Draw?

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bob
Posts: 20641
Joined: Mon Feb 27, 2006 6:30 pm
Location: Birmingham, AL

Re: Draw?

Post by bob » Sat Aug 29, 2015 1:11 am

Jack Lad wrote:
bob wrote:One interesting test is to remove the rooks, since this is a KNNKP type ending, and sure enough, it appears that if rooks are traded, this is a win for black because of the poor white h pawn location.
[d] 1n1qk1n1/8/8/8/8/8/7P/3QK3 w - - 0 1
In this position if white simply trades queens then the position is lost. Better to play Qe2+ instead but can white hold on?
After Qe2+ Qe7 isn't this the same thing again? Queens are coming off, resulting position is won for black...

rabbits23
Posts: 144
Joined: Fri Sep 12, 2014 2:57 am
Location: Randwick Australia

Re: Draw?

Post by rabbits23 » Sat Aug 29, 2015 8:18 am

[Event "Shootout (Stockfish664, (120m+4s)/26+100"]
[Site "?"]
[Date "2015.08.28"]
[[Result "0-1"]
[WhiteElo "180"]
[BlackElo "260"]
[Annotator "Johnson,Al"]
[SetUp "1"]
[FEN "k6n/7R/6n1/8/3K4/8/3r3P/8 w - - 0 0"]
[PlyCount "62"]

1. Ke3 Rd8 2. h3 Ne5 3. Rc7 Nhf7 4. Ke4 Kb8 5. Rc3 Kb7 6. Rc1 Rh8 7. Kd5 Rxh3
8. Rc2 Nc6 9. Rc1 Ncd8 10. Ke4 Rh5 11. Rc2 Nd6+ 12. Kf4 Ne6+ 13. Kf3 Rh4 14.
Rc1 Nf5 15. Rb1+ {-54.19/36 1688} Kc6 {-#20/43 468} 16. Ke2 {-#19/44 459} Rh3 {
-#19/44 875} 17. Kd1 {-#17/42 433 (Ke2-f2)} Nfd4 {-#17/43 581} 18. Kd2 {-#14/
45 988 (Rb1-b8)} Nc5 {-#14/44 493} 19. Rb8 {-#13/43 292} Ne4+ {-#13/43 643} 20.
Kc1 {-#12/45 583} Rh1+ {-#12/46 1152} 21. Kb2 {-#11/1 0} Rh2+ {-#11/51 389} 22.
Ka1 {-#10/49 375} Kc5 {-#10/52 368} 23. Rb2 {-#9/48 462 (Rb8-c8+)} Rh1+ {-#9/
46 386} 24. Rb1 {-#8/56 456} Rh5 {-#8/55 460} 25. Kb2 {-#7/79 590 (Rb1-b7)}
Rh2+ {-#7/81 517} 26. Ka3 {-#6/80 706} Nd2 {-#6/82 882} 27. Kb2 {-#5/86 242
(Ka3-a2)} Nxb1+ {-#5/93 162} 28. Ka1 {-#4/94 167 (Kb2-c1)} Kc4 {-#4/96 361} 29.
Kxb1 {-#3/1 0} Kc3 {-#3/127 0} 30. Ka1 {-#2/127 0} Nb3+ {-#2/127 0} 31. Kb1 {
-#1/1 0} Rb2# {-#1/127 0} 0-1

Stockfish 6 says Black mates in 31

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