Author: Dann Corbit
Date: 14:14:21 05/24/00
Go up one level in this thread
On May 24, 2000 at 16:06:47, Dann Corbit wrote:
>On May 24, 2000 at 14:44:13, Gian-Carlo Pascutto wrote:
>>On May 23, 2000 at 20:00:38, James Robertson wrote:
>>>>Comments on Insomniac's play? Looks quite remarkable. I don't believe the
>>>>account was restricting play to humans, which would explain such a jump.
>>>
>>>The account has played almost exclusively computers. I'm pretty happy with the
>>>results, and I hope that it is able to maintain or improve its rating. It has
>>>scored very well against several strong computer accounts, although it has
>>>trouble with some of the chess tiger clones.
>>
>>From the games I've got, I suspect Insomniac is very good tactically,
>>coupled with good king-safety.
>>
>>The following position is a nice example. Most amateur programs
>>can take a while to see the sac. Insomniac played it in less than 3 seconds.
>Unfortunately, while the flashy Bxh2+ has real flair and definitely nets a pawn
>in value, the pedantic, stodgy Qg4 puts you up by nearly a piece:
>
>[D] 4r1k1/1b3pp1/pp3n1p/1P2b3/3q4/2NBB3/P4PPP/1QR3K1 b - - acd 12; acn
>151375658; acs 1001; ce 288; pv Qg4 Ne4 Bxe4 Bxe4 Qxe4 bxa6 Qxb1 Rxb1 Bc7 Bd4
>Nd5 Rd1 Be5 a7 Bf4;
Crafty would pick Bxh2+ between 5 seconds and 29 seconds:
pondering disabled.
EGTB cache memory = 6M bytes.
hash table memory = 24M bytes.
pawn hash table memory = 8M bytes.
EGTB access enabled
using tbpath=e:/crafty/release/tb,F:/KBP
6 piece tablebase files found
1943kb of RAM used for TB indices and decompression tables
Crafty v17.10
White(1): st 999
search time set to 999.00.
White(1): epdpfga epd.epd epd.out
PFGA: EPD record: 1
middle-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
6-> 1.32 0.52 1. ... Qg4 2. Bf1 Ne4 3. Nxe4 Bxe4
4. f3 Bxf3 5. bxa6
7 3.34 0.73 1. ... Qg4 2. Bf1 Qh5 3. h3 Bxc3 4.
Rxc3 Nd5 5. Rd3 Nxe3 6. Rxe3 Rxe3 7.
fxe3
7 5.14 ++ 1. ... Bxh2+!!
7 6.38 1.31 1. ... Bxh2+ 2. Kxh2 Ng4+ 3. Kh1 Nxe3
4. fxe3 Rxe3 5. Bf5 Rxc3 6. Rxc3 Qxc3
7. bxa6
7-> 6.54 1.31 1. ... Bxh2+ 2. Kxh2 Ng4+ 3. Kh1 Nxe3
4. fxe3 Rxe3 5. Bf5 Rxc3 6. Rxc3 Qxc3
7. bxa6
8 17.05 1.39 1. ... Bxh2+ 2. Kxh2 Ng4+ 3. Kh3 Nxe3
4. Bh7+ Kf8 5. fxe3 Rxe3+ 6. g3 Rxc3
7. Rxc3 Qxc3 8. bxa6
8 29.44 ++ 1. ... Qg4!!
8 1:45 2.91 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Ng4 6. Bxb6 Bxh2+
7. Kf1
8-> 1:45 2.91 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Ng4 6. Bxb6 Bxh2+
7. Kf1
9 2:44 2.80 1. ... Qg4 2. f3 Bxf3 3. Bf1 Qh5 4.
h3 Bxc3 5. Rxc3 Nd5 6. Rc1 Nxe3 7.
gxf3 Nxf1 8. Rxf1 axb5
9-> 2:51 2.80 1. ... Qg4 2. f3 Bxf3 3. Bf1 Qh5 4.
h3 Bxc3 5. Rxc3 Nd5 6. Rc1 Nxe3 7.
