Classic board game Turnablock was invented by mathematician J. H. Conway in 1976, and was described in the Mathematical Games column of Scientific American. Turnablock is a 2 player Turn-based strategy game played on a board full of black and white tiles. Both Players take turns flipping a rectangular block in one turn each.On flipping, black tiles turn to white and vice versa.The Player, who turns the whole board white, wins the game. Players can make strategies and choose any size of block to flip in one turn . The only condition is that the lower right corner tile of the rectangle must be black.This single rule ensures that each game will have a clear winner. (No Draws) Features: 1) Single player mode ( Vs virtual player 'Flipper' ) 2) Flipper can play at 3 difficulty levels - Easy,Medium,Hard 3) 2 players offline ( One device ) 4) Different size of boards to play.