testposition

Spliffjiffer · Post by **Spliffjiffer** » Mon Apr 28, 2014 7:03 pm

While Vincent is looking for the testposition of the month here is my little last minute contribution

The position is from Carlsen vs L'Ami in 2006
[D]2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1
bm Bxf7

1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2! and a technical winning position

i would suppose SF should be fastest here but lets see you will find

kgburcham · Post by **kgburcham** » Mon Apr 28, 2014 7:30 pm

good test position Peer.
I will try with Stockfish later.
kgburcham

[D] 2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1

Houdini 4 Pro x64:

1.Rc1 Rxc1 2.Rxc1 Qd8 3.Bxf7 Ne5 4.Be6 Nxg4
+/- (1.04) Depth: 21/62 00:00:32 610mN
1.Bxf7
+- (1.79 ++) Depth: 21/67 00:01:43 2051mN
1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2 Ke7
+- (1.60) Depth: 21/69 00:01:47 2130mN
1.Bxf7
+- (1.72 ++) Depth: 22/69 00:01:52 2224mN
1.Bxf7
+- (1.95 ++) Depth: 22/69 00:02:18 2727mN
1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2 Ke7 5.e5 Bxe5+ 6.Nxe5 Nxe5
+- (1.91) Depth: 22/69 00:02:21 2794mN
1.Bxf7
+- (2.03 ++) Depth: 23/69 00:02:54 3441mN

tttony · Post by **tttony** » Mon Apr 28, 2014 9:16 pm

Stockfish found the move in: 3min 12sec

FEN: 2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1

Code: Select all

Stockfish 280414 64 SSE4.2&#58;
....
 32/53-	01&#58;49	 733.513.498	6.733.929	+1,05	Re1-e3 Nd7-e5 Ng4xf6 Kg7xf6 f2-f4 Ne5-c4 Bd5xc4 Rc8xc4
 32/58+	02&#58;27	1.010.900.224	6.837.984	+1,17	Re1-e3 Nd7-e5 Ng4xf6
 32/61+	03&#58;12	1.315.631.098	6.838.816	+1,26	Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 Nd7xe5 Re1xe5+ d6xe5 Qf5xe5+ Ke7-f7 Qe5-f5+ Kf7-e8
 32/61+	03&#58;18	1.362.027.023	6.854.863	+1,40	Bd5xf7
 32/61+	03&#58;32	1.466.240.039	6.891.326	+1,61	Bd5xf7 Rc8-f8 Bf7xg6 Kg7xg6 Qd2xd6 Qb6xd6 Rd1xd6 Rh8-h7 e4-e5 Rh7-e7 Rd6xa6 b4-b3 a2xb3 Kg6-h7 f2-f4 Bf6-g7

