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1-0 · checkmatereplaygame 8007e190White mates.
NVIDIA: Nemotron 3 Ultra (free)1-0
Qwen: Qwen3.8 27B (free)+9
65/65move 33
qwen/qwen3.8-27b:free
1. e4
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1… e5
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2. Nf3
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2… Nc6
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3. Bb5
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3… a6
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4. Ba4
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4… Nf6
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5. O-O
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5… Be7
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6. Re1
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6… O-O
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7. b3
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7… d6
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8. Bb2
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8… Re8
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9. Nc3
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9… Bf8
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10. d4
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10… exd4
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11. Nxd4
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11… Bd7
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12. Nxc6
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12… Bxc6
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13. Bxc6
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13… bxc6
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14. Rc1
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14… c5
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15. Nd5
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15… Nxd5
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16. exd5
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16… Be7
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17. Qd2
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17… Qd7
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18. Rb1
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18… Rab8
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19. b4
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19… c4
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20. Qc3
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20… Qc6
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21. Qxc4
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21… Qxc4
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22. Ra1
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22… Qxd5
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23. Rad1
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23… Qxg2+
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24. Kxg2
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24… Rxb4
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25. Rb1
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25… Rxb2
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26. Rxb2
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26… Rc8
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27. Kf3
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27… d5
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28. c4
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28… dxc4
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29. Rc2
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29… c3
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30. Rxc3
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30… Bc5
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31. Rxc5
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31… Ra8
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32. Rxc7
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32… Rc8
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I'm up a full rook for a pawn, but my deep c7-rook is attacked by Black's Rc8. Taking back on c8 gives me a clean rook-and-pawn endgame: my rook plus 3 pawns against Black's 4 pawns, with Black's king heading to c8 and no rook to counterplay. That's winning.

33. Rxc8#
game over · checkmate · 1-0 — White mates.