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Concepts
Find a game by the idea it teaches. Every concept here is taught by at least one published game — the structure, the plan, the technique, and the game that shows it.
Pawn Structure
The pawns decide which plans are possible — and which weaknesses last.
Isolated Pawn
An isolated pawn has no pawn on either neighbouring file, so no pawn can ever defend it. On the queen’s file it buys open lines and space in return, and the game turns on whether that activity outlasts the weakness.
1 game
Backward Pawn
A backward pawn has fallen behind its neighbours and cannot advance safely, so no pawn can defend it. It is a long-term target, and the square in front of it is a hole the other side can occupy.
2 games
Hanging Pawns
Two adjacent pawns on half-open files with no pawn beside them: mobile and space-gaining, but with nothing behind them. They are strong while they can advance and weak the moment they are fixed.
2 games
Passed Pawn
A passed pawn has no enemy pawn in front of it or on the neighbouring files, so only pieces can stop it. It ties a piece to blockading it and can decide the endgame.
3 games
Doubled Pawns
Two pawns on one file cannot defend each other and the rear one rarely becomes a passed pawn. They are usually accepted for something — an open file, a central grip — and the game asks whether that something was worth it.
3 games
Pawn Break
A pawn advance that challenges an enemy pawn to open lines or change the structure. Timing it is the middlegame’s central decision: too early and it concedes, too late and the plan never happens.
7 games
Pieces & Activity
Where the pieces belong, and how to get them there.
Open File
A file with no pawns on it is a road for the rooks. Whoever gets a rook there first sets the terms, and the seventh rank at the far end is the prize.
4 games
Rook Activity
Rooks need open lines: a file, a rank, a lift in front of the pawns. The side whose rooks are working first usually dictates the middlegame and almost always the rook endgame.
2 games
Weak Square
A square that no pawn can defend any longer. Once the pieces that cover it are gone, it becomes a home for an enemy piece and a lasting target.
1 game
Good Bishop / Bad Bishop
A bishop on the colour of its own pawns has fewer diagonals to work on; a bishop on the other colour is free. Exchanging the bad one, or keeping the good one, is a positional judgement the board can count.
3 games
The Bishop Pair
Two bishops against a bishop and a knight, or two knights, control both colours and grow stronger as the position opens. Keeping the pair, or breaking it, is a decision the structure makes.
1 game
Strategy & Plans
The plans, judgements and transformations that shape a middlegame.
King Safety
A king behind intact pawns is a piece nobody has to worry about; an exposed one turns every open line into a threat. Judging when to castle, when to advance the shelter and when the centre is safe is part of every plan.
3 games
Initiative
The side making threats decides what happens next. Keeping the initiative — forcing moves that must be answered — is worth material, and losing it is how advantages disappear.
3 games
Creating Weaknesses
Provoking a pawn move or an exchange that leaves a lasting target. Most positional wins are two weaknesses attacked at once.
2 games
Transformation of Advantage
One kind of advantage traded for another: space into a passed pawn, activity into material, an attack into a winning endgame. Recognising when the position changes character is what separates a good position from a won game.
2 games
Endgames
Technique when the material is small and the king comes out.
Rook Endgame
The commonest endgame and the most technical: activity, the king, and the passed pawn decide it, and a pawn up is often not enough. Most rook endings are won or lost by the rook’s position, not the count.
3 games
Active King
In the endgame the king is a fighting piece: it should come to the centre, support the pawns and attack the opponent’s. The side whose king arrives first usually wins.
3 games
Rook Behind the Passed Pawn
A rook behind a passed pawn — its own or the opponent’s — gains activity as the pawn advances; a rook in front of it loses activity with every step. The rule holds for attacker and defender alike.
1 game
Minor Piece Endgame
With one minor piece each, the pawns decide which piece is better: bishops want open diagonals and play on two wings, knights want fixed pawns and one battlefield. Opposite-coloured bishops draw even a pawn or two down.
1 game
Endgame Technique
The discipline of the last phase: the king comes into play, the passed pawn is created, the pieces are traded on the right terms. Most endgames are won by principles, not by calculation.
3 games
Attacking Ideas
How an attack is built, and the tactical ideas that finish it.
Mating Attack
An attack on the king is built before it lands: pieces brought in, defenders pulled away, lines opened. The final sequence works because of the preparation.
4 games
Sacrifice
Material given up for something the board can verify — an attack, activity, a passed pawn. A sacrifice is not a gamble when the compensation can be counted.
2 games
Forcing Sequence
Checks, captures and threats that leave the opponent no choice. A forcing sequence is calculated to its end, and the side that finds one decides the game on its own terms.
4 games
Punishing a Mistake
An error is worth nothing unless it is answered: the winner finds the forcing moves that turn a mistake into a lost position. The lesson is the reply, not the mistake.
2 games
Opposite-Side Castling
Kings on opposite wings turn the game into a race: each side throws its pawns at the other king, and the attack that arrives first wins. Speed counts for more than material.
1 game
Opening to Middlegame
What an opening sets up, and how the game grows out of it.
Opening Plan
What an opening sets up for both sides: the pawn structure it aims for, the pieces’ ideal squares, the break it prepares. Understanding the plan matters more than remembering the moves.
2 games
Opening-to-Middlegame Transition
The moment the book ends and the plans begin. The best players know what the opening was for and choose the first middlegame plan from that, not from memory.
1 game