yanquis1972 · Post by **yanquis1972** » Mon Apr 28, 2014 9:19 pm

gull 3 failed to find the move in 20 mins

komodo just made the cut --

Engine: Komodo TCECr 64-bit (4096 MB)
by Don Dailey, Larry Kaufman, Mark Lefler

17.00 0:03 +0.69 1.Rc1 Rxc1 2.Rxc1 Qb8 3.Bb3 Be7 4.Qd5 Rf8 5.Rc6 Nc5 6.Bc4 Ne6 7.Qd2 Bg5 8.Qxd6 Qxd6 9.Rxd6 Nf4+ 10.Kh2 Rc8 11.Bxa6 Rc2 12.Rd7 Bh4 (19.599.445) 5687
18.01 0:05 +0.75 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Bb3 a5 5.Qd5 Rf8 6.Rd1 Be7 7.Qxa5 f5 8.exf5 Rxf5 9.Qa6 Nc5 10.Qc6 Nxb3 11.axb3 Qf8 12.Qe4 Rf4 13.Qe6 Qf7 14.Qe3 (33.315.574) 5737
19.01 0:07 +0.76 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Bb3 a5 5.Qf4 Rh5 6.Rc6 Qe8 7.Rxd6 Bxb2 8.Qxf7+ Qxf7 9.Bxf7 Kxf7 10.Rxd7+ Ke6 11.Ra7 Rc5 12.Ra6+ Kf7 13.f4 Rc2+ 14.Kf3 (40.911.845) 5772
20.01 0:10 +0.76 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Bb3 a5 5.Qd5 Rf8 6.Rd1 Be7 7.Qxa5 f5 8.exf5 Rxf5 9.Qa6 Ne5 10.Nxe5 Rxe5 11.Qc4 Qa8+ 12.f3 Qf8 13.h4 Bf6 14.Rd2 (59.055.548) 5820
21.01 0:13 +0.75 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Bb3 a5 5.Qd5 Rf8 6.Rd1 Be7 7.Qxa5 f5 8.exf5 Nc5 9.Bd5 Rxf5 10.Qa8 Qxa8 11.Bxa8 Ne6 12.Kg3 Nf4 13.Be4 Nh5+ 14.Kh2 (77.137.101) 5817
22.01 0:23 +0.75 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Bb3 a5 5.Qd5 Rf8 6.Rd1 Be7 7.Qxa5 Nf6 8.Qg5 Rh8 9.Rd4 Qb7 10.Qf4 Qb6 11.Qd2 Nxg4 12.hxg4 Qc5 13.Rxb4 Rh4 14.Qd4+ (137.498.969) 5842
23.01 0:40 +0.91++ 1.Rc1 (235.625.428) 5856
23.01 0:48 +0.90-- 1.Rc1 Rcf8 (285.394.230) 5865
24.01 1:30 +0.99 1.Rc1 Qb8 2.Rxc8 Qxc8 3.Rc1 Qb8 4.Rc2 Qd8 5.Qxb4 Be5 6.Qb3 Nf6 7.Nxe5 dxe5 8.Bxf7 Nh5 9.Kh2 Nf4 10.Be6 Qd4 11.Rc7+ Kh6 12.Qg3 Rf8 13.Bf7 Qb6 14.Rd7 (536.376.761) 5933
25.01 2:38 +0.98 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Ne5 5.Rxd6 Nxg4 6.hxg4 Rh4 7.Kf3 Rh3+ 8.Ke2 a5 9.Ra6 Bg5 10.Rc2 Bh4 11.Kf1 Bd8 12.Kg2 Rh4 13.Kg3 Rh1 14.Rd6 (953.640.746) 6013
26.01 3:14 +0.98 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Ne5 5.Rxd6 Nxg4 6.hxg4 Rh4 7.Kf3 Rh3+ 8.Ke2 a5 9.Ra6 Bg5 10.Rc2 Bh4 11.Kf1 Bd8 12.Kg2 Rh4 13.Kg3 Rh1 14.Rd6 (1.165.399.972) 6001
27.01 3:51 +0.98 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Ne5 5.Rxd6 Nxg4 6.hxg4 Rh4 7.Kf3 Rh3+ 8.Ke2 a5 9.Ra6 Bg5 10.Rc2 Bh4 11.Kf1 Bd8 12.Kg2 Rh4 13.Kg3 Rh1 14.Rd6 (1.396.521.289) 6020
28.01 4:45 +0.98 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Ne5 5.Rxd6 Nxg4 6.hxg4 Rh4 7.Kf3 Rh3+ 8.Ke2 a5 9.Ra6 Bg5 10.Rc2 Bh4 11.Kf1 Bd8 12.Kg2 Rh4 13.Kg3 Rh1 14.Rd6 (1.729.517.070) 6068
29.01 6:48 +0.98 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Ne5 5.Rxd6 Nxg4 6.hxg4 Rh4 7.Kf3 Rh3+ 8.Ke2 a5 9.Ra6 Bg5 10.Rc2 Bh4 11.Kf1 Bd8 12.Kg2 Rh4 13.Kg3 Rh1 14.Rd6 (2.486.945.724) 6095
30.01 13:37 +1.03 1.Rc1 Rcf8 2.Rc6 Qd4 3.Re2 Qxd2 4.Rxd2 Bg5 5.Rd4 Nc5 6.Rxd6 Rd8 7.Rxd8 Rxd8 8.Rxb4 Nd3 9.Rb6 Nf4+ 10.Kg3 Rh8 11.Ne3 Rxh3+ 12.Kg4 Rh5 13.Rxa6 f6 14.Nf1 (5.030.010.133) 6153
30.05 18:56 +1.14++ 1.Bxf7 (7.122.778.581) 6264

acase · Post by **acase** » Tue Apr 29, 2014 12:32 am

A little over 8 minutes for Spark-1.0-win64-mp-corei on my quad Phenom II 955 :

New game
2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1

Analysis by spark-1.0-win64-mp-corei:

