Author: Eelco de Groot
Date: 09:59:56 08/02/00
Go up one level in this thread
Jouni, I hope that Robert Hyatt returns soon, I can only repost these messages,
this one about the first 9 positions:
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Posted by Robert Hyatt on July 26, 2000 at 15:30:22:
In Reply to: Re: 9 interesting positions !! posted by Robert Hyatt on July 26,
2000 at 00:11:12:
On July 26, 2000 at 00:11:12, Robert Hyatt wrote:
>On July 25, 2000 at 14:04:14, Ed Schröder wrote:
>
>>On July 25, 2000 at 08:14:36, Marek Soszynski wrote:
>>
>>>On July 25, 2000 at 07:10:50, Shep wrote:
>>>
>>>>On July 24, 2000 at 12:13:08, Côme wrote:
>>>>
>>>>>
>>>>>Hello there are 9 interesting positions for chess programs:
>>>>>
>>>>>r1bq1rk1/ppp3pp/2np4/4pp2/N1P1P3/3P2P1/PP2NKBP/R1BQ4 b - - bm f4!;
>>>>>2r1rb1k/3q1ppb/p2p4/1pn1p3/4P1QB/1PP1R2P/P3NPB1/3R2K1 w - - bm Ng3!;
>>>>>5b1k/2r2bp1/2rp1p2/1p2pB1P/pPn1PP2/2P4R/P6B/2NRK3 w - - bm fxe5!;
>>>>>2rqkb1r/1b1n1ppp/pn1pp3/1p6/3NP1P1/2NBBP2/PPP2Q1P/1K1R3R b k - bm Rxc3!;
>>>>>r1b3k1/1p4pp/pn3r2/2bpq3/3N4/PP2B1P1/2PQ2BP/R3KR2 b Q - bm Bg4!;
>>>>>r5k1/1p4pp/pn3r2/2bpqb2/P2N4/1P2B1P1/2PQ2BP/R3KR2 b Q - bm Rc8!;
>>>>>rn1q1rk1/pp1n1p2/3bp1p1/2pp2Pp/5N1P/1P1PP3/PBPNQP2/R3K2R w KQ - bm Nxh5!;
>>>>>r1b2rk1/pp4p1/4pb1B/2P5/Pq2B3/1P6/2QP1P2/2KR2R1 w - - bm Rxg7!;
>>>>>2k5/8/4p3/1p2q3/2p1P3/2P1Q1P1/5P2/6K1 b - - bm b4!;
>>>>
>>>>Just gave some of these a quick shot with DJ6a on a dual PIII-600:
>>>>Rxc3 was not found in 10:00
>>>>Nxh5 was found in 0:25
>>>>Rxg7 was found in 0:39
>>>>
>>>>---
>>>>Shep
>>>
>>>PIII 450
>>>44MB hash
>>>
>>>Process test suite settings:
>>>Maximum time=1800s
>>>Extra ply=4
>>>
>>> Fritz Junior
>>> 6a 6a
>>>
>>>#1 39s 282s
>>>#2 1s* >1800s
>>>#3 >1800s 277s
>>>#4 >1800s >1800s
>>>#5 482s 8s
>>>#6 4s 32s
>>>#7 1s 59s
>>>#8 225s 77s
>>>#9 237s 243s
>>>
>>>*This is the time for Extra ply=4, but later Fritz keeps changing its mind.
>>>
>>>_______________
>>>
>>>Marek Soszynski
>>>Sutton Coldfield Chess Club
>>>http://www.brum2000.swinternet.co.uk/
>>
>>Interesting suite. Latest Rebel:
>
>I'll add crafty in this same format:
>
>
>>
>> Fritz Junior Rebel crafty 17.13
>> 6a 6a
>>
>>#1 39s 282s 132s 108s
>>#2 1s* >1800s >900s 43s
>>#3 >1800s 277s 46s 82s (likes it instantly, but changes)
I should have been clearer. It likes it instantly, but changes to something
else. It changes back at 82 seconds and sticks with the suggested move from
that point forward...
