Five test positions from the »Titans«

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Mike S.
Posts: 1480
Joined: Thu Mar 09, 2006 5:33 am

Five test positions from the »Titans«

Post by Mike S. »

The following are from the "Clash of the Titans", see
http://www.talkchess.com/forum/viewtopic.php?t=42754

[D]8/R5R1/7k/4P1p1/6P1/6KP/2r2r2/8 b - - 0 65
65...Rc3+

[D]2r1r1k1/1p4bp/p3p1p1/qnnpP3/2p2PQP/2P1B1P1/1PB2N2/3R1RK1 w - - 0 26
26.Bxg6

[D]1r1q1rk1/4bp1p/n3p3/pbNpP1PB/5P2/1P2B1K1/1P1Q4/2RR4 w - - 0 31
31.Ne4

[D]6rk/2qr2p1/5pQn/p1pPpP2/PpP1B2P/1P6/K5R1/6R1 w - - 0 122
122.Qxh6+

[D]6k1/4q3/1p2p1p1/p1p1p3/r1P1P3/6PR/5P2/1Q4K1 w - - 0 52
52.Qb2 (e.g. 52...Qc7 53.Qb5)

Code: Select all

[Event "Clash of the Titans"]
[Site "Hamburg"]
[Date "2012.03.09"]
[Round "15.1"]
[White "Houdini 2.0c Pro x64"]
[Black "Komodo64 SSE Version 4"]
[Result "1/2-1/2"]
[ECO "D43"]
[SetUp "1"]
[FEN "8/R5R1/7k/4P1p1/6P1/6KP/2r2r2/8 b - - 0 65"]
[PlyCount "38"]

65... Rc3+ $1 66. Kxf2 Rf3+ 67. Ke2 Re3+ 68. Kd2 Rd3+ 69. Kc1 Rc3+ 70. Kb2 Rb3+
71. Kc2 Rc3+ 72. Kd1 Rd3+ 73. Ke1 Re3+ 74. Kf1 Re1+ 75. Kg2 Re2+ 76. Kf3 Re3+
77. Kg2 Re2+ 78. Kg1 Rg2+ 79. Kf1 Rf2+ 80. Kg1 Rf1+ 81. Kg2 Rf2+ 82. Kg3 Rf3+
83. Kg2 Rf2+ 84. Kxf2 1/2-1/2

[Event "Clash of the Titans"]
[Site "Hamburg"]
[Date "2012.03.09"]
[Round "13.1"]
[White "Komodo64 SSE Version 4"]
[Black "Rybka 4.1 SSE42 x64"]
[Result "1-0"]
[ECO "B09"]
[SetUp "1"]
[FEN "2r1r1k1/1p4bp/p3p1p1/qnnpP3/2p2PQP/2P1B1P1/1PB2N2/3R1RK1 w - - 0 26"]
[PlyCount "25"]

26. Bxg6 $1 hxg6 27. Qxg6 Qc7 28. Ng4 Rf8 29. Nf6+ Rxf6 30. exf6 Qf7 31. Qxf7+
Kxf7 32. fxg7 Nd3 33. f5 exf5 34. Rxf5+ Kxg7 35. Rdf1 Re8 36. Rg5+ Kh7 37. Rf7+
Kh8 38. Rxd5 1-0

[Event "Clash of the Titans"]
[Site "Hamburg"]
[Date "2012.03.17"]
[Round "58.1"]
[White "Rybka 4.1 SSE42 x64"]
[Black "Komodo64 SSE Version 4"]
[Result "1-0"]
[ECO "B82"]
[SetUp "1"]
[FEN "1r1q1rk1/4bp1p/n3p3/pbNpP1PB/5P2/1P2B1K1/1P1Q4/2RR4 w - - 0 31"]
[PlyCount "9"]

31. Ne4 $3 dxe4 32. Qh2 Bd7 33. Rh1 Kg7 34. Bg6 h5 35. Qxh5 1-0

[Event "Clash of the Titans"]
[Site "Hamburg"]
[Date "2012.03.15"]
[Round "51.1"]
[White "Stockfish 2.2.2 JA SSE42 x64"]
[Black "Rybka 4.1 SSE42 x64"]
[Result "1-0"]
[ECO "C95"]
[SetUp "1"]
[FEN "6rk/2qr2p1/5pQn/p1pPpP2/PpP1B2P/1P6/K5R1/6R1 w - - 0 122"]
[PlyCount "65"]

