Author: Rob Basham
Date: 11:49:28 08/01/04
Go up one level in this thread
On August 01, 2004 at 13:44:21, John Merlino wrote:
>On August 01, 2004 at 12:17:21, Rob Basham wrote:
>
>>On August 01, 2004 at 12:00:50, Rob Basham wrote:
>>
>>>[D]2q3k1/1p4pp/3p1b2/pb1Pp3/r5P1/1P1nQN1P/P2N1P2/R1B3K1 b - - 0 1
>>>
>>>Here black plays ....Rxg4+ and wins...
>>>
>>>From a game in 1995...Hiteck vrs Deep Blue
>>>
>>>Novag Scorpio plays RxPch in 85 sec.
>>>
>>>RISC 2500 ...................78 sec. 6 ply
>>>
>>>Super Novag (6 mhz) ..........12 sec....!
>>
>>the moves...
>>1... Rxg4+ {11s} 2. Kh1 {3s} Rf4 {9s} 3. Kg2 {3s} Rxf3
>>{17s} 4. Nxf3 {4s} Nf4+ {8s} 5. Qxf4 {5s} exf4 {1s} 6. Bb2
>>{7s} Bxb2 {4s} 7. Re1 {3s} Qf5 {14s} 8. a4 {16s} Bd7 {6s}
>>9. Ng1 {4s} f3+ {38s} 10. Kh2 {11s} Be5+ {30s} 11. Kh1
>>{23s} Qf4 {11s} 12. Rxe5 {7s} dxe5 {3s} 13. b4 {2s} Bxh3
>>{25s} 14. Nxh3 {3s} Qg4 {6s} 15. Nf4 {5s} exf4 {3s}
>>16. bxa5 {3s} Qg2# {3s} *
>>
>>
>>Shredder 5 plays all the "correct moves"....up to ...9. f3+...etc.
>>
>>Also see if your computer finds....3...Rxf3! ..very nice moves here.
>>
>>Rob
>
>The King finds all of these moves instantly, up until 9...f3+. And that's
>because it finds 9...Bd4, announcing Mate in 11 after 1:20 on a P4-2.4:
>
>[D]6k1/1p1b2pp/3p4/p2P1q2/P4p2/1P5P/1b3PK1/4R1N1 b - - 0 9
>
>Time Depth Score Positions Moves
>0:00 1/3 -13.68 996 9...Qxd5+ 10.f3 Qxb3 11.Re4
>0:00 1/4 -13.84 4641 9...Qxd5+ 10.f3 Qxb3 11.Re4 Be5
>0:00 1/5 -14.30 14862 9...Qxd5+ 10.f3 Qxb3 11.Re7 Bc6
> 12.h4 Bxa4
>0:00 1/6 -14.35 56649 9...Qxd5+ 10.f3 Qxb3 11.Re4 Be5
> 12.Ne2 Bxh3+ 13.Kf2
>0:00 2/7 -14.64 111358 9...Qxd5+ 10.f3 Qg5+ 11.Kh1 Bxh3
> 12.Nxh3 Qg3 13.Nxf4 Qxe1+ 14.Kg2
> Qd1 15.Kg3 Qxb3
>0:01 2/8 -15.16 407314 9...Qxd5+ 10.Kh2 Bc6 11.f3 Qg5
> 12.Re2 Qg3+ 13.Kh1 Bxf3+ 14.Nxf3
> Qxf3+ 15.Rg2 Qxh3+ 16.Kg1 Bd4+
> 17.Kf1 Qxb3
>0:02 2/8 -15.92 555015 9...Bd4 10.Kh2 Bxf2 11.Rf1 Bg3+
> 12.Kh1 Qxd5+ 13.Rf3 Qd2 14.Rxg3
> fxg3
>0:06 2/9 -19.33 1625224 9...Bd4 10.Kh2 Bxf2 11.Kg2 Bxe1
> 12.Kf1 Bg3 13.Nf3 Qd3+ 14.Kg2 Bxh3+
> 15.Kxh3 Qxf3
>0:12 3/10 -21.21 3522639 9...Bd4 10.Kh2 Bxf2 11.Re2 Bg3+
> 12.Kg2 Qxd5+ 13.Nf3 Bc6 14.Rf2
> Bxf2 15.Kxf2 Qxf3+ 16.Ke1 Qe3+
> 17.Kf1 Qxh3+ 18.Ke1 Qxb3
>0:27 3/11 -21.37 8234904 9...Bd4 10.Kh2 Bxf2 11.Re2 Bg3+
> 12.Kg2 Qxd5+ 13.Nf3 Bc6 14.Rf2
> Bxf2 15.Kxf2 Qxf3+ 16.Ke1 Qxh3
> 17.Kf2 Qxb3
>1:20 3/12 -Mate11 24965251 9...Bd4 10.b4 f3+ 11.Kh1 Bxf2 12.Rf1
> Bxg1 13.Kxg1 Qg6+ 14.Kf2 Qg2+ 15.Ke3
> Qe2+ 16.Kf4 g5+ 17.Kxg5 Qe5+ 18.Kh4
> Qf4+ 19.Kh5 Be8#
>
>However, further searching and poking about leads me to believe that 9...Bd4
>leads to mate in 9, and 9...f3+ is a mate in 11. So 9...Bd4 is the "optimal"
>move.
>
>Additionally, 10...Qf4+ is an equivalent alternate to 10...Be5+.
>
>jm
Thanks John...
Move 9....Bd4 ....mate in 11...!
that's great! Deep Blue surely missed that one....:-)
thanks!
rob
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