gxf3 Nxf1 8. Rxf1 axb5
10 5:43 2.90 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Ng4 6. Bxb6 Bxh2+
7. Kh1 Bf4 8. f3
10-> 6:10 2.90 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Ng4 6. Bxb6 Bxh2+
7. Kh1 Bf4 8. f3
11 12:08 2.88 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Bc7 6. Bd4 Nd5
7. Rd1 Be5 8. a7 Bf4
11-> 14:10 2.88 1. ... Qg4 2. Ne4 Bxe4 3. Bxe4 Qxe4
4. bxa6 Qxb1 5. Rxb1 Bc7 6. Bd4 Nd5
7. Rd1 Be5 8. a7 Bf4
time=16:39 cpu=99% mat=0 n=151375658 fh=92% nps=151362
ext-> checks=8628038 recaps=412484 pawns=137259 1rep=880483
thrt:43152
predicted=0 nodes=151375658 evals=23545732
endgame tablebase-> probes done=0 successful=0
Amy chooses Bxh2+ a 9 seconds and discards it at 25 seconds, only to find it
again at 11 minutes, 17 seconds:
E:\programme\winboard\Amy>amy_07f
Amy version Winboard 0.7 (DC rev:0.5), Copyright (C) 2000 Thorsten Greiner
Amy comes with ABSOLUTELY NO WARRANTY; for details type 'warranty'
This is free software, and you are welcome to redistribute it
under certain conditions; type 'distribution'
No multiprocessor support.
$Id: score.c,v 1.44 2000/03/21 15:18:58 thorsten Exp $
$Id: search.c,v 1.57 2000/03/22 10:19:02 thorsten Exp $
Hashtable sizes: 16384 k, 8192 k, 8192 k
Found 4-men endgame table bases.
White(1): level 40/2400
Timecontrol is 40 moves in 2400 mins
White(1): test \epd.epd
Problem 1:
+---+---+---+---+---+---+---+---+
8 | | | | |*R*| |*K*| |
+---+---+---+---+---+---+---+---+
7 | |*B*| | | |*P*|*P*| | Hashkey: daf7730c
+---+---+---+---+---+---+---+---+
6 |*P*|*P*| | | |*N*| |*P*|
+---+---+---+---+---+---+---+---+
5 | | P | | |*B*| | | | Black (28000, 23000) PNBRQ
+---+---+---+---+---+---+---+---+
4 | | | |*Q*| | | | | White (28000, 23000) PNBRQ
+---+---+---+---+---+---+---+---+
3 | | | N | B | B | | | |
+---+---+---+---+---+---+---+---+
2 | P | | | | | P | P | P | Index: 63
+---+---+---+---+---+---+---+---+
1 | | Q | R | | | | K | | MateThreat: 0 0
+---+---+---+---+---+---+---+---+
a b c d e f g h
TC: 40 moves in 144000 secs
TL: 3150/12600
GamePhase: Middlegame
It Time Score principal Variation
6 1.1 +0.096 1. .. Qg4 2. Bf1 Ne4 3. f3 Nxc3 4. Rxc3
6 1.6 +0.096 1. .. Qg4 2. Bf1 Ne4 3. f3 Nxc3 4. Rxc3
7 2.8 +0.080 1. .. Qg4 2. Bf1 axb5 3. Qxb5 Bd4 4. Bxd4 Qxd4 5. Bc4
7 4.0 +0.080 1. .. Qg4 2. Bf1 axb5 3. Qxb5 Bd4 4. Bxd4 Qxd4 5. Bc4
8 6.1 +0.320 1. .. Qg4 2. Bf1 Qh5 3. h3 Bxc3 4. Rxc3 Nd5 5. Rd3
8 8.8 +++ 1. .. Bxh2+
8 11.9 +1.088 1. .. Bxh2+ 2. Kxh2 Ng4+ 3. Kh3 Nxe3 4. Bh7+ Kh8 5. fxe3
Rxe3+ 6. Kh2 Qe5+ 7. Kg1 Rxc3
8 12.9 +1.088 1. .. Bxh2+ 2. Kxh2 Ng4+ 3. Kh3 Nxe3 4. Bh7+ Kh8 5. fxe3
Rxe3+ 6. Kh2 Qe5+ 7. Kg1 Rxc3
9 20.4 +1.088 1. .. Bxh2+ 2. Kxh2 Ng4+ 3. Kh3 Nxe3 4. Bh7+ Kh8 5. fxe3
Rxe3+ 6. Kh2 Qe5+ 7. Kg1 Rxc3 8. Rxc3
9 25.2 +++ 1. .. Qg4
9 33.6 +1.824 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh4 4. h3 Bd4 5. Bxd4 Qxd4+
6. Kh1
9 35.6 +1.824 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh4 4. h3 Bd4 5. Bxd4 Qxd4+
6. Kh1
10 49.3 +++ 1. .. Qg4
10 1:02 +2.352 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh5 4. h3 Bxc3 5. Rxc3 Nd5 6.
