Chess
Chess is a free, single-player chess game you play in your browser against a built-in AI engine — no account, no download, nothing to set up.
Pick your side and a difficulty from Easy to Master, then play a full game on a clean walnut-and-brass board. Tap or drag to move; legal moves light up as you go, and the engine plays every standard rule — castling, en passant, pawn promotion, check, checkmate, stalemate and draws. Easy is gentle enough for a first-timer to win, Hard searches several moves ahead, and Master searches further still — and none of them ever plays an illegal move. When the game ends you get a shareable result card, then jump straight into another. It works on phones and desktop alike, so a quick game is always one tap away.