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Paris · 1750

Legall’s Mate

Legall de Kermeur vs. Saint BrieA pinned knight jumps anyway, the queen is offered, and three minor pieces mate on move seven.

LevelBeginnerElo600–800ThemePinned knight tacticMoves7
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Moves · tap to jump

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Starting position

Ready

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Main lesson

A pin is only real if moving the piece actually loses.

What your student should learn

  • A pin only holds if moving the piece really loses.
  • Check what a pinned piece uncovers before trusting the pin.
  • Three minor pieces can mate a king in the centre.
  • Bd6 early can walk straight into this trap.

Mini tournament checklist

  • Is the piece I am pinning actually stuck?
  • What happens if it moves anyway?
  • Am I bringing my bishop out early on b4 or g4 without a plan?
  • Is my king still able to castle?

Run through this list before you start an attack in a real game. Mostly yes means look for tactics; otherwise improve one more piece first.

Full move list

The Pin On f3

1.
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The Queen Sacrifice

5.

Mate With Three Minor Pieces

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7.

Note: The oldest famous trap in chess, and still the fastest way to teach pins.

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