pronunciation of letters inthe English alphabet. It will be helpful for for foreignerslearning the English language.

The earliest known references to theKnight'sTour problem date back to the 9th century. The Knight'sTour is amathematical problem involving a knight on a chessboard.The knightis placed on the empty board and, moving according to therules ofchess, must visit each square exactly once.