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Subject: Re: test position : N for linked passed pawns

Author: George Tsavdaris

Date: 12:51:09 11/14/05

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On November 14, 2005 at 11:25:28, Vincent Lejeune wrote:

>[d]6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - - 0 34
>
>Nxb7!

Some more analysis that "proves" Nxb7 is winning:

[Event "20'/40"]
[Site "Thessaloniki"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - - 0 1"]
[PlyCount "15"]
[TimeControl "40/1200:0/0:0/0"]

1. Nxb7 Rxb7 2. a5 f5 (2... Rc7 3. b6 Rc2+ 4. Re2 Nxe4+ 5. Kg1 Nf3+ 6. Kh1 $1
Rc1 7. Rxe4 Rxf1+ 8. Kg2 Rb1 9. Kxf3 Kf8 $18) 3. a6 Rc7 4. exf5 $1 (4. b6 Rc2+
5. Re2 (5. Kg3 f4+ 6. Kxh4 Rxh2+ 7. Kg4 Kf7 8. Re2 Rh1 9. Bg2 Rh2 10. Bf1 $11)
5... Nxe4+ 6. Kg1 Nf3+ 7. Kh1 Rc1 8. Rxe4 $1 (8. b7 $2 Kh7 9. Rxe4 fxe4 10. Kg2
Rb1 11. a7 Rxb7 12. a8=Q Rb2+ 13. Kh3 Rxh2+ 14. Kg3 h5 15. Qe8 h4+ 16. Kg4 Rf2
17. Bh3 Nd4 18. Kg5 e3 19. Be6 Nxe6+ 20. dxe6 Rg2+ 21. Kxh4 Rh2+ 22. Kg5 Rg2+
23. Kf5 g6+ 24. Ke4 e2 25. Qe7+ Kg8 26. Qf7+ Kh8 27. Qf6+ Kg8 28. Qd8+ Kg7 29.
Qa5 Kf6 30. Kf3 Rh2 31. Qd2 Kxe6 $11 32. Kg3 Rh5 33. Qxe2 $11) 8... fxe4 $11 9.
Kg2 Kh7 10. a7 Ra1 11. b7 Rxa7 12. b8=Q Ra2+ 13. Kg3 Nd4 14. Qb1 Nf5+ 15. Kh3
Ra4 16. Bb5 Rd4 17. Bd7 $18) 4... Rc2+ 5. Re2 Ne4+ 6. Kg1 Nf3+ 7. Kh1 Rc1 8.
Rxe4 $18 *




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