Author: F. Huber
Date: 07:54:08 03/27/05
Go up one level in this thread
On March 27, 2005 at 10:04:45, Vincent Lejeune wrote:
>On March 27, 2005 at 09:30:30, chandler yergin wrote:
>
>>On March 27, 2005 at 07:43:03, Vincent Lejeune wrote:
>>
>>>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
>>
>>I notice that the line you give of course has a 'high' evaluation
>>as winning; but you didn't take the Line to Mate!
>>
>>I know you respect Fritz & Shredder analysis,,
>>Right now I have Shredder running and at 26 Ply, so far it hasn't found a Mate.
>>
>>I'll keep it runnning, but would apprecite it, if you have found a Mate
>>to please Post it, & save me some time.
>>
>>Thanks,
>>Chan
>
>
>Ok, here's the whole line :
>
>[Event "?"]
>[Site "?"]
>[Date "????.??.??"]
>[Round "?"]
>[White "e8=N!!"]
>[Black "?"]
>[Result "*"]
>[SetUp "1"]
>[FEN "8/p3P3/rp6/kp6/1p4PK/1P6/1P5p/4r2R w - - 0 1"]
>[PlyCount "31"]
>
>1. e8=N Rg1 2. Kh5 Rd1 3. g5 Rg1 4. Kh6 Rd1 5. g6 Rg1 6. Kh7 Rf1 7. g7 Rg1 8.
>Kh8 Rc1 9. g8=Q Rg1 10. Qg7 Re1 11. Kh7 Rg1 12. Qg6 Re1 13. Kh6 Rg1 14. Qg5 Rf1
>15. Kh5 Rg1 16. Qg3 *
>
>Now, white king will go shelter on g2 and white have 2 mate threat N->d6->b7
>mate and R->a1 mate
Here´s a complete line showing a forced #21:
ChestUCI Ver.4.0:
CPU: Celeron 400MHz
FEN: 8/p3P3/rp6/kp6/1p4PK/1P6/1P5p/4r2R w - -
Parameters found in Database !
Search for Special-Mate [C0/R-4/K1/P1/X14] in 21 ... (Hash=48MB)
21 00:15 601.388 52.892 +M21 1.e8S
Search completed ... (Time=14.39s)
Mate in 21 found ! (00:14)
1.e8N Rg1 2.Kh5 Rf1 3.g5 Rg1 4.Kh6 Rf1 5.g6 Rg1 6.Kh7 Rf1 7.g7 Rg1 8.Kh8 Rf1
9.g8Q Rg1 10.Qg7 Rf1 11.Kh7 Rg1 12.Qg6 Rf1 13.Kh6 Rg1 14.Qg5 Rf1 15.Kh5 Rg1
16.Qg3 Rf1 17.Kh4 Re1 18.Nd6 Re4+ 19.Kh3 Rh4+ 20.Kg2 Rg4 21.Nb7#
1 Solution (Mate in 21)
Regards,
Franz.
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