The puzzle is solved when the player finds a way to accomplish the goal stated in the puzzle's description no matter what moves the opponent makes.

The puzzles loaded to the server are checked to have only one solution, so if the goal is accomplished, for example the mate to black is reached in three moves, the puzzle is solved.

In order to make the process of solving the puzzle more interactive, the game has a built-in chess engine that makes the moves on behalf of the defending side.

The moves are made with intent to prevent the player from accomplishing the goal and thus the process of solving the puzzle becomes trying to defeat the engine in the required number of moves.

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