1.Bxf7 Kxf7
+/- (1.59 ++) Depth: 22/58 00:08:06 4207MN
1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2 Ke7 5.e5 Bxe5+ 6.Nxe5 Nxe5 7.Rxe5+ dxe5 8.Qxe5+ Kf7 9.Qf5+ Ke8 10.Re1+ Kd8 11.Qxg5+ Kc7 12.Rc1 Rhf8 13.Qg7+ Kb6 14.Qd4+ Kb5 15.Rxc6 Rxc6 16.h4 Rcf6 17.Kg2 Rg6+ 18.Kh3 Rf3+ 19.Kh2
+/- (1.53) Depth: 22/58 00:08:08 4224MN

(Van, 28.04.2014)

acase · Post by **acase** » Tue Apr 29, 2014 1:38 am

here's Critter, 4 minutes 36 seconds on the same system.

New game
2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1

Analysis by Critter 1.6a 64-bit:

1.Bxf7 Kxf7 2.Qxd6 Qxd6 3.Rxd6 Ke7
+/- (1.14 ++) Depth: 22/55 00:04:36 1733MN
1.Bxf7 Kxf7 2.Qxd6 Qxd6 3.Rxd6 Ke7
+/- (1.27 ++) Depth: 22/56 00:06:32 2454MN
1.Bxf7 Kxf7 2.Qxd6 Qxd6 3.Rxd6 Ke7
+/- (1.46 ++) Depth: 22/56 00:09:57 3719MN
1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2 Ke7 5.e5 Bxe5+ 6.Nxe5 Nxe5 7.Rxe5+ dxe5 8.Qxe5+ Qe6 9.Qg7+ Ke8 10.Qxh8+ Kf7 11.Qh5+ Kf6 12.Qh6+ Kf5 13.Qh7+ Kf6 14.Rd7 Re8 15.Qg7+ Kf5 16.Rf7+ Ke4 17.Rf6 Qe7 18.Qg6+ Kd4 19.Rf3
+/- (1.51) Depth: 22/58 00:13:33 5041MN

(Van, 28.04.2014)

Eelco de Groot · Post by **Eelco de Groot** » Sat May 03, 2014 1:40 am

Spliffjiffer wrote:While Vincent is looking for the testposition of the month here is my little last minute contribution

The position is from Carlsen vs L'Ami in 2006
[D]2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1
bm Bxf7

1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2! and a technical winning position

i would suppose SF should be fastest here but lets see you will find

The position is not easy for Rainbow Serpent, only at high depths will it play Bxf7. It likes Re3, maybe too much, and is not looking deep enough at Bxf7 to find a win. But I think Stockfish also technically may not be evaluating this right, if it does not find a winning continuation. It may find the right move for the wrong reasons. I have not actually checked it with Stockfish and the latest version may evaluate this much better, but in the 'critical variation' there is for instance the following 'problematic' position.

[FEN "2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - -"]

1. Bxf7 Kxf7 2. Qf4 g5 3. Qf5 Qc6 4. Kh2 Ke7 5. e5 Bxe5+
6. Nxe5 Nxe5 7. Rxe5+ dxe5 8. Qxe5+ Kf7 9. Qf5+ Ke8
10. Re1+ Kd8 11. Qxg5+ Kc7 12. Rc1 Rhf8 13. Qe7+ Kb6
14. Rxc6+ *

This is not the only possible continuation but other variatons would lead to a similar position. (For instance a line with 12... Qxc1 is possible) But at the end of this line here I think that also Stockfish for a while will gobble up the b-pawn in exchange for a passed(!) pawn on f2. I think this is a relative blunder and seems to give away a half point. Keeping the f pawn on the board is critical, well I have not looked very very deeply at 15. Qxb4 but it seems wrong, and, more convincing perhaps, the score is not going up anymore until the engine sees that a check defending the f-pawn is better.

