Author: Tim Foden
Date: 01:02:12 09/19/01
Go up one level in this thread
On September 19, 2001 at 02:27:56, Steve Timson wrote:
>Thanks for putting this together.
>
>Chester scores 120/201 at 10 seconds (100 in 5 seconds, 57 in 1 second), on a
>1.2Ghz Athlon.
>
>With just a quick glance:
>
>Might Qh5+ be an alternate solution to 1179?
GLC does like Qh5+, but claims Rh4+ is a mate in 6:
Line 057: Test [Rh4+]...
Game stage: Middle game
Current eval: 1.55
Ply Time Score Nodes Principal Variation
3 0.04 +2.653 6456 Qh5+ Kg2 Bd4 Rh1 Qxd5 {ht}
3 0.07 +2.653 9752 Qh5+ Kg2 Bd4 Rh1 Qxd5 {ht}
4 0.07 ++ 11125 Qh5+ (a=2.25 b=3.05 e=3.05)
4 0.09 +4.301 26878 Qh5+ Kg2 Bd4 Qd2 Bxg1 Kxg1 Rxa3
4 0.12 +4.301 37383 Qh5+ Kg2 Bd4 Qd2 Bxg1 Kxg1 Rxa3
5 0.21 ++ 86793 Qh5+ (a=3.90 b=4.70 e=4.70)
5 0.23 +5.902 104206 Qh5+ Kg2 Rc3 Ne3 Rxc2+ Qxc2 Rxe3 Qc4 Qf3+ Kh2 Bxg3+
5 0.31 +5.902 141430 Qh5+ Kg2 Rc3 Ne3 Rxc2+ Qxc2 Rxe3 Qc4 Qf3+ Kh2 Bxg3+
6 0.33 ++ 154790 Qh5+ (a=5.50 b=6.30 e=6.30)
6 0.81 -- 493854 Qh5+ (a=6.30 b=321.00 e=6.30)
6 1.20 +5.874 779171 Qh5+ Kg2 Bxg3 Rf2 Bf4 Ne3 Bxe3 Qd1
6 1.39 +5.914 919449 Rc3 Ne3 Rexe3 Rxc3 Rxc3 Qd2 dxc5 {ht}
6 1.46 +5.914 960873 Rc3 Ne3 Rexe3 Rxc3 Rxc3 Qd2 dxc5 {ht}
7 1.51 ++ 995770 Rc3 (a=5.51 b=6.31 e=6.31)
7 1.56 +6.592 1026180 Rc3 Kg2 Re2+ Rxe2 Rxc1 c6 Qg4 Re3 bxc6
7 2.50 +10.073 1712719 Qh5+ Kg2 Bxg3 Rc3 Qe2+ Kxg3 Rg4+ Kh3 Rxg1 Ng3 Qg2+
Kh4 Rxc1 Rxb3 Qxd5
7 3.78 +Mate06 2624651 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
{ht}
7 4.22 +Mate06 2994242 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
{ht}
8 4.35 +Mate06 3112851 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
8 5.21 +Mate06 3898344 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
9 5.40 +Mate06 4072493 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
9 6.99 +Mate06 5600671 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
10 7.20 +Mate06 5805871 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
10 10.00 +Mate06 8587720 Rh4+ Kxh4 Qh7+ Qh6 Qxh6+ Kg4 f5+ Kxf5 Qh5+ Ke6 Qf7#
local: t=10.02 nps=858323.1 n=8603831 (26.2% / 73.8%) fh=96.9%
total: t=9:30 nps=601326.0 n=343315641 draws=1942
trans: probes=1674873 hits=457071 (27.29%) draft=230411 (13.76%)
tcuts: exact=212 (0.01%) upper=91649 (5.47%) lower=88192 (5.27%)
tstor: exact=775 (0.11%) upper=426749 (62.35%) lower=256913 (37.54%)
ext: check=801070 recap=13565 ppush=904 1rep=35875 thrt=0
q-moves: gen=1107663 tested=374972 made/un=44342 max-dep=9
max eval diff: part-1=2.258 part-2=1.254
!m Re4-h4 320989 422
move e4h4
SetupTimePostMove( 1, -0.02 )
time left 10.00
>Might Bb7 be an alternate solution to 1197?
GLC claims that:
Rxg2+ is a mate in 11.
Bb7 is a mate in 8.
