Author: Dann Corbit
Date: 22:10:30 09/12/03
Go up one level in this thread
On September 12, 2003 at 20:05:45, Kim Roper Jensen wrote:
>From one of the great Kings Indian players.
>
>[D]q5k1/3n1pb1/6p1/2PQ4/2n5/1PN2P2/2K1N1P1/r1BR3R b - -
>
>Move to find is 1...Rxc1+ with a positive score, seems hard for Shredder 6
>Paderborn Classic on 2Ghz AMD with 128MB hashtables
>
> 1.00 0:00 -7.70-- 1...Qxd5 2.Nxd5 (4) 0.4
> 1.00 0:00 -8.29-- 1...Qxd5 2.Nxd5 (7) 0.7
> 1.00 0:00 -9.02 1...Qxd5 2.Rxd5 (12) 0.6
> 1.00 0:00 -8.95++ 1...Qa5 2.Qxc4 Nxc5 (55) 2.7
> 1.00 0:00 -8.95 1...Qa5 2.Qxc4 Nxc5 (63) 3.1
> 1.00 0:00 -8.57++ 1...Ra2+ 2.Nxa2 Qxa2+ 3.Bb2 Nxb2 (160) 5.3
> 1.00 0:00 -8.55 1...Ra2+ 2.Nxa2 Qxa2+ 3.Kd3 Qxb3+ 4.Ke4 (182) 6.0
> 2.00 0:00 -8.55 1...Ra2+ 2.Nxa2 Qxa2+ 3.Kd3 Qxb3+ 4.Ke4 (592) 19.7
> 2.00 0:00 -8.24++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb2 Nxd1+ 4.Qxd1 (811) 20.2
> 2.00 0:00 -7.71++ 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kb1 Qxb3+ 4.Ka1 Bxc3+ 5.Nxc3 Qxc3+
>6.Ka2 (837) 20.9
> 2.00 0:00 -6.49 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kb1 Nxd5 5.Nxd5 (1.094)
>27.3
> 3.00 0:00 -6.24++ 1...Rxc1+ 2.Kd3 Qxd5+ 3.Nxd5 (1.357) 27.1
> 3.00 0:00 -5.74++ 1...Rxc1+ 2.Kd3 Qxd5+ 3.Nd4 Bxd4 (1.413) 28.2
> 3.00 0:00 -2.66 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 (3.497) 58.2
> 4.00 0:00 -2.66 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 (5.877) 97.9
> 5.00 0:00 -2.41++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qc6 5.Rd2 (14.870)
>185.8
> 5.00 0:00 -1.91++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qc6 5.b4 Bxc3
>(17.726) 196.9
> 5.00 0:00 -1.46 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kd2 Nxd5 5.Nxd5 Qxb3
>6.Ne7+ Kf8 (26.670) 242.4
> 6.00 0:00 -1.31 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kd2 Nxd5 5.Nxd5 Qxb3
>6.Ne7+ Kf8 7.Rb1 Nxc5 8.Rxb3 Nxb3+ 9.Ke3 Kxe7 (46.073) 287.9
> 7.01 0:00 -1.56-- 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qa3 5.c6 (91.266)
>365.0
> 7.01 0:00 -1.81 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qc6 5.Rhd1 Nxc5
>6.Rd8+ Bf8 (119.386) 385.1
> 8.01 0:00 -1.67 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qc6 5.Rhd1 Nxc5
>6.Rd8+ Kh7 7.Kc2 (257.374) 436.2
> 9.01 0:01 -1.69 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Qc6 5.Rhd1 Nxc5
>6.Rd8+ Kh7 7.R1d6 Qb7 (491.863) 463.5
> 10.01 0:03 -1.50 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Bxc3 5.Rxd7 Qa1+
>6.Kc2 Qb2+ 7.Kd3 Qd2+ 8.Kc4 Qxd7 9.Kxc3 Qb5 10.b4 (1.471.654) 485.0
> 11.01 0:07 -1.36 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Bxc3 5.Rxd7 Qa1+
>6.Kc2 Qb2+ 7.Kd3 Qxg2 8.Rd1 Qxf3+ (3.520.643) 483.6
> 12.01 0:12 -1.11++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Bxc3 5.Rxd7 Qa1+
>6.Kc2 Qb2+ 7.Kd3 Qxg2 8.Rd1 Qxf3+ (6.098.077) 476.1
> 12.01 0:15 -1.05 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Bxc3 5.Rxd7 Qa1+
>6.Kc2 Qb2+ 7.Kd3 Qxg2 8.Rd1 Qxf3+ (7.298.168) 482.9
> 13.01 0:47 -0.80++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Rxd5 Bxc3 5.Rxd7 Qa1+
>6.Kc2 Qb2+ 7.Kd3 Qxg2 8.Rd1 Qxf3+ (23.103.684) 488.1
> 13.01 1:03 -0.36 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Nxd5 Qa1+ 5.Kc2 Qb2+
>6.Kd3 Nxc5+ 7.Ke3 Nxb3 8.Ne2 Bf8 9.Ndc3 Bc5+ 10.Kf4 Kg7 11.Ke5 (30.644.448)
>483.8