122. Qxh6+ $1 gxh6 123. Rxg8+ Kh7 124. Rf8 Rf7 125. d6 Qd7 126. Bc6 Rxf8 127.
Bxd7 Rd8 128. Be6 Rxd6 129. Bg8+ Kh8 130. Bd5 Kh7 131. Rg6 h5 132. Kb2 Kh8 133.
Rg8+ Kh7 134. Rc8 Rd7 135. Rxc5 Ra7 136. Rb5 Kh6 137. Rb7 Ra8 138. Rh7+ Kxh7
139. Bxa8 Kg8 140. Bf3 Kf7 141. Bxh5+ Ke7 142. Be2 e4 143. h5 Kf8 144. c5 Kf7
145. c6 Ke7 146. h6 Kd6 147. h7 Kxc6 148. h8=Q Kd6 149. Qxf6+ Kc5 150. Bb5 e3
151. Be2 Kd5 152. Bf3+ Kc5 153. Qc6+ Kd4 154. Qd5# 1-0

[Event "Clash of the Titans"]
[Site "Hamburg"]
[Date "2012.03.08"]
[Round "9.1"]
[White "Komodo64 SSE Version 4"]
[Black "Rybka 4.1 SSE42 x64"]
[Result "1-0"]
[ECO "C54"]
[SetUp "1"]
[FEN "6k1/4q3/1p2p1p1/p1p1p3/r1P1P3/6PR/5P2/1Q4K1 w - - 0 52"]
[PlyCount "5"]

52. Qb2 $1 Qc7 53. Qb5 Ra1+ 54. Kg2 1-0
Regards, Mike
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peter
Posts: 3187
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Five test positions from the »Titans«

Post by peter »

Mike S. wrote:The following are from the "Clash of the Titans", see
http://www.talkchess.com/forum/viewtopic.php?t=42754
Hi Mike!

Very nice collection of highlights, thank you and sorry for not having had the time to search for such by myself right now.
I like your third one most, which is not so easy even for Houdini or Stockfish with twelve cores, the other ones Stockfish 2.2.2 solved rather quickly on that hardware at single trials but all of them are really beautiful to my eyes.
Peter.
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Uri Blass
Posts: 10346
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Five test positions from the »Titans«

Post by Uri Blass »

The first position is not correct because 65...Rg2+ also draw the game after Kf3 Rgf2+ Ke4 Rfe2+ and later Rxe5+ when the king go to f5 or d5 and it is also a draw after 65...Rf3+
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peter
Posts: 3187
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Five test positions from the »Titans«

Post by peter »

Uri Blass wrote:The first position is not correct because 65...Rg2+ also draw the game after Kf3 Rgf2+ Ke4 Rfe2+ and later Rxe5+ when the king go to f5 or d5 and it is also a draw after 65...Rf3+
Hi Uri!
You're right as for a testposition with single best move only. I even saw that but didn't care, because any engine showing 0.00 eval with Rg2+ simply would get full points for solving too, as much as Kf3 with any other eval than 0.00 would not.
While I didn't see the latter as an output till now, Rg2+ with winning for White- eval I did get from some engines, in that case, with any other eval than 0.00, even with endless checks in main variant, I'd say not solved as for the theme of the position
Peter.
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Five test positions from the »Titans«

Post by zullil »

peter wrote:
Mike S. wrote:The following are from the "Clash of the Titans", see
http://www.talkchess.com/forum/viewtopic.php?t=42754
Hi Mike!

Very nice collection of highlights, thank you and sorry for not having had the time to search for such by myself right now.
I like your third one most, which is not so easy even for Houdini or Stockfish with twelve cores, the other ones Stockfish 2.2.2 solved rather quickly on that hardware at single trials but all of them are really beautiful to my eyes.
Critter-1.4 (8 cores) solves the third quickly:

Code: Select all

18/59+ 00:42 343797860 8047891  +1.29 Ne4 dxe4 Qh2 Qe8 Rh1 Nb4 Bg6 h6 Qxh6
18/59+ 00:46 375507892 8108045  +1.48 Ne4 dxe4 Qh2 Qe8 Rh1 Nb4 Bg6 h6 Qxh6
18/59+ 00:56 458439977 8115705  +1.77 Ne4 dxe4 Qh2 Qe8 Rh1 Nb4 Bg6 h6 Qxh6
18/65  01:16 630600412 8270169  +1.91 Ne4 Rc8 Rxc8 Qxc8 Qh2 Nb4 Rc1 Qxc1 Nf6+ Bxf6 Bxc1 Be7 Qf2 Nd3 Qb6 Nxc1 Qxb5 Bb4 Bd1 Rd8 Kf3 Kg7 Qb6 Rg8 Qa6 h6 gxh6+ Kxh6 f5 Re8 Qa7
19/65+ 01:22 685795913 8316104  +2.03 Ne4 Rc8 Rxc8 Qxc8 Qh2 Nb4 Rc1 Qxc1 Nf6+ Bxf6 Bxc1 Be7 Qf2 Nd3 Qb6 Nxc1 Qxb5 Bb4 Bd1 Rd8 Kf3 Kg7 Qb6 Rg8 Qa6 h6 gxh6+ Kxh6 f5 Rf8 Qa7 Na2 f6
19/70- 01:25 711274578 8321142  +1.80 Ne4 Rc8 Rxc8 Qxc8 Qh2 Nb4 Rc1 Qxc1 Nf6+ Bxf6 Bxc1 Be7 Qf2 Nd3 Qb6 Nxc1 Qxb5 Bb4 Bd1 Rd8 Kf3 Kg7 Qb6 Rg8 Qa6 h6 gxh6+ Kxh6 f5 Rf8 Qa7 Na2 f6
19/70  01:32 774763621 8351265  +2.06 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Rf8 Rh2 Rh8 Rc2 Rh7
20/70- 01:34 790247187 8351004  +1.93 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Rf8 Rh2 Rh8 Rc2 Rh7
20/70  01:40 844961960 8401395  +1.82 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Be7 Rh2 Bc5 Bxc5 Nxc5 Rc2 Rc8 Rc1 e3 Kf3 Rh8 Rxc5 Rxh5
21/70+ 02:20 1208454818 8606798  +1.93 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Be7 f5 exf5+ Kxf5 Rf8+ Kxe4 Nf2+ Bxf2 Rxf2 Ra1 Rh2 Bd1 Rd2 Kf5 Rf2+ Ke6 Bxg5 Rxa5 Rxb2
21/70+ 02:53 1514800595 8716420  +2.04 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Be7 f5 exf5+ Kxf5 Rf8+ Kxe4 Nf2+ Bxf2 Rxf2 Ra1 Rh2 Bd1 Rd2 Kf5 Rf2+ Ke6 Bxg5 Rxa5 Rxb2
21/70+ 04:23 2353877246 8927327  +2.21 Ne4 Rc8 Rxc8 Qxc8 Qh2 Bd3 Rxd3 dxe4 Rd1 Kg7 Rh1 Rh8 Bxf7 h5 Bxh5 Nb4 Qg2 Qc2 Qxc2 Nxc2 Bb6 Bd8 Bc5 Nb4 Kg4 Nd3 Be3 Be7 f5 exf5+ Kxf5 Rf8+ Kxe4 Nf2+ Bxf2 Rxf2 Ra1 Rh2 Bd1 Rd2 Kf5 Rf2+ Ke6 Bxg5 Rxa5 Rxb2
21/70  06:31 3557977975 9079369  +2.39 Ne4 Rc8 Nc3 Bb4 Rh1 Bxc3 bxc3 d4 Bxd4 Bc6 Rh2 Qd5 Bg4 Bb7 c4 Qc6 Qxa5 Rfd8 Rd1 Qe4 Re2 Qg6 Red2 h5 gxh6/ep Qxh6 Bg1 Rxd2 Rxd2 Nc7 Rd7
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peter
Posts: 3187
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Five test positions from the »Titans«

Post by peter »

zullil wrote: Critter-1.4 (8 cores) solves the third quickly:
Indeed, Louis, Critter is rather good in this one.
Houdini took a little more time here:

1r1q1rk1/4bp1p/n3p3/pbNpP1PB/5P2/1P2B1K1/1P1Q4/2RR4 w - - 0 1

Analysis by Houdini 2.0c Pro x64:

1.Sxa6 Lxa6 2.Tc6 Lb5 3.Tc2 Lb4 4.Dh2
= (0.09) Tiefe: 6/18 00:00:00 7kN
...
1.b4 Lxc5 2.bxc5 Dc7 3.Lf3 d4 4.Dxd4 Tfd8 5.Dc3 Txd1 6.Txd1 Sb4 7.Td6 Lc6 8.Ld4 Sd5 9.Dc2 Se7 10.Lg4 Ld5 11.Df2 a4 12.Tb6 Td8 13.Dc2 Lb3 14.De4 Sd5
+/- (1.34) Tiefe: 22/81 00:03:07 3834mN
1.Se4
+- (1.59 !) Tiefe: 22/81 00:03:35 4450mN
1.Se4
+- (2.12 !) Tiefe: 22/81 00:04:23 5521mN
1.Se4
+- (3.54 !) Tiefe: 22/81 00:07:36 9880mN
1.Se4 Tc8 2.Sf6+ Lxf6 3.Txc8 Dxc8 4.gxf6 Kh8 5.Kh4 Db8 6.Tg1 Sb4 7.Lc5 Tg8 8.Lxf7 Txg1 9.Lxg1 Df8 10.Lxe6 Dh6+ 11.Kg3 Dg6+ 12.Kh2 Dh6+ 13.Lh3 Lf1 14.Dc3 Sc6 15.e6 Dxf4+ 16.Dg3 Dxf6 17.e7 Sxe7 18.Lxf1 Dxb2+ 19.Lg2 Df6 20.Le3 Sf5 21.Df4 d4 22.Lxd4 Dxd4 23.Dxf5 Dd6+ 24.Kg1 Dd1+ 25.Kf2 Dd2+ 26.Kg3 De3+ 27.Df3
+- (2.85) Tiefe: 22/81 00:18:21 24562mN
1.Se4
+- (3.00 !) Tiefe: 23/81 00:18:30 24754mN
1.Se4
+- (3.30 !) Tiefe: 23/81 00:18:43 25043mN
1.Se4
+- (4.01 !) Tiefe: 23/81 00:20:16 27161mN
...
1.Se4 Tc8 2.Sf6+ Lxf6 3.Txc8 Dxc8 4.gxf6 Kh8 5.Kh4 Db8 6.Tg1 Sb4 7.Lc5 Tg8 8.Lxf7 Txg1 9.Lxg1 Df8 10.Lxe6 Dh6+ 11.Kg3 Dg6+ 12.Kh2 Dh6+ 13.Lh3 Lf1 14.Dc3 Sc6 15.e6 Dxf4+ 16.Dg3 Dxf6 17.e7 Sxe7 18.Lxf1 Dxb2+ 19.Lg2 Df6 20.Le3 h6 21.Ld2 Kh7 22.Lc3 Df7 23.Dd3+ Kg8 24.Lxa5 Kf8 25.Lc3 Dh5+ 26.Kg1 Dg5 27.Ld2 Df6 28.Lxd5 Sxd5 29.Dxd5 Kg7 30.b4 Dg6+ 31.Kf2 Df6+ 32.Kg2
+- (4.28) Tiefe: 25/81 00:31:04 42151mN
Peter.
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peter
Posts: 3187
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Five test positions from the »Titans«

Post by peter »

Stockfish, at a second try, was faster than the time before:

1r1q1rk1/4bp1p/n3p3/pbNpP1PB/5P2/1P2B1K1/1P1Q4/2RR4 w - - 0 1

Analysis by Stockfish 2.2.2 JA SSE42:

1.Sxa6 Lxa6 2.Dc2 Dc8 3.Db1 Db7
= (0.16) Tiefe: 6/6 00:00:00 6kN
...
1.b4 Lxc5 2.bxc5 Dc7 3.Th1 Sb4 4.Le2 Dc6 5.Lxb5 Dxb5 6.c6 Sxc6 7.Dc2
+- (1.41 !) Tiefe: 24/53 00:00:20 245mN
1.Se4 a4 2.Dh2 Dd7 3.Lf3 Tfe8 4.Th1 dxe4 5.Dxh7+ Kf8 6.Dh6+
+- (1.59 !) Tiefe: 24/53 00:00:29 367mN
...
1.Se4 dxe4 2.Dh2 Ld3 3.Th1 Lxg5 4.fxg5 Dd5 5.Lg6 Dxe5+ 6.Lf4 Dxf4+ 7.Kxf4
+- (2.66 !) Tiefe: 25/53 00:00:43 558mN
...
1.Se4 dxe4 2.Dh2 Ld3 3.Th1 f5 4.Lg6 Tf7 5.Lxf7+ Kxf7 6.Dxh7+ Ke8 7.Tc6 Dd5 8.Thc1 Dxb3 9.Dg8+ Kd7 10.Tc8
+- (2.98 !) Tiefe: 27/53 00:01:02 825mN
...
1.Se4 Tc8 2.Sf6+ Lxf6 3.gxf6 Kh8 4.Kh2 Txc1 5.Txc1 Ld7 6.Tg1 Sb4 7.f5 Db8 8.Ld4 Dc8 9.Dh6 Tg8 10.Tg7 Dc2+ 11.Kg3 Dd3+ 12.Le3
+- (3.69 !) Tiefe: 28/53 00:01:52 1550mN
Peter.
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Steve Maughan
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Location: Florida, USA

