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KodandaPrime vs MagnusCarlsen: game review

MagnusCarlsen won on 23 October 2026, in the Pterodactyl Defense. Stockfish 19 reviewed every move of both players at depth 18, double-checked the sharp moments deeper, and labelled each one from Brilliant to Blunder.

The board after 9…Bxf3, with both players' accuracy
KodandaPrime 309485.1
MagnusCarlsen 341993.2
KodandaPrimeLabelMagnusCarlsen
0!Great1
8Best16
7Excellent3
4Good2
8Book7
2?!Inaccuracy0
Step through every moveReview your own game

Key moments

The Brilliant and Great moves, and the costliest mistakes, as the review explains them.

9…Bxf3: Great

9…Bxf3! The only good move here: every alternative is clearly worse.

  • Takes the knight on f3.
  • The next best move, 9…Bh5, would drop Black's winning chances from 48% to 13% (+5.08).
  • 9…Bxf3 trades off the attacked bishop instead of losing it to hxg4.
  • White was threatening hxg4, winning a bishop. The bishop takes something with it instead.
  • Trades bishop for knight.
  • The bishop on f3 can be taken by the queen on d1 or the g2 pawn.

The opening

Pterodactyl Defense (A42)

  • Both sides followed opening theory up to 8.Bd2: 15 moves in all, 8 by White and 7 by Black.
  • Theory runs out after 8.Bd2: too few games between strong players reached this position to go further.

Every move

The moves from Chess.com (the game), each with its label. Step through them on the board for the engine lines and an explanation of every move.

  1. 1.c4c5
  2. 2.Nf3g6
  3. 3.e4Bg7
  4. 4.d4Qa5+
  5. 5.Nc3d6
  6. 6.d5Bxc3+
  7. 7.bxc3Bg4
  8. 8.Bd2Nd7
  9. 9.h3!Bxf3
  10. 10.gxf3Ngf6
  11. 11.Qb3O-O-O
  12. 12.a4Nh5
  13. 13.?!Qb5Qc7
  14. 14.a5a6
  15. 15.Qb3e5
  16. 16.h4Kb8
  17. 17.Rg1Nf4
  18. 18.Kd1Rhf8
  19. 19.Kc2f5
  20. 20.Qa4Ka7
  21. 21.Rb1Rf7
  22. 22.Bxf4exf4
  23. 23.exf5gxf5
  24. 24.Rb2Ne5
  25. 25.Be2Rg7
  26. 26.Rbb1Rdg8
  27. 27.?!Rxg7Rxg7
  28. 28.Kd2Rg2
  29. 29.Rf1Rh2

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