>>#4 >1800s >1800s >900s >600s
>>#5 482s 8s 407s 4s
>>#6 4s 32s 809s 2s
>>#7 1s 59s 7s 21s
>>#8 225s 77s 22s 18s
>>#9 237s 243s >900s 53s
>>
>>Athlon 600, 60 Mb hash. Max time 900s.
>>
>>Ed
>
>
>Quad xeon/550mhz, hash=192M, hashp=32m, tablebases active.
-------------------------------------------------------------------------------------------------
Position Two:
[D]2r1rb1k/3q1ppb/p2p4/1pn1p3/4P1QB/1PP1R2P/P3NPB1/3R2K1 w - -
Robert used his new Crafty 17.13, Dann Corbit reported Crafty 17.11 and 17.12
,-which have the same eval.c- , could not solve this position two, with the
key-move 1.Ng3! They opted for 1.Qxd7 as their choice, so did Rebel Decade 2.0
when I gave it this position. I noticed that at least for ply 9 to 11 Ng3 was
the second move tested by Crafty 17.11 and that it took relatively long to
reject it at these plydepths. I thought therefore it might be also a slight drop
in the evaluation of 1.Qxd7 that makes Crafty 17.13 choose 1.Ng3. Dann reported
an evaluation of ce -12 with his EPD, the log in Crafty's analyze mode, 17.11
and 17.12, gives -0.11 (for 1.Qxd7, at iteration 16). I thought probably this
last figure isn't rounded off? "My" logfiles for position 2, Celeron 500MHz:
Rebel Engine for ECTool. (c) Ed Schröder
Engine version : DECADE 2.0
Hash table size : 256 kb
Analysis mode : Analyzing next move
Refresh interval : 1000 ms
Game begin
00:00 06.12 0.14 Bg2-f3 Qd7-e6 Ne2-g3 Bh7-g6 Ng3-f5 Bg6xf5 e4xf5
00:01 07.00 0.15 Bg2-f3 f7-f5 e4xf5 Qd7xf5 b3-b4 Nc5-a4 Bf3-d5
00:03 08.00 0.16 Bg2-f3 Qd7-c7 Ne2-g3 Bf8-e7 Ng3-f5 Bh7xf5 Qg4xf5
00:09 09.00 0.14 Bg2-f3 f7-f5 e4xf5 Qd7xf5 Bf3-g2 Qf5xg4 h3xg4
00:10 09.01 0.21 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
00:19 10.00 0.21 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
00:42 11.00 0.21 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
04:13 12.00 0.21 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
13:51 13.00 0.18 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
49:01 14.00 0.18 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Ne2-g3 Rc8-c6 Bf3-g4
13:39 15.00 0.19 Qg4xd7 Nc5xd7 Bg2-f3 Nd7-c5 Bf3-g4 Rc8-c6 Ne2-g3
Crafty v17.11
White(1): learn=0
book learning disabled
result learning disabled
position learning disabled
White(1): setboard 2r1rb1k/3q1ppb/p2p4/1pn1p3/4P1QB/1PP1R2P/P3NPB1/3R2K1 w - -
+---+---+---+---+---+---+---+---+
8 | | | *R| | *R| *B| | *K|
+---+---+---+---+---+---+---+---+
7 | | | | *Q| | *P| *P| *B|
+---+---+---+---+---+---+---+---+
6 | *P| | | *P| | | | |
+---+---+---+---+---+---+---+---+
5 | | *P| *N| | *P| | | |
+---+---+---+---+---+---+---+---+
4 | | | | | P | | Q | B |
+---+---+---+---+---+---+---+---+
3 | | P | P | | R | | | P |
+---+---+---+---+---+---+---+---+
2 | P | | | | N | P | B | |
+---+---+---+---+---+---+---+---+
1 | | | | R | | | K | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): analyze
clearing hash tables
time surplus 0.00 time limit 30.00 (3:00)
nss depth time score variation (1)
6-> 0.57 0.04 1. b4 Ne6 2. Rg3 Bg6 3. Bg5 Be7 <HT>
7 0.79 0.05 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 Qe6
7-> 1.23 0.05 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 Qe6
8 1.60 0.00 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 f5 5. exf5 Qxf5
8-> 3.59 0.00 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 f5 5. exf5 Qxf5
9 4.96 -0.04 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 Kg8 5. Qd5 Bg6
9-> 18.72 -0.04 1. b4 Ne6 2. Qh5 Nf4 3. Nxf4 exf4 4.