[D]2r2r2/4Q3/pkR5/8/1p6/7P/PP3P1K/8 b - -

Engine: Rainbow Serpent 20140417_014 MP (512 MB)
by Tord Romstad, Marco Costalba and Joona Kiiski

12/21 0:00 -1.20 14...Kxc6 15.Qxb4 {I think this move is wrong} Rxf2+ 16.Kg3 Rff8
17.Qc3+ Kb5 18.Qe5+ Kb6 19.Qd6+ Kb5
20.Qd5+ Kb6 21.Qd6+ (130.365) 238

13/23 0:00 -1.22 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.Qa4+ Kd5 18.h4 Rg8+ 19.Kh3 Rb8
20.b3 (314.236) 355

14/23 0:02 -1.27 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.Qc3+ Kb5 18.Qd3+ Kb6 19.Qd4+ Kb5
20.Qd5+ Kb6 21.h4 Rg8+ 22.Kh3 Rge8
23.h5 (778.540) 381

15/24 0:02 -1.53 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rc2
17.h4 Kd5 18.h5 R8c6 19.Qf4 (1.558.639) 565

16/24 0:03 -1.60-- 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rc2
17.h4 Kd5 18.h5 R8c6 19.Qf4 a5 20.h6 Rc7
21.Qf5+ Kd6 22.h7 (1.981.761) 641

16/25 0:03 -1.64 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rc2
17.h4 Rc5 18.Qe4+ Kc7 19.Qe6 Rc6
20.Qe7+ Kb6 21.h5 Rg8+ 22.Kf4 Rg2
23.Qe4 Rh2 (2.370.267) 627

17/25 0:06 -1.66 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rcf8
17.Qe4+ Kc7 18.h4 R2f6 19.h5 Kd6
20.b3 R8f7 21.Qd4+ Ke6 22.Qe3+ Kd6
23.Qd3+ Ke7 24.Qc4 Rf8 25.Qd5 (3.153.238) 468

18/25 0:08 -1.66 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rcf8
17.Qc4+ Kb7 18.Qd5+ Kb8 19.h4 R2f5
20.Qd6+ Kb7 21.h5 R8f6 22.Qe7+ Kb6
23.Qe3+ Kb7 24.h6 (3.669.532) 431

19/29 0:13 -1.67 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.h4 Kd5 18.Qd2+ Kc6 19.Qc3+ Kb5
20.Qd3+ Ka5 21.Qd2+ Kb5 22.h5 Rg8+
23.Kh4 (6.121.952) 465

20/30 0:15 -1.74-- 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.h4 Kd5 18.Qd2+ Kc6 19.Qc3+ Kb5
20.Qd3+ Ka5 21.Qd2+ Kb5 22.h5 Rg8+
23.Kh4 (7.456.842) 484

20/31 0:17 -1.78 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.h4 Rg8+ 18.Kh3 Rgd8 19.Qe4+ Kc7
20.Qe5+ Kb6 21.Qe3+ Kb7 22.h5 Rd6
23.Qf3+ Kc7 24.Qe3 Rcd8 25.Qa7+ Kc8
26.Kg4 Rd4+ 27.Kf3 Rd3+ (9.160.799) 514

21/31 0:18 -1.72++ 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.h4 Rg8+ 18.Kh3 Rgd8 19.Qe4+ Kc7
20.h5 Rd6 21.Qf4 Kc6 22.Kg4 Rg8+
23.Kf3 Rh8 24.Qc4+ Kd7 25.Qf7+ Kc6
26.b4 (9.794.002) 517

21/33 0:19 -1.67 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.h4 Rg8+ 18.Kh3 Rgd8 19.Qe4+ Kc7
20.h5 Rd6 21.Qf4 Kc6 22.Kg4 Rg8+
23.Kf3 Rh8 24.Qc4+ Kd7 25.Kg4 Rd2
26.Qf7+ Kc6 27.Qf6+ (10.959.929) 553
.
.
.
.

30/50 4:12 -1.72 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.Qc4+ Kb7 18.Qb3+ Ka7 19.h4 Rg8+
20.Kh3 Rgd8 21.Qe3+ Kb7 22.h5 Rc6
23.Qe4 Kb6 24.Kg3 Rg8+ 25.Kh4 Rd8
26.Kg5 Rg8+ 27.Kh4 (270.559.309) 1069

31/50 4:39 -1.72 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.Qc4+ Kb7 18.Qb3+ Ka7 19.h4 Rg8+
20.Kh3 Rgd8 21.Qe3+ Kb7 22.h5 Rc6
23.Qe4 Kb6 24.Kg3 Rg8+ 25.Kh4 Rd8
26.Kg5 Rg8+ 27.Kh4 (303.518.185) 1086

32/50 6:03 -1.72 14...Kxc6 15.Qxb4 Rxf2+ 16.Kg3 Rff8
17.Qc4+ Kb7 18.Qb3+ Ka7 19.Qe3+ Kb7
20.Qe4+ Kb6 21.Qe3+ Kb7 (410.099.998) 1127

