Author: leonid
Date: 07:54:41 03/02/02
Go up one level in this thread
On March 02, 2002 at 10:07:36, Tim Foden wrote:
>On March 02, 2002 at 08:21:10, leonid wrote:
>
>>[D]3Q3R/Q2b2Q1/1Q1q1Q2/1qQqQq1B/Nr1q1rNB/2qkq3/1qnbnq2/Q2K2QR w - -
>>
>>Please indicate your result.
>>
>Green Light Chess v2.16, 48MB Hash, Athlon XP 1700+ says Mate in 9 after just
>over 13.5 minutes.
>
>Cheers, Tim.
Hi, Tim!
Are you sure about 9 moves solution? Or I tried some different position from
what is here, or you put wrong on your side. This position mine looked 9 moves
deep by brute force and found no mate. I don't know exactly shortest mate for
it. It was solved by 11 moves by selective and searched only 9 moves deep by
brute force. I can see 9 moves only during this night, since it took already 4.5
hours. It could be that Heiner, with speedier computer and hash, will say
shortest mate before this.
Cheers,
Leonid.
>>anal
> Game stage: Opening
> Current eval: -0.685
> Ply Time Score Nodes Principal Variation
> 1 0.06 +15.973 13553 Nxb2+ Rxb2 2. Nxf2+
> 2 0.10 +16.152 38665 Nxb2+ Rxb2 2. Qbxd6
> 2 0.38 +16.152 218218 Nxb2+ Rxb2 2. Qbxd6
> 3 0.38 +16.552 220805 Nxb2+ Rxb2 2. Nxf2+ Qxf2 3. Qcxd6 {++}
> 3 0.64 +22.415 430008 Nxb2+ Rxb2 2. Nxf2+ Rxf2 3. Qbxd6 Qbxc5 4. Qfxf5+
> 3 2.26 +22.415 1781082 Nxb2+ Rxb2 2. Nxf2+ Rxf2 3. Qbxd6 Qbxc5 4. Qfxf5+
> 4 8.67 +22.126 7320735 Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Qbxb5+ Rxb5 4. Bxe2+
> Qxe2+ 5. Qxe2+ Rxe2 6. Qxf5+ Bxf5 7. Qg1xd4+ Nxd4
> 8. Qxd5 Rxd5 9. Qxb2
> 4 29.51 +22.126 24640k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Qbxb5+ Rxb5 4. Bxe2+
> Qxe2+ 5. Qxe2+ Rxe2 6. Qxf5+ Bxf5 7. Qg1xd4+ Nxd4
> 8. Qxd5 Rxd5 9. Qxb2
> 5 30.89 +22.526 25662k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Qbxb5+ Rxb5 4. Bxe2+
> Qxe2+ 5. Qxe2+ Rxe2 6. Qxf5+ Bxf5 7. Qg1xd4+ Nxd4
> 8. Qcxd4+ Qbxd4 9. Qa1xd4+ Qxd4 10. Qaxd4+ {ht}
> {++}
> 5 1:25 +32.728 69902k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Bxe2+ Rxe2 4. Qfxf5+
> Qd5e4 5. Qexe4+ Qexe4 6. Qxe4+ Kxe4 7. Qde7+ Qxe7
> 8. Qgxe7+ Qe5 9. Qxb2
> 5 8:06 +32.728 384947k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Bxe2+ Rxe2 4. Qfxf5+
> Qd5e4 5. Qexe4+ Qexe4 6. Qxe4+ Kxe4 7. Qde7+ Qxe7
> 8. Qgxe7+ Qe5 9. Qxb2
> 6 8:30 +33.128 403239k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Bxe2+ Rxe2 4. Qfxf5+
> Qd5e4 5. Qexe4+ Qexe4 6. Qxe4+ Kxe4 7. Q7g6+ Kf4
> 8. Qcxd6+ Kf3 9. Qxb2 {++}
> 6 13:24 +Mate09 782417k Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Bxe2+ Rxe2 4. Qcxd4+
> Qexd4 5. Qgxd4+ Nxd4 6. Qxb5+ Kc3 7. Qexd4+ Qxd4
> 8. Qfxd4+ {ht}
> 6 35:16 +Mate09 2669m Nxb2+ Qxb2 2. Nxf2+ Rxf2 3. Bxe2+ Rxe2 4. Qcxd4+
> Qexd4 5. Qgxd4+ Nxd4 6. Qxb5+ Kc3 7. Qexd4+ Qxd4
> 8. Qfxd4+ {ht}
> 7 35:16 0/92 Nxb2+ >exit
> local: t=35:20 nps=1261339.4 n=2674492448 (20.1% / 79.9%) fh=98.2%
> total: t=35:20 nps=1261339.4 n=2674492448 draws=111018
> trans: probes=238145841 hits=25191836 (10.58%) draft=21703081 (9.11%)
> tcuts: exact=345 (0.00%) upper=15579471 (6.54%) lower=5611293 (2.36%)
> tstor: exact=839 (0.00%) upper=163953756 (80.32%) lower=40177224 (19.68%)
> ext: check=483450792 recap=15090375 ppush=0 1rep=5197994 thrt=0
> q-moves: gen=660311526 tested=81451141 made/un=24460910 max-dep=6
> max eval diff: part-1=2.866 part-2=1.935
>>
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