Houdini missed easy win in TCEC

[kgburcham]

[d] 4k3/5p2/5p2/2b2N1p/8/r5P1/R4PKP/8 w - -

8 processor(s) found, POPCNT available
NUMA configuration with 1 node(s), offset 0
Nalimov 6 men EGTB available - 999 MB cache
Engine: Houdini 4 Pro x64 (8192 MB)
by Robert Houdart
21/39 0:00 +1.21 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxf5+ Kf6 5.Kf4 Bf8 6.f3 Bc5 7.h4 Bb6 8.g4 Bc7+ 9.Ke4 Kg6 10.Ne7+ Kg7 11.Nc6 hxg4 12.fxg4 Kf6 13.Kd5 Bf4 14.h5 (20.223.057) 20593 TB:67
22/40 0:01 +1.17 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxf5+ Kf6 5.Kf4 Bb4 6.f3 Be1 7.Ne3 Bf2 8.Ke4 Bg1 9.Nd5+ Kg6 10.h4 Bf2 11.Ne7+ Kf6 12.Nf5 Be1 13.g4 Kg6 14.Ke3 (35.636.271) 21212 TB:173
23/40 0:02 +1.18 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxf5+ Kf6 5.Kf4 Bb4 6.Ne3 Bd6+ 7.Ke4 Bc5 8.f3 Kg6 9.Nf5 Kf6 10.Kf4 Bb6 11.Ne3 Kg6 12.Ke4 Bc5 13.Nf5 (57.436.195) 21560 TB:579
24/43 0:04 +1.24 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.Nh3 Bc5 8.Nf4 Ba7 9.Nh3 Bb6 10.f4 Kg6 11.Ng5 Bc5 12.Kd3 Ba7 13.Nf3 Kh5 14.Ne5 (109.542.050) 22323 TB:1.191
25/43 0:06 +1.23 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.Nh3 Bc5 8.Kd3 Ke7 9.f4 f6 10.Ke2 Kf8 11.Nf2 Kg7 12.Nd1 Bg1 13.h3 Bc5 14.Ne3 (147.552.046) 22363 TB:2.326
26/43 0:09 +1.23 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.Nh3 Bc5 8.Kd3 Ke7 9.f4 f6 10.Ke2 Kf8 11.Nf2 Kf7 12.Nd1 Bg1 13.h3 Bc5 14.Ne3 (203.088.215) 22349 TB:5.419
27/45 0:13 +1.25 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.f3 Kg5 8.Nh3+ Kg6 9.Ke3 Bc5+ 10.Kd3 Bd6 11.Kd4 Kf6 12.Kd5 Bb8 13.f4 Ba7 14.Ng5 (315.077.465) 22615 TB:10.637
28/46 0:20 +1.25 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.f3 Kg5 8.Nh3+ Kg6 9.Ke3 Bc5+ 10.Kd3 Kg7 11.Kc4 Ba7 12.Nf4 Kf6 13.Kd5 Bg1 14.h3 (462.787.531) 22554 TB:22.092
29/49 0:27 +1.25 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.f3 Kg5 8.Nh3+ Kg6 9.Ke3 Bc5+ 10.Kd3 Kg7 11.Kc4 Ba7 12.Kd5 Kf6 13.f4 Kg6 14.Ng5 (618.185.714) 22605 TB:43.628
30/49 0:39 +1.25 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.f3 Kg5 8.Nh3+ Kg6 9.Kd3 Bc5 10.Kc4 Ba7 11.Kd5 Kf6 12.Kd6 Bb8+ 13.Kc5 Ba7+ 14.Kd5 (896.095.291) 22687 TB:87.780
31/53 1:04 +1.25 1.Rxa3 Bxa3 2.Ng7+ Ke7 3.Kf3 f5 4.Nxh5 Ke6 5.Nf4+ Kf6 6.Ke2 Bd6 7.f3 Kg5 8.Nh3+ Kg6 9.f4 Kf6 10.Nf2 Bc5 11.Nd3 Bb6 12.Ne5 Ke6 13.Kd3 Bc5 14.Nf3 (1.444.992.417) 22573 TB:179.891
32/61 1:52 +1.33++ 1.Rxa3 (2.568.973.700) 22910 TB:396.831
32/66 2:02 +1.51++ 1.Rxa3 (2.796.366.728) 22910 TB:418.440
32/68 2:09 +1.89++ 1.Rxa3 (2.961.099.818) 22915 TB:432.438
32/74 2:46 +2.87++ 1.Rxa3 (3.840.864.097) 23021 TB:589.969
32/92 4:15 +5.53++ 1.Rxa3 (5.993.299.235) 23451 TB:1.197.396
32/109 7:21 +9.12 1.Rxa3 Bxa3 2.Kh3 Kd7 3.Kh4 Ke6 4.Ne3 Bb4 5.Kxh5 f5 6.Kh6 Bf8+ 7.Kh7 Bc5 8.h4 Kf6 9.Nd1 Ke7 10.Kh6 Bd6 11.f4 Kf8 12.Ne3 Bc5 13.Nxf5 Kg8 14.Kg5 (11.346.689.719) 25715 TB:2.441.583
32/109 7:28 +9.12 1.Rxa3 Bxa3 2.Kh3 Kd7 3.Kh4 Ke6 4.Ne3 Bb4 5.Kxh5 f5 6.Kh6 Bf8+ 7.Kh7 Bc5 8.h4 Kf6 9.Nd1 Ke7 10.Kh6 Bd6 11.f4 Kf8 12.Ne3 Bc5 13.Nxf5 Kg8 14.Kg5 (11.544.338.628) 25732 TB:2.516.256
best move: Ra2xa3 time: 7:29.328 min n/s: 25.732.000 CPU 99.6% n/s(1CPU): 25.835.341 nodes: 11.544.338.628 TB: 2.516.256

