Openings, tactics, and how the tools work

Guides on openings, tactics, and the rules of chess, plus how the ChessHints analyzer, Play vs AI, and puzzles work.
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How to Castle in Chess

Castling is the only move that shifts two pieces at once. You tuck the king off the open center and bring a rook toward the middle in a single turn. Club games are often decided by who castles with a

28 October 2026 Articles
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King and Pawn Endgames

A king and a single pawn against a bare king looks simple and still produces draws from winning positions. Three ideas cover most of them: the rule of the square, the opposition, and the special case

28 October 2026 Articles
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Chess Forks Explained

A fork is one piece attacking two things at once. You cannot answer both threats, so you lose material. Knights do this more often than any other piece because they jump over whatever is in the way,

28 October 2026 Articles
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Skewers in Chess

A skewer is a pin turned around. A long-range piece attacks down a line, the more valuable enemy piece stands in front, and something worth taking stands behind it. The front piece has to step away.

28 October 2026 Articles
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Discovered Attacks in Chess

A discovered attack hides in plain sight. One of your pieces stands on a line, and another of your pieces stands in front of it. You move the front piece, and the piece behind suddenly attacks

28 October 2026 Articles
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Back-Rank Mate Patterns

A back-rank mate is a rook or queen that lands on the eighth rank while the enemy king has no square to step to and no piece that can capture the checker or block the rank. The king's own pawns,

28 October 2026 Articles
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The London System

The London System is a setup, not a long forced line. White develops the dark-squared bishop to f4 before closing the pawn chain with e3, then puts knights on f3 and d2, the light-squared bishop on

28 October 2026 Articles
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The French Defense

The French Defense starts 1.e4 e6 2.d4 d5. Black stakes a claim in the center at once and accepts a cramped light-squared bishop in return. The games are strategic. White owns more space. Black

28 October 2026 Articles
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The Caro-Kann Defense

The Caro-Kann begins 1.e4 c6 2.d4 d5. Like the French, Black challenges e4 at once. Unlike the French, the pawn that supports d5 is on c6, so the light-squared bishop can leave c8 before e6 is

28 October 2026 Articles
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The Scandinavian Defense

The Scandinavian Defense is the most direct answer to 1.e4: 1.e4 d5. Black opens the center on move one and accepts an early queen move in the main line. It is easy to learn, it avoids the Ruy Lopez

28 October 2026 Articles
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