Game stage: Middle game
Current eval: 1.25
Ply Time Score Nodes Principal Variation
3 0.08 -- 5589 Rxe1+ (a=-0.22 b=0.58 e=-0.22)
3 0.08 -0.893 7434 Rxe1+ Rxe1 Rxg2+ Kxg2 Qd2+ Qf2 Qxf2+ Kxf2 Bg4
3 0.09 -0.405 8927 Bb7 Rxe3 Rxg2+ Kf1 Qxh2 Qxa7
3 0.11 -0.405 10766 Bb7 Rxe3 Rxg2+ Kf1 Qxh2 Qxa7
4 0.11 ++ 12048 Bb7 (a=-0.81 b=-0.01 e=-0.01)
4 0.11 +0.497 13543 Bb7 Qxe3 Rxg2+ Kf1 Qxe3 Rxe3 Rxh2
4 0.13 +0.886 21406 Rxg2+ Kxg2 Bb7+ Kg1 Rxg3+ Kf1 Qxh2 Qxa7
4 0.16 +0.886 27266 Rxg2+ Kxg2 Bb7+ Kg1 Rxg3+ Kf1 Qxh2 Qxa7
5 0.16 ++ 27642 Rxg2+ (a=0.49 b=1.29 e=1.29)
5 0.17 +4.012 33854 Rxg2+ Kxg2 Bb7+ Kg1 Rxg3+ Kf1 Ba6+ Re2 Bxe2+ Kxe2
Qxh2+
5 0.20 +5.259 53075 Bb7 Qxe3 Rxg2+ Kf1 Qf6+ Qf4 Qa6+ Re2 Rxe2
5 0.23 +5.259 60302 Bb7 Qxe3 Rxg2+ Kf1 Qf6+ Qf4 Qa6+ Re2 Rxe2
6 0.28 ++ 80350 Bb7 (a=4.86 b=5.66 e=5.66)
6 0.42 +10.488 176153 Bb7 Kh1 Bxg2+ Kg1 Rxe1+ Rxe1 Bc6 Re2 Rxe2 h3
6 0.49 +10.488 215009 Bb7 Kh1 Bxg2+ Kg1 Rxe1+ Rxe1 Bc6 Re2 Rxe2 h3
7 0.54 ++ 241984 Bb7 (a=10.09 b=10.89 e=10.89)
7 0.73 +12.070 377102 Bb7 Qc8+ Bxc8 Red1 Qb6 Kh1 Ree2 Rac1 Rxg2 Rxc8+
7 0.90 +12.070 494634 Bb7 Qc8+ Bxc8 Red1 Qb6 Kh1 Ree2 Rac1 Rxg2 Rxc8+
8 1.08 ++ 600773 Bb7 (a=11.67 b=12.47 e=12.47)
8 1.41 +12.492 820667 Bb7 Qc8+ Bxc8 Red1 Qb6 Kh1 Bg4 Rd5 Ree2
8 1.72 +12.492 1054956 Bb7 Qc8+ Bxc8 Red1 Qb6 Kh1 Bg4 Rd5 Ree2
9 2.12 ++ 1280848 Bb7 (a=12.09 b=12.89 e=12.89)
9 4.50 +15.262 3222122 Bb7 Qc8+ Bxc8 Red1 Qb6 Kh1 Rxg2 Rd8+ Qxd8 Kxg2 Bg4
9 14.65 +Mate11 11522k Rxg2+ Kf1 Ba6+ Kxg2 Bb7+
9 14.87 +Mate11 11710k Rxg2+ Kf1 Ba6+ Kxg2 Bb7+
10 19.12 +Mate11 15408k Rxg2+ Kf1 Ba6+ Kxg2 Bb7+
10 42.11 +Mate09 36679k Bb7 Kh1 Bxg2+ Kg1 Bb7 Qc2 Rxc2 Re2 Rxg3+ hxg3 Qh1+
Kf2 Qh2+ Ke3 Qxg3+ Kd4 Qc3#
10 42.81 +Mate09 37305k Bb7 Kh1 Bxg2+ Kg1 Bb7 Qc2 Rxc2 Re2 Rxg3+ hxg3 Qh1+
Kf2 Qh2+ Ke3 Qxg3+ Kd4 Qc3#
11 48.35 +Mate08 42325k Bb7 Qc8+ Bxc8 Rac1 Rxe1+ Rxe1 Qb6+ Kh1 Rb1 Rf1
Rxf1+ Bxf1 Bb7+ Bg2 Qb1#
11 59.76 +Mate08 53564k Bb7 Qc8+ Bxc8 Rac1 Rxe1+ Rxe1 Qb6+ Kh1 Rb1 Rf1
Rxf1+ Bxf1 Bb7+ Bg2 Qb1#
12 1:08 +Mate08 61340k Bb7 Qc8+ Bxc8 Rac1 Rxe1+ Rxe1 Qb6+ Kh1 Rb1 Rf1
Rxf1+ Bxf1 Bb7+ Bg2 Qb1#
12 1:37 +Mate08 90539k Bb7 Qc8+ Bxc8 Rac1 Rxe1+ Rxe1 Qb6+ Kh1 Rb1 Rf1
Rxf1+ Bxf1 Bb7+ Bg2 Qb1#
13 1:37 0/53 Bb7 >exit
local: t=1:45 nps=923433.7 n=97682662 (26.4% / 73.6%) fh=93.9%
total: t=1:45 nps=923433.7 n=97682662 draws=90594
trans: probes=18207928 hits=3746342 (20.58%) draft=2618672 (14.38%)
tcuts: exact=847 (0.00%) upper=1574166 (8.65%) lower=618630 (3.40%)
tstor: exact=1351 (0.01%) upper=6672715 (70.72%) lower=2761388 (29.27%)
ext: check=12419868 recap=105996 ppush=146 1rep=763998 thrt=0
q-moves: gen=601675 tested=346497 made/un=51141 max-dep=7
max eval diff: part-1=2.738 part-2=1.853
Cheers, Tim.
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