> 14.01 3:00 -0.11++ 1...Rxc1+ 2.Nxc1 Ne3+ 3.Kb1 Nxd5 4.Nxd5 Qa1+ 5.Kc2 Nxc5
>6.Rd2 Ne6 7.Kd1 Bb2 8.Rc2 Bxc1 9.Ke2 Qd4 (87.144.094) 483.3
> 14.01 4:34 -0.07 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kd2 Nxd5 5.Nxd5 Qxb3
>6.Ke1 Nxc5 7.Ndf4 g5 8.Rd8+ Bf8 9.Nh5 Qb6 10.Rd1 f5 (133.924.144) 487.9
> 15.01 7:48 0.00 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kd2 Nxd5 5.Nxd5 Qxb3
>6.Ke1 Nxc5 7.Nc1 Qb2 8.Ne2 Qb3 9.Nc1 Qb2 10.Ne2 Qb3 11.Nc1 (228.976.801) 488.9
> 16.01 20:09 +0.04 1...Rxc1+ 2.Kxc1 Qa3+ 3.Kc2 Ne3+ 4.Kd2 Nxd5 5.Nxd5 Qxb3
>6.Ke1 Nxc5 7.Nc1 Qc4 8.Ne3 Bc3+ 9.Kf2 Bd4 10.Rd2 Qc3 11.Re2 (584.845.316) 483.5
>best move: Ra1xc1 time: 20:33.223 min n/s: 485.944 CPU 97.6% nodes:
>599.277.389
[Event "8687"]
[Site "Hastings ENG"]
[Date "1986.??.??"]
[Round "?"]
[White "Petursson, Margeir"]
[Black "Gufeld, Eduard E"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2480"]
[ECO "E83c"]
[EventDate "1986.12.??"]
[Variation "King's Indian: Sämisch, 6...Nc6 7.Qd2 a6 8.O-O-O"]
[PlyCount "115"]
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Qd2 a6 8.O-O-O b5
9.cxb5 axb5 10.Bxb5 Na5 11.Kb1 Ba6 12.Bxa6 Rxa6 13.Qd3 Qa8 14.Nge2 Rb8 15.
Bc1 e6 16.h4 d5 17.h5 Nc4 18.hxg6 hxg6 19.b3 c5 20.dxc5 Nd7 21.exd5 exd5
22.Qxd5 Rxb3+ 23.axb3 Ra1+ 24.Kc2
{
q5k1/3n1pb1/6p1/2PQ4/2n5/1PN2P2/2K1N1P1/r1BR3R b - -
}
24 .. Rxc1+ 25.Nxc1 Ne3+ 26.Kb1 Nxd5 27.Rxd5
Bxc3 28.Rxd7 Qa3 29.Kc2 Qxc5 30.Rhd1 Bf6+ 31.Kb1 Qc3 32.R7d2 Qa1+ 33.Kc2
Kg7 34.f4 Qb2+ 35.Kd3 Qd4+ 36.Kc2 Qb2+ 37.Kd3 Qd4+ 38.Kc2 Qxf4 39.Kb1 Qg4
40.Rf1 Qe4+ 41.Rc2 g5 42.Rf3 g4 43.Rd3 Qe5 44.Ra2 Bg5 45.Rc2 Bf6 46.Ra2
Bg5 47.Rc2 Bf6 48.Ra2 Bg5 49.Rc2 Qf5 50.Rdc3 Qf1 51.g3 Bf6 52.Rc4 Qf3 53.
Rf4 Qxg3 54.Rcc4 Qh2 55.Rxg4+ Kh6 56.Rc2 Qe5 57.Ra4 Bg5 58.Rac4 1/2-1/2
Ruffian thinks the position is drawish:
E:\programme\winboard\ruffian>ruffian -h 256M -T \rxc1.epd -t 999 -p 99
Hash size 268435456
Ruffian 1.0.1
feature done=0
Loading configuration: ruffian.cfg
Warning: EGTB_HASH_SIZE changed, default=1048576, newvalue=8388608
Logfile: Fri Sep 12 21:45:59 2003
Total hash size 256M
Initializing tablebases: /programme/winboard/nalimov
Testing \rxc1.epd, 999 seconds, extra ply 99
Testing: Solution: Rxc1+
q5k1/3n1pb1/6p1/2PQ4/2n5/1PN2P2/2K1N1P1/r1BR3R b - -
Depth Time Score Best line
8--> 1.14 -1.69 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd1 Qxg2
9/23 1.33 ++ ... Rxc1+
9/23 1.69 -1.28 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Kxc3 Qxh1
9--> 2.81 -1.28 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Kxc3 Qxh1
10/25 3.23 ++ ... Rxc1+
10/26 4.08 -0.33 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rh2 Qxf3+ Kc4
10--> 6.63 -0.33 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rh2 Qxf3+ Kc4
11/32 13.60 -0.10 ... Rxc1+ Kxc1 Qa3+ Kc2 Ne3+ Kd2 Nxd5 Nxd5 Qxb3 Ke1
Nxc5 Nef4 Qc2 Ne7+ Kf8 Rh7
11--> 20.40 -0.10 ... Rxc1+ Kxc1 Qa3+ Kc2 Ne3+ Kd2 Nxd5 Nxd5 Qxb3 Ke1
Nxc5 Nef4 Qc2 Ne7+ Kf8 Rh7
12/34 30.29 -0.35 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rd8+ Kg7 Rdh8 Bb2 Na2 Qxf3+ Kc4
12--> 1:26 -0.35 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rd8+ Kg7 Rdh8 Bb2 Na2 Qxf3+ Kc4
13/36 1:37 -0.48 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rd8+ Kg7 Rdh8 Qxf3+ Kc4 Qe3 R8h7+
Kf8 b4
13--> 6:05 -0.48 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rd8+ Kg7 Rdh8 Qxf3+ Kc4 Qe3 R8h7+
Kf8 b4
