En passant changes the defensive targets

Lasker - Capablanca, 1921

Complete legal positionLoading progress…

Decision position · Black to move

Pawn structure and mobility

White occupies d4 with pawns and controls e5 with pawn attacks; Black occupies d5 with pawns and controls e4, d5 with pawn attacks. Black has 4 legal pawn move choices in this position. Pawn control is geometric, including pinned pawns; legal mobility accounts for king safety. Neither count is an engine evaluation.

White

Isolated pawns: b3, d4
Doubled files: None
Passed pawns: b3
Blocked ahead: d4 by d5, h3 by h4
Pawn chains: g4–h3

Black

Isolated pawns: None
Doubled files: None
Passed pawns: None
Blocked ahead: d5 by d4, h4 by h3
Pawn chains: d5–e6–f7–g6

Black's legal pawn moves: f6, e5, g5, hxg3

Identify the chain's support

White's pawn chain on g4, h3 has h3 at its base. Test whether pressure on that support changes the advanced pawns' stability; piece placement and tactics determine whether a break works.

Study this pawn idea

A passer still needs help

The pawns on b3 have no enemy pawn ahead on their own or adjacent files. Check blockaders, king activity and the promotion route before advancing; this geometric fact is not a winning verdict.

Study this pawn idea

Learn the plans behind these pawn structures →

Think before revealing

Which White pawn ends up on g3, and which two squares are vacated by the en passant operation?

Diagnose → choose → calculate → explain the transformation. Consider the opponent’s best resistance, not just the move you want them to make.

Your reasoning

What is the pawn situation?Your candidate and intended improvementOpponent’s reply; what changes after the final recapture?

4 · Reflect & return

Can you explain the gain, the concession and the opponent’s plan without reading the notes? Self-rate your understanding to schedule another look. This is a learning record, not an engine grade.

Sources & teaching context

Adapted from the supplied Pawn Play Atlas and Central Pawn Play materials. Unknown historical details remain unknown; illustrations are distinguished from full games.

Historical score / source 1

Transfer the idea

Try it in a different setting.

Study as a curriculum →

En passant changes the defensive targets

Lasker - Capablanca, 1921

Complete legal positionLoading progress…

Decision position · Black to move

Pawn structure and mobility

White

Isolated pawns: b3, d4
Doubled files: None
Passed pawns: b3
Blocked ahead: d4 by d5, h3 by h4
Pawn chains: g4–h3

Black

Isolated pawns: None
Doubled files: None
Passed pawns: None
Blocked ahead: d5 by d4, h4 by h3
Pawn chains: d5–e6–f7–g6

Black's legal pawn moves: f6, e5, g5, hxg3

Identify the chain's support

White's pawn chain on g4, h3 has h3 at its base. Test whether pressure on that support changes the advanced pawns' stability; piece placement and tactics determine whether a break works.

Study this pawn idea

A passer still needs help

The pawns on b3 have no enemy pawn ahead on their own or adjacent files. Check blockaders, king activity and the promotion route before advancing; this geometric fact is not a winning verdict.

Study this pawn idea

Learn the plans behind these pawn structures →

Think before revealing

Which White pawn ends up on g3, and which two squares are vacated by the en passant operation?

Diagnose → choose → calculate → explain the transformation. Consider the opponent’s best resistance, not just the move you want them to make.

Your reasoning

What is the pawn situation?Your candidate and intended improvementOpponent’s reply; what changes after the final recapture?

4 · Reflect & return

Can you explain the gain, the concession and the opponent’s plan without reading the notes? Self-rate your understanding to schedule another look. This is a learning record, not an engine grade.

Sources & teaching context

Adapted from the supplied Pawn Play Atlas and Central Pawn Play materials. Unknown historical details remain unknown; illustrations are distinguished from full games.

Historical score / source 1

Transfer the idea

Try it in a different setting.

Study as a curriculum →