Is this chess or sudoku? Well, it's both!Your goal is to fill up the gaps on the chessboard with the missing chess pieces. The number on each square represents how many pieces must attack it.Try this awesome app and train your brain cells with an almost infinite amount of puzzles!+ short-term amusement for your 5 min break or long-term challenging brain game+ thousands of different puzzles!+ play on one or two chessboards+ have the chess pieces dynamically show their attack balance on the board+ it's up to you: you choose the board size, the number of missing chess pieces, ... etc.+ even played by experienced chess players+ no chess knowledge required - have the pieces show you which squares they are attacking+ completely free!+ no ads!