Author: Bernhard Bauer
Date: 01:27:16 04/06/00
Go up one level in this thread
On April 04, 2000 at 18:27:01, José Antônio Fabiano Mendes wrote:
>On April 02, 2000 at 19:13:36, Timothy J. Frohlick wrote:
>
>>[D]8/3qk3/8/8/3NN3/2N2N2/8/4K3 w
>>
>>
>>Both Rebel 10c and Hiarcs 7.32 choose K to e2. Rebel solves it in 37 moves and
>>Hiarcs takes 24 moves.
>>
>>I guess that most of us will never see this position in over-the-board play. I
>>have not seen it as a chess puzzle but I am sure that somebody did this in the
>>past. I do not think that it is solvable unless the white king comes into play.
>>
>>
>>Have fun.
>>
>>
>>Tim Frohlick
>
> A.A.Troitzky[Chess Studies,1937(page 126)]
>[D]2k5/8/3KN3/2NNN3/8/8/3q4/8 w - -
>Troitzky puts this position forward as a standard one for
>forcing a win with four knights against a queen.He writes,
>"The win is achieved by moving the whole position to the
>left."This is the method wherever the black queen is
>situated and provided the black king is on a7,a8,b8 or c8.
>Source:"Test Tube Chess",A.J.Roycroft,1972,page 214,Stackpole Books
MyCrafty gives a mate in 10
(4) 13-> 1:29 11.31 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd4 Qh3 4.
Ncb6 Qh7 5. Ncd7+ Qxd7+ 6. Kxd7 Ka7
7. Kc8 Ka6 8. Nc4 <HT>
14 1:48 ++ 1. Nc4!!
(3) 14 5:12 Mat11 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd6 Qc2 4.
Nb4 Qh7 5. Nba6+ Ka7 6. Nc8+ Ka8 7.
Nec7+ Qxc7+ 8. Nxc7+ Kb8 9. Nb6 Ka7
10. Nb5+ Kb8 11. Ncd7# <HT>
14-> 6:03 Mat11 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd6 Qc2 4.
Nb4 Qh7 5. Nba6+ Ka7 6. Nc8+ Ka8 7.
Nec7+ Qxc7+ 8. Nxc7+ Kb8 9. Nb6 Ka7
10. Nb5+ Kb8 11. Ncd7# <HT>
15 7:30 Mat10 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd6 Qc2 4.
Nb4 Qh7 5. Nd7+ Qxd7+ 6. Kxd7 Ka7 7.
Kc6 Kb8 8. Kb6 Ka8 9. Nc7+ Kb8 10.
Nc6#
(2) 15-> 10:39 Mat10 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd6 Qc2 4.
Nb4 Qh7 5. Nd7+ Qxd7+ 6. Kxd7 Ka7 7.
Kc6 Kb8 8. Kb6 Ka8 9. Nc7+ Kb8 10.
Nc6#
16 14:50 Mat10 1. Nc4 Qh2+ 2. Kc6 Kb8 3. Nd6 Qc2 4.
Nb4 Qh7 5. Nd7+ Qxd7+ 6. Kxd7 Ka7 7.
Kc6 Kb8 8. Kb6 Ka8 9. Nc7+ Kb8 10.
Nc6#
time=15:00 cpu=201% mat=3 n=663078447 fh=10% nps=736532
ext-> checks=45157171 recaps=0 pawns=0 1rep=2074505 thrt:59900
predicted=0 nodes=663078447 evals=1
endgame tablebase-> probes done=655803 successful=571374
SMP-> split=1705 stop=168 data=9/256 cpu=30:17 elap=15:00
mate in 10 moves.
Kind regards
Bernhard
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