Red3 Kg8 5. Qd5 Bg6
10 24.25 -0.06 1. b4 Ne6 2. Qh5 Qc7 3. Rg3 Kg8 4.
Qf3 Qc4 5. a3 Bg6
10 48.18 -0.02 1. Qxd7 Nxd7 2. Bf3 f5 3. exf5 Bxf5
4. Bd5 Rc5 5. b4 Rc7 6. Nd4 Bg6
10-> 54.58 -0.02 1. Qxd7 Nxd7 2. Bf3 f5 3. exf5 Bxf5
4. Bd5 Rc5 5. b4 Rc7 6. Nd4 Bg6
11 1:02 -0.05 1. Qxd7 Nxd7 2. Bf3 f5 3. exf5 Bxf5
4. Bd5 Be6 5. Be4 Rc5 6. Bg6 Rec8 7.
Bg5
11-> 3:43 -0.05 1. Qxd7 Nxd7 2. Bf3 f5 3. exf5 Bxf5
4. Bd5 Be6 5. Be4 Rc5 6. Bg6 Rec8 7.
Bg5
12 4:09 -0.02 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Rc6
4. Ng3 Kg8 5. b4 Ne6 6. Rf3 Nf4 7.
Nf5
12-> 6:04 -0.02 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Rc6
4. Ng3 Kg8 5. b4 Ne6 6. Rf3 Nf4 7.
Nf5
13 6:57 -0.04 1. Qxd7 Nxd7 2. Bf3 Rc7 3. Bg4 f6 4.
Bh5 Rec8 5. Bg4 Be7 6. Bg3 Bg6 <HT>
13-> 13:49 -0.04 1. Qxd7 Nxd7 2. Bf3 Rc7 3. Bg4 f6 4.
Bh5 Rec8 5. Bg4 Be7 6. Bg3 Bg6 <HT>
14 15:47 -0.05 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Rc6
4. b4 Ne6 5. a4 Rc4 6. axb5 axb5 7.
Ng3 Nf4 8. Bd7 Rb8
14-> 29:26 -0.05 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Rc6
4. b4 Ne6 5. a4 Rc4 6. axb5 axb5 7.
Ng3 Nf4 8. Bd7 Rb8
15 34:12 -0.08 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Ne6
4. f3 Rc7 5. Red3 Bg6 6. Rd5 Rc6 7.
R1d2 Rec8 8. a3 R6c7
15-> 99:29 -0.08 1. Qxd7 Nxd7 2. Bf3 Nc5 3. Bg4 Ne6
4. f3 Rc7 5. Red3 Bg6 6. Rd5 Rc6 7.
R1d2 Rec8 8. a3 R6c7
16 132:07 -0.11 1. Qxd7 Nxd7 2. Bf3 Rc7 3. Bg4 f6 4.
Bh5 Rb8 5. Bg4 <HT>
16-> 311:51 -0.11 1. Qxd7 Nxd7 2. Bf3 Rc7 3. Bg4 f6 4.
Bh5 Rb8 5. Bg4 <HT>
White(1): exit
White(1): quit
execution complete.