[Jouni]

SF solves this also without syzygy. But score is slower, why?

Analysis by Stockfish 090916 64 BMI2:

1.Rxa3 Bxa3
+- (1.91 --) Depth: 43/63 00:00:38 381mN
1.Rxa3
+- (1.99 ++) Depth: 43/63 00:00:38 386mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 f6 11.Kxh4 Kg8 12.Kg4 Kh7 13.h4 Ba3 14.Ne3 Bb2 15.Kh5 Kg7 16.Nf5+ Kh7 17.Ng3 Ba3 18.Ne4 Bb2 19.Nc5 Bc1 20.Nd7 Bxf4 21.Nxf6+ Kg7 22.Nd5 Bd2 23.f4 Kf7 24.Kg5 Ke6 25.Nc7+ Kd6 26.Na6 Ke6 27.h5 Kf7
+- (2.05) Depth: 43/63 00:00:39 394mN
1.Rxa3
+- (2.12 ++) Depth: 44/64 00:00:44 451mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kd7 9.Nf5 Bc5 10.f3 Ke6 11.Nxh4 Kf6 12.Nf5 Kg6 13.h4 Bf8 14.h5+ Kf6 15.Ng3 Bh6 16.Ne4+ Ke6 17.f5+ Ke5 18.Ng5 Kf6 19.f4 Ke7 20.Ne4 f6 21.Nf2 Bf8 22.Kf3 Kf7 23.Ke4 Bd6 24.Ng4 Kg7 25.Kd5 Bxf4 26.Ke6 Bc1 27.h6+ Kh7 28.Kxf6
+- (2.12) Depth: 44/64 00:00:47 486mN
1.Rxa3
+- (2.20 ++) Depth: 45/64 00:00:52 543mN
1.Rxa3
+- (2.27 ++) Depth: 45/64 00:00:53 558mN
1.Rxa3
+- (2.38 ++) Depth: 45/65 00:01:02 664mN
1.Rxa3
+- (2.53 ++) Depth: 45/65 00:01:08 738mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bd8 10.Nxh4 Bb6 11.f3 Kg7 12.Nf5+ Kf6 13.h4 Bc5 14.Ng3 Bd4 15.h5 Bb6 16.Ne4+ Kg7 17.Kf5 Ba5 18.h6+ Kg8 19.Nf6+ Kh8 20.Ng4 Kg8 21.Ne5 Bd2 22.Nc4 Bc1 23.Nb6 Bd2 24.Nd5 Ba5 25.Ne7+ Kf8 26.Nc6 Bd2 27.Kg5 Kg8 28.Ne7+ Kh7 29.Nd5 Ba5 30.Kf6 Kxh6 31.Kxf7 Be1 32.f5 Kg5 33.Ke6 Bg3 34.f6
+- (2.67) Depth: 45/71 00:01:17 834mN
1.Rxa3
+- (2.74 ++) Depth: 46/74 00:01:24 926mN
1.Rxa3
+- (2.81 ++) Depth: 46/74 00:01:32 1024mN