33/50 10:21 -1.78-- 14...Kxc6 15.Qe6+ {!} Kc5 16.f4 Rce8
17.Qxa6 Re4 18.Qa5+ Kc6 19.f5 Rf4
20.Kg3 R8xf5 21.Qa6+ Kc5 22.Qa7+ Kd5
23.Qb7+ Ke6 24.Qc6+ Ke5 25.Qc5+ Kf6
26.Qd6+ Kg5 27.Qd2 (814.050.212) 1309

33/53 12:43 -1.84-- 14...Kxc6 15.Qe6+ Kc5 16.f4 Rce8
17.Qxa6 Re4 18.Qa5+ Kc6 19.f5 Re2+
20.Kg3 Rg8+ 21.Kf3 Rxb2 22.Qa4+ Kc5
23.f6 Rh2 24.Qa5+ (1.001.322.377) 1310

33/55 16:15 -1.82 14...Kxc6 15.Qe6+ Kc5 16.f4 Rce8
17.Qxa6 Re4 18.Qa5+ Kc6 19.f5 Rf4
20.Kg3 R4xf5 21.Qxb4 Rg8+ 22.Kh4 Rd8
23.Qc4+ Rc5 24.Qe4+ Rcd5 25.a4 Kc5
26.b4+ Kb6 27.Qe3+ Kb7 (1.290.870.697) 1323

34/55 27:23 -1.89-- 14...Kxc6 15.Qe6+ Kc5 16.Qe3+ (2.569.872.725) 1563

34/55 33:25 -1.95-- 14...Kxc6 15.Qe6+ Kc5 16.Qe3+ Kb5
17.f4 Rc5 18.h4 Rc2+ 19.Kg3 Rg8+
20.Kf3 Rgg2 21.f5 Rh2 22.Qe5+ Kc6
23.Qe6+ Kb5 24.f6 (3.268.037.551) 1629

34/55 39:14 -2.04-- 14...Kxc6 15.Qe6+ Kc5 16.Qe3+ (3.939.387.293) 1673

34/59 67:19 -2.09 14...Kxc6 15.Qe6+ Kc5 16.Qe3+ Kc6
17.f4 Rfe8 18.Qd3 Kb6 19.f5 Rcd8
20.Qc4 a5 21.f6 Rd6 22.Qf4 Kc6
23.Qf3+ Kd7 24.h4 Rd8 25.Qg4+ Ke8
26.Qg6+ Kd7 27.h5 Ke6 (7.054.021.916) 1746

35/59 70:04 -2.09 14...Kxc6 15.Qe6+ Kc5 16.Qe3+ Kc6
17.f4 Rfe8 18.Qd3 Kb6 19.f5 Rcd8
20.Qc4 a5 21.f6 Rd6 22.Qf4 Kc6
23.Qf3+ Kd7 24.h4 Rd8 25.Qg4+ Ke8
26.Qg6+ Kd7 27.h5 Ke6 (7.357.297.267) 1749

best move: Kb6xc6 time: 70:05.584 min n/s: 1.749.959 nodes: 7.357.297.267

Version 15 sees 15. Qe6 a bit earlier but still too late I think. There are two reasons for what I dare call a misevaluation of the position:
a) The static eval of the passed pawn on the starting square is too low in this position. Often such a pawn can not move and it is dangerous to give it a large bonus, but here in my opinion it is the piece that makes the difference between a draw and a win. It is not easy to formulate a general rule when such a pawn actually has chances to advance but probably needs help, from the queen in this case. If the search sees the pawn advance in time it is not a problem, the passer quickly gains point for having advanced in rank.
b) passed pawn pushes are not considered as 'dangerous' anymore, but advanced pawn pushes in general are. On f2 to f4 the pawn is not advanced, but f2-f4 is an important move. However, if I try treating this move as dangerous again (version 15), 15. Qe6+ and 16(or 17). f4 are still not easily found, because the evaluation of the passed pawn is low.

