Basic rules

Checkmate the opponent's king — trap it so every escape is covered. You play White and move first.

Pawns step forward and capture diagonally; rooks move in straight lines, bishops on diagonals, the queen does both, knights jump in an L, and the king moves one square any direction.

A few specials: castle the king to safety, capture en passant, and promote a pawn that reaches the far rank. Get checked and you must escape; no escape is checkmate; no legal move without check is stalemate — a draw.

What's here

Mode

Play the computer (you're White) or pass-and-play two on one device.

Difficulty

Gentle plays quickly and forgives a lot. Balanced thinks deeper and puts up more of a fight. Sharp searches deeper still and almost always plays its best move.

Coach

Reviews each move you make and flags blunders, mistakes, and the good ones — on by default, vs Computer only.

Hint

Suggests a strong move and outlines it on the board, with a plain reason why.

Undo

Takes back your last move and the computer's reply together.

Flip

Turns the board to view it from the other side.

Theme

Auto follows your system; Light and Dark pin it. The board itself stays the same.

Install

Add it to your home screen — it runs fully offline.