Author: leonid
Date: 11:33:47 08/25/03
Go up one level in this thread
On August 25, 2003 at 13:10:40, Tim Foden wrote:
>On August 25, 2003 at 09:49:46, leonid wrote:
>
>>On August 25, 2003 at 08:04:04, leonid wrote:
>>
>>Try this position that is only slightly harder than previous one:
>>
>>[d]3Q4/5q1k/4ppp1/2Kp1N1B/RR6/3Prr2/4nP1b/3b2n1 w - -
>>
>>Please indicate Your solution.
>>
>>Leonid.
>
>Hi Leonid,
>
>GLC 3.00, AXP 1.67GHz, 24MB Hash gives Rb7 as mate-in-12 after 1 sec, and
>mate-in-11 after 1.5 secs.
Hi Tim,
Mine found mate in 12 in 1 second but had nothing in 11 moves. I will try to
look with my selective search under different parameters in 11.
Cheers,
Leonid.
>Cheers, Tim.
>
>Analysis:
>
>>anal
> Game stage: Middle game
> Current eval: -10.052
> Ply Time Score Nodes Principal variation
> 3 0.010 -5.806 5914 Nxe3 Rxe3 2. fxe3 gxh5
> 4 0.010 -5.406 9923 Bxf3 {++} gxf5 2. Rh4+ Kg7 3. fxe3
> 4 0.021 -4.251 21522 Ra8 Qc7+ 2. Qxc7+ Bxc7 3. Bxg6+ Kxg6 4. Nxe3 Rxe3
> 5. fxe3
> 4 0.031 -4.251 26989 Ra8 Qc7+ 2. Qxc7+ Bxc7 3. Bxg6+ Kxg6 4. Nxe3 Rxe3
> 5. fxe3
> 5 0.051 -3.851 50913 Bxf3 {++} gxf5 2. Rh4+ Kg6 3. Bh5+ Kg5 4. Bxf7
> 5 0.081 -3.490 83558 Bxf3 d4 2. Nxe3 Bxa4 3. Bxe2 Nxe2 4. Rxa4 dxe3 5.
> fxe3
> 5 0.101 -3.490 101315 Bxf3 d4 2. Nxe3 Bxa4 3. Bxe2 Nxe2 4. Rxa4 dxe3 5.
> fxe3
> 6 0.121 -3.090 119643 Bxf3 {++} d4 2. Nxe3 Bxa4 3. Rb7 dxe3 4. Rxf7+
> 6 0.151 -2.482 145631 Bxf3 d4 2. Nxe3 Bxa4 3. Rb7 Qxb7 4. Bxb7 dxe3 5.
> fxe3
> 6 0.201 +0.000 193594 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qd4+
> 6 0.231 +0.000 239470 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qd4+
> 7 0.261 +0.400 263548 Rb7 {++} Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+
> Ke5 5. d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+
> Rf5 9. Qxh2+ Rg3 10. Qxg3+ Rf4 {ht}
> 7 0.431 +0.399 486432 Rb7 {--} Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+
> Kxf5 5. fxe3
> 7 0.451 +0.000 516719 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+ Kxf5
> 5. Qg4+ Ke5 6. d4+ Nxd4 7. Qxd4+ Kf5 8. Qg4+ Ke5
> 9. Qd4+
> 7 0.571 +0.000 681145 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+ Kxf5
> 5. Qg4+ Ke5 6. d4+ Nxd4 7. Qxd4+ Kf5 8. Qg4+ Ke5
> 9. Qd4+
> 8 0.621 +0.400 737236 Rb7 {++} Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+
> Kxf5 5. Qg4+ Ke5 6. d4+ Nxd4 7. Qxd4+ Kf5 8.
> Qg4+ Ke5 9. Qh5+ Rf5 10. Qxh2+ Rf4 11. Rxf4
> 8 0.912 +Mate12 1150708 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+ Kxf5
> 5. Qg4+ Ke5 6. d4+ Nxd4 7. Qxd4+ Kf5 8. Qg4+ Ke5
> 9. Qh5+ Rf5 10. Qxh2+ Rg3 11. Qxg3+ Rf4 12.
> Qxf4#
> 8 1.172 +Mate12 1579591 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Qg7 4. Qxg7+ Kxf5
> 5. Qg4+ Ke5 6. d4+ Nxd4 7. Qxd4+ Kf5 8. Qg4+ Ke5
> 9. Qh5+ Rf5 10. Qxh2+ Rg3 11. Qxg3+ Rf4 12.
> Qxf4#
> 9 1.473 +Mate11 1964729 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4#
> 9 2.073 +Mate11 2944978 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4#
> 10 2.734 +Mate11 3800067 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 10 4.537 +Mate11 6701579 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 11 5.919 +Mate11 8590605 Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 11 11.056 +Mate11 16796k Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 12 13.931 +Mate11 20775k Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 12 28.942 +Mate11 45005k Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
> 13 36.423 +Mate11 55677k Rb7 Qxb7 2. Bxg6+ Kxg6 3. Qg8+ Kxf5 4. Qg4+ Ke5 5.
> d4+ Nxd4 6. Qxd4+ Kf5 7. Qg4+ Ke5 8. Qh5+ Rf5 9.
> Qxh2+ Rg3 10. Qxg3+ Rf4 11. Qxf4# {ht}
>Analyse>exit
> local: t=36.503 nps=1528385.4 n=55790654 (25.9% / 74.1%)
> total: t=36.503 nps=1528385.4 n=55790654
> stats: fh=94.5%/1.67%/1.054% draws=24073
> trans: probes=13448929 hits=2628684 (19.55%) draft=1520526 (11.31%)
> tcuts: exact=134 (0.00%) upper=780056 (5.80%) lower=600158 (4.46%)
> tstor: exact=322 (0.01%) upper=3951106 (64.53%) lower=2171848 (35.47%)
> ext: check=5312762 recap=89430 ppush=11 1rep=435522 thrt=0
> q-moves: gen=546982 tested=153697 made/un=50144 max-dep=8
> max eval diff: part-1=1.891 part-2=2.130
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.