1.Rxa3 Bxa3
+- (2.74 --) Depth: 46/78 00:01:36 1070mN
1.Rxa3
+- (2.83 ++) Depth: 46/78 00:01:43 1157mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Bc5 25.Kf5 Bf8 26.Kg5 Kh7 27.Ne5 Bh6+ 28.Kf5 Kg8 29.Kg4 Bf8 30.Kg5 Bb4 31.f4 Bd2
+- (2.95) Depth: 46/78 00:01:48 1213mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Bc5 25.Kf5 Bf8 26.Kg5 Kh7 27.Ne5 Bh6+ 28.Kf5 Kg8 29.Kg4 Bf8 30.Kg5 Bb4 31.f4 Bd2 32.h6 Be1 33.Kf5
+- (2.95) Depth: 47/78 00:01:49 1220mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Bc5 25.Kf5 Bf8 26.Kg5 Kh7 27.Ne5 Bh6+ 28.Kf5 Kg8 29.Kg4 Bf8 30.Kg5 Bd6 31.Nc6 Bc5 32.h6 Kh7 33.Ne5
+- (2.95) Depth: 48/78 00:01:51 1250mN
1.Rxa3
+- (3.03 ++) Depth: 49/78 00:01:59 1341mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Kh8 25.Kf5 Kh7 26.Kg5 Bh6+ 27.Kg4 Bd2 28.f4 Be3 29.Ne5 Kg8 30.Kg5 Bc5 31.h6 Bd4 32.Kf5 Bb6 33.Kg5
+- (3.04) Depth: 49/78 00:02:06 1422mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Kh8 25.Kf5 Kh7 26.Kg5 Bh6+ 27.Kg4 Bd2 28.f4 Kg8 29.Kf5 Bc1 30.Kg5 Kh7 31.Kg4 Ba3 32.Ne5 Kg8 33.Kg5 Bb2 34.h6
+- (3.04) Depth: 50/78 00:02:09 1460mN
1.Rxa3
+- (3.11 ++) Depth: 51/78 00:02:27 1672mN
1.Rxa3 Bxa3 2.Kh3 Bc5 3.Ne3 f5 4.Kh4 f4 5.gxf4 Bd6 6.Kg5 h4 7.h3 Be7+ 8.Kg4 Kf8 9.Nf5 Bc5 10.f3 Ba3 11.Kxh4 Kg8 12.Kg5 Kh7 13.h4 Bc1 14.Ne7 Bb2 15.Nd5 Kg7 16.h5 Bc1 17.Nf6 Kh8 18.Ng4 Kg7 19.Kf5 Kg8 20.Ke4 Kh8 21.f5 Ba3 22.f6 Kg8 23.Ne5 Bf8 24.Nc6 Kh8 25.Kf5 Kh7 26.Ne5 Kg8 27.Kg5 Bc5 28.f4 Bd4 29.h6 Bb2 30.Kf5 Ba3 31.Kg4 Bb2 32.Kg5 Ba3
+- (3.11) Depth: 51/78 00:02:51 1973mN