Rd3
10 1:16 +2.352 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh5 4. h3 Bxc3 5. Rxc3 Nd5 6.
Rd3
11 2:16 +2.352 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh5 4. h3 Bxc3 5. Rxc3 Nd5 6.
Rd3 Nxe3
11 2:57 +2.352 1. .. Qg4 2. f3 Bxf3 3. Bf1 Qh5 4. h3 Bxc3 5. Rxc3 Nd5 6.
Rd3 Nxe3
12 6:19 +2.592 1. .. Qg4 2. f3 Bxf3 3. Qc2 Bxc3
12 11:17 +++ 1. .. Bxh2+
12 14:49 +4.048 1. .. Bxh2+ 2. Kxh2 Rxe3 3. fxe3 Qe5+ 4. Kh3 Qxe3+ 5. g3
Qf3 6. Nd5 Qxd5 7. Rc6 axb5
12 15:35 +4.048 1. .. Bxh2+ 2. Kxh2 Rxe3 3. fxe3 Qe5+ 4. Kh3 Qxe3+ 5. g3
Qf3 6. Nd5 Qxd5 7. Rc6 axb5
13 15:35 1/48 1. .. Bxh2+
Once again, Dusan Dobes shows us that he is a genius:
[ white, 1 ]
4r1k1/1b3pp1/pp3n1p/1P2b3/3q4/2NBB3/P4PPP/1QR3K1 b - -
4r1k1/1b3pp1/pp3n1p/1P2b3/3q4/2NBB3/P4PPP/1QR3K1 b - -
-> soft time limit 1714.28 s
-> hard time limit 31999.9 s
4 -> 0:00.75 27018 0 turns
5 54 94 35153 Qd4-g4 Bd3-f1 Qg4-h4 Ph2-h3
5 -> 0:02.31 86337 0 turns
6 27 321 128755 Qd4-g4 Bd3-f1 Qg4-h4 Ph2-h3 Pa6xb5 Qb1xb5
Re8-e6
6 32 362 147293 Be5xh2 !
6 87 413 170479 Be5xh2 !!
6 146 672 284835 Be5xh2 Kg1xh2 Nf6-g4 Kh2-h3 Ng4xe3
6 -> 0:08.15 354026 1 turn
7 206 1132 491688 Be5xh2 !!
7 256 2960 1304025 Be5xh2 Kg1xh2 Re8xe3 Pf2xe3
7 -> 0:36.73 1681106 0 turns
8 316 5075 2287377 Be5xh2 !!
8 387 11793 5374407 Be5xh2 Kg1-f1 Re8xe3 Pf2xe3 Qd4xe3 Nc3-e2
Nf6-g4 Bd3-h7 Kg8-h8 Qb1-f5 Qe3xc1 Ne2xc1
Ng4-e3 Kf1-e2 Ne3xf5 Bh7xf5 Pa6xb5
8 -> 2:13.31 6081022 0 turns
9 394 31699 14132932 Be5xh2 Kg1xh2 Re8xe3 Bd3-h7 Kg8-h8 Pf2xe3
Qd4-e5 Kh2-h3 Qe5xe3 Pg2-g3
Why is his eval ten times better than everyone else? He cleary finds the best
line in far fewer plies consistently.
I am awestruck by the eval of Phalanx.
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