(The line for the starting position was just the result of a long search but I did not do any interactive checking for instance:

[D]2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - -

50/76 489:48 +1.75 1.Bxf7 Kxf7 2.Qf4 g5 3.Qf5 Qc6 4.Kh2 Ke7
5.e5 Bxe5+ 6.Nxe5 Nxe5 7.Rxe5+ dxe5
8.Qxe5+ Kf7 9.Qf5+ Ke8 10.Re1+ Kd8
11.Qxg5+ Kc7 12.Rc1 Rhf8 13.Qe7+ Kb6
14.Rxc6+ (92.161.256.696) 3135

best move: Bd5xf7 time: 489:50.932 min n/s: 3.135.937 nodes: 92.161.256.696 )

jmartus · Post by **jmartus** » Sat May 03, 2014 2:33 am

FEN: 2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1
instantly with aggressiveness set to 188 4 cores
Stockfish_14033014_x64_modern:
1/1 00:00 146 73,000 +1.96 Qd2-f4
2/2 00:00 661 220,333 +2.12 Qd2-f4 g6-g5
3/3 00:00 1,647 549,000 +2.09 Qd2-f4 Rc8-f8 Re1-e3 Bf6xb2
4/4 00:00 2,301 575,250 +2.54 Qd2-f4 Rc8-f8 Bd5-b3 Bf6-e5
5/5 00:00 4,418 736,333 +2.02 Qd2-f4 Rc8-f8 Re1-e3 Bf6-e5 Qf4-g5 Be5xb2
6/6 00:00 5,080 846,666 +2.02 Qd2-f4 Rc8-f8 Re1-e3 Bf6-e5 Qf4-g5 Be5xb2
7/7 00:00 10,654 968,545 +2.85 Bd5-b3 Rc8-f8 Bb3-a4 Rf8-d8 Ba4xd7 Rd8xd7 Ng4xf6 Kg7xf6
8/8 00:00 11,933 994,416 +2.85 Bd5-b3 Rc8-f8 Bb3-a4 Rf8-d8 Ba4xd7 Rd8xd7 Ng4xf6 Kg7xf6
9/11 00:00 24,145 1,270,789 +4.29 Bd5-b3 Nd7-e5 Ng4xf6 Qb6-d8 f2-f4 Qd8xf6 f4xe5 d6xe5 Re1-f1
10/15 00:00 195,586 2,103,075 +1.55 Bd5-b3 Bf6-e7 Qd2-f4 Rc8-f8 Re1-e3 Nd7-c5 e4-e5 Nc5-e6 Qf4-e4 d6-d5 Rd1xd5 Kg7-g8 Ng4-f6+ Be7xf6 e5xf6
11/15 00:00 263,860 2,217,310 +1.82 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Nd7xe5 Ng4xe5 Bf6xe5 Re1xe5+ d6xe5 Qd5xe5+ Qb6-e6 Qe5-g7+ Ke7-e8 Qg7xh8+ Ke8-f7 Qh8-h7+ Kf7-f6
12/20 00:00 338,424 2,271,302 +2.54 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Qb6-c6 e5xf6+ Ke7-f8 Qd5-e4 Qc6xe4+ Re1xe4 a6-a5 Rd1xd6 Rh8-h7 Ng4-e5 Nd7xe5 Re4xe5
13/20 00:00 384,673 2,331,351 +2.64 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Qb6-c6 e5xf6+ Ke7-f8 Re1-e6 Rh8-h5 Qd5xc6 Rc8xc6 Rd1xd6 Rc6xd6 Re6xd6 Nd7-c5 f2-f4
14/20 00:00 476,842 2,432,867 +2.87 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Qb6-c6 e5xf6+ Ke7-f8 Re1-e6 Rh8-h5 Qd5xc6 Rc8xc6 Rd1xd6 Rc6xd6 Re6xd6 Nd7-c5 Ng4-e3
15/20 00:00 543,068 2,479,762 +2.87 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Qb6-c6 e5xf6+ Ke7-f8 Re1-e6 Rh8-h5 Qd5xc6 Rc8xc6 Rd1xd6 Rc6xd6 Re6xd6 Nd7-c5 Ng4-e3
16/32 00:00 1,678,474 3,172,918 +2.54 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Bf6-h4 e5xd6+ Ke7-d8 Re1-e7 Qb6-c6 Qd5xc6 Rc8xc6 Re7xd7+ Kd8xd7 Ng4-e5+ Kd7-e6 Ne5xc6 Rh8-f8 f2-f3 b4-b3 a2xb3 Rf8-c8 Nc6-b4 Ke6-d7 Rd1-a1
