Problem categories

Explore the different categories featured in Advent of Chess.

Your opponent mirrors your every move.

Checks are illegal!

Construct games that achieves a particular goal.

Both sides cooperate to achieve checkmate.

White forces Black to deliver checkmate, but with a twist: if either player can give checkmate at any point, they must.

Black plays a series of moves without reply after which White checkmates in one.

Force your opponent to deliver checkmate!

Work backwards to uncover the moves that led to a given position.

Reconstruct a game ending in a specific position in a specified number of moves.

Take back moves and then find a way to achieve a goal, like delivering checkmate.

Find out where to place pieces before delivering mate.

Players must copy the opponent's previous move.