DiscoverChess Visualization with Aiden Rayner🧠 I Swear It's a Rule (Illegal Move Exercise)
🧠 I Swear It's a Rule (Illegal Move Exercise)

🧠 I Swear It's a Rule (Illegal Move Exercise)

Update: 2025-10-01
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Description

Illegal Move Exercise: The audio will lead you through a series of moves from the beginning of a game. Somewhere in there, a player will make an illegal move but the game will continue anyway. Find the illegal move.



To learn more about Don't Move Until You See It and get the free 5-day Conceptualizing Chess Series, head over to https://dontmoveuntilyousee.it/conceptualization



PGN for today's exercise:




  1. c4 Nf6 2. Nc3 e5 3. e3 d5 4. cxd5 Nxd5 5. d4 Nxc3 6. bxc3 Bd6 7. Nf3 e4 8.dxe5 Bc5 9. Qxd8+ Kxd8 10. Ng5 Ke7 11. Be2 h6 12. Nf3 *



And the answer is...

White's move 8.dxe5 is illegal because en passant can be done only when the pawn moves two squares from its starting square.

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🧠 I Swear It's a Rule (Illegal Move Exercise)

🧠 I Swear It's a Rule (Illegal Move Exercise)

Don't Move Until You See It