17/32 00:00 2,806,625 3,361,227 +2.45 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Bf6-h4 e5xd6+ Ke7-f8 Rd1-d3 Kf8-g7 Rd3-f3 Rc8-f8 Rf3xf8 Rh8xf8 Re1-e7+ Bh4xe7 d6xe7 Nd7-f6 e7xf8Q+ Kg7xf8 Qd5-a8+ Kf8-e7 Ng4-e5 g6-g5
18/35 00:01 4,410,691 3,451,244 +2.32 Bd5xf7 Kg7xf7 Qd2-d5+ Kf7-e7 e4-e5 Bf6-h4 Kg2-g1 Ke7-d8 Qd5-e4 Rc8-c6 e5-e6 Nd7-c5 e6-e7+ Bh4xe7 Qe4xe7+ Kd8-c8 Qe7-g7 Rh8-d8 Ng4-f6 Kc8-b8 Nf6-d5 Qb6-b7 Qg7xg6 Rc6-c8 Re1-e7
19/35 00:03 12,101,432 3,831,992 +2.57 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Kf7-e7 e4-e5 Qb6-c6+ Kg2-h2 Bf6xe5+ Re1xe5+ d6xe5 Rd1xd7+ Qc6xd7 Qf5-f6+ Ke7-e8 Qf6xh8+ Ke8-e7 Qh8-f6+ Ke7-e8 Ng4xe5 Qd7-e7 Qf6-h8+ Qe7-f8 Qh8-h5+ Ke8-d8 Qh5-d1+ Kd8-c7 Kh2-g2
20/35+ 00:03 13,616,048 3,859,424 +2.65 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Kf7-e7 e4-e5 Qb6-c6+ Kg2-g1 Bf6xe5 Qf5xg5+ Ke7-f7 Qg5-f5+ Kf7-g7 h3-h4
20/35+ 00:03 14,028,955 3,860,471 +2.73 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Kf7-e7 e4-e5 Qb6-c6+ Kg2-g1 Bf6xe5 Qf5xg5+ Ke7-f7 Qg5-f5+ Kf7-g7 h3-h4
20/35- 00:03 14,410,883 3,844,952 +2.48 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-g1 Rh8-h4 Rd1-c1 Rh4xg4+ h3xg4 Qc6-b7 Rc1xc8 Qb7xc8
20/35- 00:03 14,952,046 3,835,825 +2.03 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-g1 Rh8-h4 Rd1-c1 Rh4xg4+ h3xg4 Qc6-b7 Rc1xc8 Qb7xc8
20/35 00:04 15,827,957 3,828,726 +1.98 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 d6xe5 Rd1xd7+ Qc6xd7 Re1xe5+ Ke7-d8 Re5-d5 Qd7xd5 Qf5xd5+ Kd8-c7 Qd5-c5+ Kc7-d7 Qc5xg5 Kd7-c6 Qg5-a5 Rh8-f8 Qa5xa6+ Kc6-c5 f2-f4 Rc8-a8 Qa6-h6 Rf8-g8
21/35+ 00:04 16,577,974 3,826,863 +2.06 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 d6xe5 Rd1xd7+ Qc6xd7 Re1xe5+ Ke7-d8 Re5-d5 Qd7xd5 Qf5xd5+ Kd8-c7 Qd5-c5+ Kc7-d7 Qc5xg5 Kd7-c6 Qg5-a5 Rh8-f8 Qa5xa6+ Kc6-c5 f2-f4 Rc8-a8
21/35 00:04 17,128,851 3,825,111 +2.06 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 d6xe5 Rd1xd7+ Qc6xd7 Re1xe5+ Ke7-d8 Re5-d5 Qd7xd5 Qf5xd5+ Kd8-c7 Qd5-c5+ Kc7-d7 Qc5xg5 Kd7-c6 Qg5-a5 Rc8-f8 Qa5xa6+ Kc6-c5 Qa6-a7+ Kc5-c4 Qa7-c7+ Kc4-d4 Qc7-d6+ Kd4-c4 f2-f4
22/42- 00:04 19,029,541 3,863,866 +1.97 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 Nd7xe5 Qf5xg5+ Ke7-d7 Re1xe5 Rh8xh3+
22/42- 00:05 20,238,211 3,875,567 +1.89 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 Nd7xe5 Qf5xg5+ Ke7-d7 Re1xe5 Rh8xh3+
22/42 00:05 22,847,321 3,920,940 +1.77 Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 Nd7xe5 Qf5xg5+ Ke7-d7 Re1xe5 Rh8xh3+