These were the results Robert reported for the next 12 positions:
-------------------------------------------------------------------------------------------------
Posted by Robert Hyatt on July 26, 2000 at 17:48:36:
In Reply to: 12 new interesting positions !! posted by Côme on July 26, 2000 at
14:08:22:
On July 26, 2000 at 14:08:22, Côme wrote:
>
>Hello there are 12 new interesting positions for chess programs !!
>
>r1b2rk1/p6p/1p4q1/2pP1p2/2Q2B1p/5RbP/P1B3P1/1R4K1 w - - bm Rxg3!;
>8/5b2/1p1P1kp1/p2B2p1/2P5/8/P4PK1/8 b - - bm Bxd5!;
>2r5/p4p1p/1p4p1/nP1Pn3/Pkp1P3/4K3/3NB1PP/2R5 w - - bm Rb1!;
>3r2k1/1p3pb1/p3p2p/3rq1p1/b2NNPP1/2P3PQ/PP2R3/1K5R b - - bm Rxd4!;
>2q1r1k1/p4pp1/bp3b2/2rp3p/3Nn2P/1P4P1/PB2PPB1/1QRR2K1 b - - bm Qg4!;
>r4rk1/ppp2ppp/5b2/8/4P3/n7/PP2BPPP/R1B2RK1 w - - bm Bf4!;
>r1b2r2/p1q1n1kp/1pp3p1/3p1p2/2PP2PQ/2PBPN2/P6P/4RRK1 w - - bm e4!;
>5rk1/1r2qp1p/2p1b1p1/3pP1N1/p4B2/2P3Q1/Pn1R1PPP/4R1K1 w - - bm Nxh7!;
>kr6/3b3R/2nNp1p1/3pP3/p1pP1PP1/2P1Q3/q3B1K1/8 b - - bm a3!;
>r3r1k1/1p2Rbp1/2qn1p2/p2p3p/P2Q4/1BPP3P/2PB2P1/5RK1 w - - bm Rxf7!;
>r1b2rk1/ppqnnpbp/2p3p1/8/2P1p3/1PN2NP1/P1Q1PPBP/R1BR2K1 w - - bm Bf4!;
>r4rk1/1b1nbp1p/p3p1p1/qpn1P3/3N1P2/2P4R/P1B1Q1PP/RNB3K1 w - - bm f5!;
>
>Best Regards
>Alexandre Côme
r1b2rk1/p6p/1p4q1/2pP1p2/2Q2B1p/5RbP/P1B3P1/1R4K1 w - - acd 13; acn 286444353;
acs 302; bm Rxg3!; ce -21; pv Bxg3 hxg3 Qf4 Qf6 Rxg3+ Kh8 Re1 Bd7 Rge3 Rae8 Rxe8
Bxe8 d6 Qc3 Qf2 Bd7;
Never found the suggested best move. It likes Bxg3 instead... It finds
Bxg3 instantly.
8/5b2/1p1P1kp1/p2B2p1/2P5/8/P4PK1/8 b - - acd 20; acn 334348728; acs 302; bm
Bxd5!; ce 108; pv Bxd5+ cxd5 a4 Kf3 Kf7 Ke4 Ke8 f3 Kd7 Ke5 b5 Kd4 Kxd6 a3 b4
axb4 a3 Kc3 Kxd5 Kb3 g4 fxg4;
Above found after 10.4 seconds No change thru 5 minutes (I ran all of these
for 5 minutes on my quad xeon 550).
2r5/p4p1p/1p4p1/nP1Pn3/Pkp1P3/4K3/3NB1PP/2R5 w - - acd 14; acn 289602225; acs
302; bm Rb1!; ce -12; pv Kd4 Nb3+ Nxb3 cxb3 Rxc8 b2 Kxe5 b1=Q Bf3 Qb2+ Kf4 Kxa4
Rc7 Qf6+ Ke3 Kxb5 Rxa7 Kc5 Kd3;
Rb1 found instantly, but it changes to Kd4 after 18 seconds and sticks with
it. Scores are very close.
