1chess.online
Learn
Choose a lesson for your current goal; preview revisions remain noindex until editorial approval.
29 matching lessons
Absolute and Relative Pins
A pin restricts a piece because moving it exposes a more valuable target behind it.
Tactics · previewBack-Rank Mate Patterns
Back-rank mate exploits a king boxed in by its own pawns while a rook or queen enters the final rank.
Beginner · previewSet Up a Chessboard Correctly
Correct setup starts with orientation, then pieces: a light square on each player's right, rooks in corners, knights next, bishops next, queens on their own color…
Strategy · previewBuild a Candidate-Move Habit
Candidate moves are a short, deliberate list of plausible choices examined before committing.
Beginner · previewCastling Rules, Explained Clearly
Castling is the only chess move that relocates two pieces at once. It usually improves king safety and connects the rooks, but it is legal only when several…
Beginner · previewCheck, Checkmate, and Stalemate
Check describes an immediate attack on the king; checkmate is a check with no legal answer; stalemate is different because the king is not in check but the player…
Tactics · previewChess Forks: Attack Two Targets
A fork is one piece attacking two or more targets at once.
Tactics · previewDecoy: Invite a Piece to the Wrong Square
A decoy attracts an enemy piece to a square where another tactic becomes possible.