zullil · Post by **zullil** » Sat May 03, 2014 3:21 am

tttony wrote:Stockfish found the move in: 3min 12sec

FEN: 2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - 0 1

Code: Select all

Stockfish 280414 64 SSE4.2&#58;
....
 32/53-	01&#58;49	 733.513.498	6.733.929	+1,05	Re1-e3 Nd7-e5 Ng4xf6 Kg7xf6 f2-f4 Ne5-c4 Bd5xc4 Rc8xc4
 32/58+	02&#58;27	1.010.900.224	6.837.984	+1,17	Re1-e3 Nd7-e5 Ng4xf6
 32/61+	03&#58;12	1.315.631.098	6.838.816	+1,26	Bd5xf7 Kg7xf7 Qd2-f4 g6-g5 Qf4-f5 Qb6-c6 Kg2-h2 Kf7-e7 e4-e5 Bf6xe5+ Ng4xe5 Nd7xe5 Re1xe5+ d6xe5 Qf5xe5+ Ke7-f7 Qe5-f5+ Kf7-e8
 32/61+	03&#58;18	1.362.027.023	6.854.863	+1,40	Bd5xf7
 32/61+	03&#58;32	1.466.240.039	6.891.326	+1,61	Bd5xf7 Rc8-f8 Bf7xg6 Kg7xg6 Qd2xd6 Qb6xd6 Rd1xd6 Rh8-h7 e4-e5 Rh7-e7 Rd6xa6 b4-b3 a2xb3 Kg6-h7 f2-f4 Bf6-g7

Depth 33 for me:

Code: Select all

info depth 33 seldepth 57 score cp 118 lowerbound nodes 1287515370 nps 14984525 time 85923 multipv 1 pv d5f7 g7f7 d2f4 g6g5 f4f5 b6c6 g2h2 f7g7 e4e5 f6e5 g4e5 d7e5 f5g5 g7f7 g5f5 f7e7 e1e5 d6e5 f5e5 e7f7 e5f4 c6f6 d1d7 f7g6 d7d6 f6d6 f4d6 g6f5 d6b4 c8b8 b4c5 f5e4

Eelco de Groot · Post by **Eelco de Groot** » Sat May 03, 2014 3:32 am

After 15. Qxb4:

[FEN "2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - -"]

1. Bxf7 Kxf7 2. Qf4 g5 3. Qf5 Qc6 4. Kh2 Ke7 5. e5 Bxe5+
6. Nxe5 Nxe5 7. Rxe5+ dxe5 8. Qxe5+ Kf7 9. Qf5+ Ke8
10. Re1+ Kd8 11. Qxg5+ Kc7 12. Rc1 Rhf8 13. Qe7+ Kb6
14. Rxc6+ Kxc6 15. Qxb4 {?!?} Rxf2+ *

[D]2r5/8/p1k5/8/1Q6/7P/PP3r1K/8 w - -

Engine: Rainbow Serpent 20140417_014 MP (512 MB)
by Tord Romstad, Marco Costalba and Joona Kiiski

33/52 8:10 +1.72 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Rd8
25.Kg3 (673.390.278) 1373

34/54 11:51 +1.68 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Rd8
25.Qb4+ Kc7 26.Qa5+ Kd7 27.Qe5 Kc8
28.Kg3 Rd1 29.a4 (1.068.053.101) 1500

35/54 16:29 +1.68 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Kb5
25.Qd5+ (1.546.220.725) 1562

36/58 22:06 +1.68 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Rd8
25.Qb4+ Kc7 26.Qa5+ Kc8 27.Qf5+ Kb7
28.Kg3 Rcd6 29.Kf3 (2.153.072.444) 1622

37/61 28:31 +1.68 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Rd8
25.Qb4+ Kc7 26.Qa5+ Kc8 (2.778.918.529) 1623

38/61 43:50 +1.69 16.Kg3 Rff8 17.h4 Rg8+ 18.Kh3 Rgd8
19.Qe4+ Kb6 20.h5 Rc6 21.Kg3 Rg8+
22.Kf4 Rf8+ 23.Kg4 Rg8+ 24.Kh4 Rd8
25.Qb4+ Kc7 26.Qa5+ Kc8 {[D]2kr4/8/p1r5/Q6P/7K/8/PP6/8 w - -
This seems to be a fortress.
A draw is inevitable. Serpent's
evaluation is 1.69 too high

} 27.Qf5+ Kb7
28.Kg3 Rcd6 29.Qe4+ (4.263.901.101) 1621

testposition

testposition

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