14/40 7:34 -0.38 ... Rxc1+ Kxc1 Qa3+ Kc2 Ne3+ Kd2 Nxd5 Nxd5 Qxb3 Ke1
Nxc5 Ndf4 g5 Rd8+ Bf8 Rh5 gxf4 Rg5+ Kh7 Rxf8
14--> 12:49 -0.38 ... Rxc1+ Kxc1 Qa3+ Kc2 Ne3+ Kd2 Nxd5 Nxd5 Qxb3 Ke1
Nxc5 Ndf4 g5 Rd8+ Bf8 Rh5 gxf4 Rg5+ Kh7 Rxf8
15/42 14:14 -0.08 ... Rxc1+ Nxc1 Ne3+ Kb1 Nxd5 Rxd5 Bxc3 Rxd7 Qa1+
Kc2 Qb2+ Kd3 Qxg2 Rd1 Qxf3+ Kc4 Bb2 Kb5 Qc3 R7d3
Qc2
15... 14:14 2/45 Ra2+
Time: 16:39, cpu 85.87%, nodes 580024108, nps 580575
Hash: 128M, used 100%, hits 23%
EGTB: probs 0, hits 0
Best move: Rxc1+ (-0.08) Solved (1/1)
Summery: 1/1
Crafty MPC agrees:
E:\programme\winboard\Crafty>crafty-mpc
EPD Kit revision date: 1996.04.21
found computer opening book file [./bookc.bin].
MPC thresholds: 1.000000 1.000000
hash table memory = 24M bytes.
pawn hash table memory = 6M bytes.
EGTB cache memory = 2M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables
Crafty vMPC_all
White(1): hash 300M
hash table memory = 192M bytes.
White(1): st 999
search time set to 999.00.
White(1): epdpfga \rxc1.epd rxc1.out
PFGA: EPD record: 1 ID: Petursson/Gufeld, Hastings ENG, 1986
middle-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
6 0.23 ++ 1. ... Rxc1+!!
6 0.33 0.70 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
6-> 0.44 0.70 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7 0.52 0.70 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7-> 0.56 0.70 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
8 0.62 0.74 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rxd7 Qxd7 6. Kc2
8-> 0.70 0.74 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rxd7 Qxd7 6. Kc2
9 0.79 0.64 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rh6 Qxf3+
9-> 0.87 0.64 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rh6 Qxf3+
10 1.02 0.67 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Qf5+
7. Rd3 Bxc3
10-> 1.09 0.67 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Qf5+
7. Rd3 Bxc3
11 1.28 0.59 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rd1 Qxf3+ 9. Kc4 Qe3
11-> 1.39 0.59 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rd1 Qxf3+ 9. Kc4 Qe3
12 1.79 0.83 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7. Kc2 Bd4+ 8. Kd1 Kg7
12-> 3.43 0.83 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7. Kc2 Bd4+ 8. Kd1 Kg7
13 3.97 0.75 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 <HT>
13-> 7.03 0.75 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 <HT>
14 8.58 0.68 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7. Nd3 Qc8 8. Rd5 Qc6 9. Nf4
14-> 17.96 0.68 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Qc6 5. Rd6 Qxc5 6. Rxd7 Bxc3
7. Nd3 Qc8 8. Rd5 Qc6 9. Nf4
15 27.73 0.47 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 <HT>
15-> 50.14 0.47 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 <HT>
16 57.31 ++ 1. ... Rxc1+!!
16 3:45 0.00 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rd1 Qxf3+ 9. Kc4 Bb2
10. Na2 Qf4+ 11. Kb5 Qb8+ 12. Kc4 Qf4+
16-> 4:43 0.00 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rd1 Qxf3+ 9. Kc4 Bb2
10. Na2 Qf4+ 11. Kb5 Qb8+ 12. Kc4 Qf4+
17 5:14 0.00 1. ... Rxc1+ 2. Nxc1 Ne3+ 3. Kb1 Nxd5
4. Rxd5 Bxc3 5. Rxd7 Qa1+ 6. Kc2 Qb2+
7. Kd3 Qxg2 8. Rd1 Qxf3+ 9. Kc4 Bb2
10. Na2 Qf4+ 11. Kb5 Qb8+ 12. Kc4 Qf4+
17 6:15 2/45* 1. ... Ra2+
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