Chess

Overview

Place a queen on its color, knights inside the rooks, pawns across the second rank, and the opening position is set. Chess has been the benchmark for two-player strategy for something like fifteen centuries, and this build preserves every rule that matters: castling, en passant, promotion, check, checkmate, and stalemate. The computer opponent plays at a steady, beatable level rather than grandmaster strength, which makes it a good fit for working through openings and endgames without getting crushed. Legal moves light up when you select a piece, and the last move is marked, so it is easy to follow the flow of the game even after stepping away. Undo a blunder and the position rewinds so you can try a sharper continuation.

How to Play

Pick up any piece by clicking it, or drag it straight to its target square; the touch equivalent is a tap on the piece followed by a tap on the destination. Arrow keys move the selection cursor if you prefer keyboard navigation. When a piece is selected, every legal destination lights up, which is especially handy for spotting pinned pieces and available captures at a glance. The computer then replies on its own clock. An undo button walks back moves so you can replay a line a different way, and check, checkmate, and stalemate are all detected and announced automatically.

Tips & Strategy

Control the center early with a pawn or two on e4, d4, e5, or d5; that gives your pieces room to breathe and cramps the computer's. Develop knights before bishops, and castle within the first ten moves so your king is tucked away with a rook freed for the open file. Trades favor the defender when you are ahead on material, so simplify once you reach a winning endgame. Watch for forks, pins, and discovered attacks; the computer will exploit any piece left hanging for even a single move. In king-and-pawn endings, the side whose pawn advances first often queens first, and a king parked directly in front of its own pawn can stall promotion entirely.