3r2k1/1p3pb1/p3p2p/3rq1p1/b2NNPP1/2P3PQ/PP2R3/1K5R b - - acd 12; acn 331408204;
acs 303; bm Rxd4!; ce 122; pv Rxd4;
Found after 10.5 seconds.
2q1r1k1/p4pp1/bp3b2/2rp3p/3Nn2P/1P4P1/PB2PPB1/1QRR2K1 b - - acd 12; acn
272219474; acs 300; bm Qg4!; ce 14; pv Qc7 b4 Rxc1 Rxc1 Qd6 b5 Qb4 bxa6 Bxd4
Bxe4 dxe4 Bxd4 Qxd4 Qc2;
Never likes the move Qg4. Not found after 5 minutes.
r4rk1/ppp2ppp/5b2/8/4P3/n7/PP2BPPP/R1B2RK1 w - - acd 15; acn 300717077; acs 302;
bm Bf4!; ce -5; pv Rd1 Rad8 Kf1 Rfe8 f3 Kf8 g3 c6 Bd3 Rd7 Be2 Rxd1+ Bxd1 Nc4 Rb1
Ke7 a3;
Not found after 5 minutes.
r1b2r2/p1q1n1kp/1pp3p1/3p1p2/2PP2PQ/2PBPN2/P6P/4RRK1 w - - acd 13; acn
261358949; acs 300; bm e4!; ce 36; pv cxd5 cxd5 c4 dxc4 Bxc4 Qxc4 Qxe7+ Qf7
Qxf7+ Kxf7 gxf5 gxf5 Kf2 Bb7 Rc1 Rac8 Ne5+ Ke6;
Not found. It likes cd.
5rk1/1r2qp1p/2p1b1p1/3pP1N1/p4B2/2P3Q1/Pn1R1PPP/4R1K1 w - - acd 16; acn
295495348; acs 300; bm Nxh7!; ce 231; pv Nxh7 Kxh7 Bg5 f6 exf6 Qf7 Rde2 Nc4 f3
Re8 Rxe6 Qxe6 Qh4+ Kg8 Rxe6 Rb1+ Re1 Rbxe1+ Kf2;
Found quickly, but it gets replaced. At 2:35 Nxh7 returns a +2.3 score and it
sticks with it from that point forward for 5 minutes.
kr6/3b3R/2nNp1p1/3pP3/p1pP1PP1/2P1Q3/q3B1K1/8 b - - acd 14; acn 282686251; acs
303; bm a3!; ce 212; pv a3 Nxc4 dxc4 Qf3 Rb2 Kf2 Kb8 f5 gxf5 gxf5 Rxe2+ Qxe2
Qxe2+ Kxe2 a2 fxe6 a1=Q exd7 Qxc3;
Found after 5.67 seconds
r3r1k1/1p2Rbp1/2qn1p2/p2p3p/P2Q4/1BPP3P/2PB2P1/5RK1 w - - acd 16; acn 286332433;
acs 301; bm Rxf7!; ce 45; pv Rxf7 Nxf7 Bxd5 Qc7 Rb1 Rad8 Rxb7 Qxb7 Bxb7 Rxd4
cxd4 Re2 Bxa5 Rxc2 Kh2;
Found after 3.69 seconds.
r1b2rk1/ppqnnpbp/2p3p1/8/2P1p3/1PN2NP1/P1Q1PPBP/R1BR2K1 w - - acd 14; acn
271172548; acs 301; bm Bf4!; ce 68; pv Bf4 Qa5 Nd4 Nf5 e3 Nxd4 exd4 f5 Rac1 Rd8
Ne2 Qb4 Bc7 Re8 Re1;
Found after 1:46...
r4rk1/1b1nbp1p/p3p1p1/qpn1P3/3N1P2/2P4R/P1B1Q1PP/RNB3K1 w - - acd 11; acn
263465741; acs 300; bm f5!; ce -16; pv f5;
f5 found at 4:14
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