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Subject: Re: only e8=N!! wins here

Author: Vincent Lejeune

Date: 04:43:03 03/27/05

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On March 27, 2005 at 07:36:42, chandler yergin wrote:

>On March 26, 2005 at 18:18:50, Mike Byrne wrote:
>
>>source: Selective Search magazine
>>
>>White(2): [d]8/p3P3/rp6/kp6/1p4PK/1P6/1P5p/4r2R w - - 0 1
>>White(1): st 120
>>search time set to 120.00.
>>White(1): g
>>              clearing hash tables
>>              time surplus  59.67  time limit 2:00 (2:00) [easy move]
>>              depth   time  score   variation (1)
>>starting thread 1
>>               14->   0.08   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               15     0.08   0.01   1. Rxe1 h1=Q+ 2. Rxh1
>>               15->   0.09   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=3)
>>               16     0.11   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               16->   0.17   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=3)
>>               17     0.17   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               17->   0.22   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=3)
>>               18     0.23   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               18->   0.30   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               19     0.36   0.01   1. Rxe1 h1=Q+ 2. Rxh1
>>               19->   2.11   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=3)
>>               20     2.17   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               20->  21.17   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=3)
>>               21    21.31   0.01   1. Rxe1 h1=Q+ 2. Rxh1 (s=2)
>>               21    25.97     +1   1. e8=N!!
>>               21     1:25   1.33   1. e8=N Rg1 2. Kh5 Rc1 3. g5 Rg1 4.
>>                                    Kh6 Rf1 5. g6 Rg1 6. Kh7 Rc1 7. g7
>>                                    Rg1 8. Kh8 Rc1 9. g8=Q Rg1 10. Qg3
>>                                    Rxh1 11. Nc7 Rd1 12. Qxh2
>>               21->   1:25   1.33   1. e8=N Rg1 2. Kh5 Rc1 3. g5 Rg1 4.
>>                                    Kh6 Rf1 5. g6 Rg1 6. Kh7 Rc1 7. g7
>>                                    Rg1 8. Kh8 Rc1 9. g8=Q Rg1 10. Qg3
>>                                    Rxh1 11. Nc7 Rd1 12. Qxh2
>>               22     1:45     +1   1. e8=N!!
>>              time=2:00  cpu=357684%  mat=-6  n=417517453  fh=89%  nps=3.48M
>>              ext-> chk=24204251 cap=581186 pp=2733634 1rep=657615 mate=89868
>>              predicted=2  nodes=417517453  evals=224117562  50move=0
>>              endgame tablebase-> probes=0  hits=0
>>              SMP->  split=2723  stop=373  data=10/64  cpu=715823:17  elap=2:00
>>
>>White(1): e8=N
>>              time used:   2:00
>>Black(1):
>
>
>Sorry it's a DRAW!
>[Event "?"]
>[Site "?"]
>[Date "????.??.??"]
>[Round "?"]
>[White "New game"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "[D]8/p3P3/rp6/kp6/1p4PK/1P6/1P5p/4r2R w - - 0 1"]
>[PlyCount "3"]
>
>{Shredder 8: 1)} 1. Rxe1 ({Shredder 8: 2)} 1. e8=N Rg1 2. Nd6 Rxg4+ 3. Kxg4 {
>[%eval 0,17]}) 1... h1=Q+ 2. Rxh1 {[%eval 0,17]} *


2.Nd6 is a mistake, the winning line is above : 1. e8=N! Rg1 2. Kh5! Rc1 3. g5!
Rg1 4.Kh6! Rf1 5. g6! Rg1 6. Kh7! Rc1 7. g7! Rg1 8. Kh8! Rc1 9. g8=Q! Rg1 10.
Qg3 Rxh1 11. Nc7 Rd1 12. Qxh2



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