Re: Five test positions from the »Titans«

Post by Steve Maughan »

#2 is solved quite quickly by Chiron 1.1 (2.2 GHz i7)

[D]2r1r1k1/1p4bp/p3p1p1/qnnpP3/2p2PQP/2P1B1P1/1PB2N2/3R1RK1 w - - 0 1

Analysis by Chiron 1.1a 64bit:

26.Ra1 Qd8 27.Bxc5 Rxc5 28.h5 d4 29.hxg6 dxc3 30.gxh7+ Kh8 31.bxc3 Nxc3 32.Qh5 Re7 33.Bg6 Ra5 34.Rac1 Ra3 35.Kg2 Qd5+ 36.Kh2 b5
+- (1.46) Depth: 19/33 00:00:06 25011kN
+/- (1.29) Depth: 20/43 00:00:14 56939kN
26.Bxc5 Rxc5 27.h5 Rc7 28.Bb1 Qb6 29.hxg6 h6 30.Rd2 Rf8 31.Rfd1 a5 32.Qh5 a4 33.Kh1 Qe3 34.Kg2 a3 35.Ng4 Qa7
+- (1.80 ++) Depth: 20/43 00:00:17 66155kN
+- (1.51) Depth: 20/43 00:00:18 70234kN
26.Bxg6
+- (2.14 ++) Depth: 20/45 00:00:23 89939kN
+- (3.31 ++) Depth: 26/50 00:03:04 730mN
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gleperlier
Posts: 1033
Joined: Sat Feb 04, 2012 10:03 pm

Re: Five test positions from the »Titans«

Post by gleperlier »

Analyses by Vitrivius 1.1H on 5 minutes maximum

8/R5R1/7k/4P1p1/6P1/6KP/2r2r2/8 b - - 0 1

Don't find it in 5 minutes : Analysis by Vitruvius_1.1H_x64:

1...Tf2-g2+ 2.Rg3-f3 Tc2-f2+ 3.Rf3-e4 Tg2xg4+ 4.Re4-d5 Tg4-a4 5.Tg7-h7+ Rh6-g6 6.Ta7xa4 Rg6xh7 7.e5-e6 Rh7-g7 8.Ta4-a8 Tf2-e2 9.Rd5-d6 Te2-d2+ 10.Rd6-e5 Td2-e2+ 11.Re5-f5 Te2-e1 12.Ta8-c8 Te1-e2 13.Tc8-b8 Te2-e1 14.Tb8-d8 Te1-e3 15.Td8-d7+ Rg7-f8 16.Td7-h7 Te3-e1 17.Rf5-f6 Te1-f1+ 18.Rf6xg5 Tf1-e1 19.Rg5-f5 Te1-f1+ 20.Rf5-e5 Tf1-e1+ 21.Re5-d6 Te1-d1+ 22.Rd6-c5 Td1-e1 23.Rc5-d5 Te1-d1+ 24.Rd5-c6 Td1-e1 25.Rc6-d7 Te1-d1+ 26.Rd7-c8 Rf8-e8 27.h3-h4 Td1-d8+ 28.Rc8-c7
+- (1.87) Profondeur: 29 00:04:24 2082mN

2r1r1k1/1p4bp/p3p1p1/qnnpP3/2p2PQP/2P1B1P1/1PB2N2/3R1RK1 w - - 0 1

Don't find it in 5 minutes : Analysis by Vitruvius_1.1H_x64:

1.h4-h5 Cb5xc3 2.Fe3-d2 d5-d4 3.b2xc3 d4-d3 4.Fc2-b1 g6xh5 5.Dg4xh5 Te8-f8 6.Fd2-e3 Tf8-f7 7.Dh5-h4 Tc8-c6 8.Fe3-d2 Cc5-b3 9.Fd2-e1 Da5-c5 10.Rg1-h2 Dc5-a3 11.Tf1-h1 Da3-b2 12.Rh2-g1 Fg7-f8 13.Cf2-e4 Db2-e2 14.Dh4-g5+ Rg8-h8 15.Dg5-h5 Ff8-c5+ 16.Ce4xc5 De2xh5 17.Th1xh5 Tc6xc5
+- (2.16 ++) Profondeur: 24 00:04:07 1755mN

1r1q1rk1/4bp1p/n3p3/pbNpP1PB/5P2/1P2B1K1/1P1Q4/2RR4 w - - 0 1

Don't find it in 5 minutes : Analysis by Vitruvius_1.1H_x64:

1.Td1-h1 Ca6xc5 2.Fe3xc5 Fe7xc5 3.Tc1xc5 Dd8-b6 4.Dd2-c2 Fb5-d3 5.Dc2xd3 Db6xc5 6.Fh5-g4 h7-h5 7.Th1xh5 Dc5-g1+ 8.Rg3-f3 Tb8xb3 9.Dd3xb3 Dg1-f1+ 10.Rf3-g3 Df1-g1+ 11.Rg3-h4 Dg1-h2+ 12.Db3-h3 Dh2xf4 13.Dh3-g3 Df4-e4 14.Th5-h6 Rg8-g7 15.Dg3-f2 De4xe5 16.Fg4-h5 De5-e4+ 17.Rh4-h3 De4-e5 18.Df2-c2 De5-e3+ 19.Rh3-g4 De3-g1+ 20.Rg4-f3 Dg1-f1+ 21.Dc2-f2 Df1xf2+ 22.Rf3xf2 Tf8-b8
+/- (1.38 ++) Profondeur: 23 00:04:45 2019mN

But Rybka don't find also :shock: Strange no ?

Analysis by Deep Rybka 4.1 SSE42 x64:

1.Td1-h1 Ca6xc5 2.Fe3xc5 Fe7xc5 3.Tc1xc5 Rg8-g7 4.Fh5-f3 Dd8-b6 5.Dd2-c2 Tf8-h8 6.f4-f5[] Rg7-g8 7.Th1-h6 Fb5-d7 8.Dc2-c3 Rg8-f8 9.f5xe6 Fd7xe6 10.Ff3xd5 Db6-d8 11.Dc3-e3 Fe6xd5 12.Th6-d6 Dd8-e7 13.Tc5xd5 Th8-g8 14.e5-e6 h7-h6
+/- (1.16) Profondeur: 17 00:03:15 51806kN

6rk/2qr2p1/5pQn/p1pPpP2/PpP1B2P/1P6/K5R1/6R1 w - - 0 1

Find it in few seconds : Analysis by Vitruvius_1.1H_x64:

122.Dg6xh6+ g7xh6 123.Tg2xg8+ Rh8-h7 124.Tg8-f8 Td7-g7 125.Tg1-g6 Tg7-f7 126.d5-d6 Dc7-d7 127.Tf8xf7+ Dd7xf7 128.Fe4-d5 Df7-f8 129.d6-d7 Df8-d6 130.Fd5-g8+ Rh7-h8 131.Fg8-e6 Dd6-d2+ 132.Ra2-b1
+- (3.46 ++) Profondeur: 21 00:00:04 36866kN

Nouvelle partie
6k1/4q3/1p2p1p1/p1p1p3/r1P1P3/6PR/5P2/1Q4K1 w - - 0 1

Find in few seconds : Analysis by Vitruvius_1.1H_x64:

52.Db1-b2 De7-g7 53.Db2xb6 Rg8-f7 54.g3-g4 Ta4-a1+ 55.Rg1-g2 Ta1-d1 56.Db6xc5 g6-g5 57.Dc5xa5 Rf7-f6 58.Th3-f3+ Rf6-e7 59.c4-c5 Dg7-h6 60.Da5-c7+ Re7-e8 61.Dc7-f7+ Re8-d8 62.Tf3-h3 Td1-g1+ 63.Rg2xg1 Dh6xh3 64.Df7-f8+ Rd8-c7 65.Df8-d6+ Rc7-b7 66.Dd6-b6+ Rb7-a8 67.Db6xe6 Dh3-c3 68.De6-d5+ Ra8-a7 69.Rg1-g2 Dc3-b2 70.Dd5-d7+ Ra7-a6 71.c5-c6 Db2-e2
+- (3.36 ++) Profondeur: 18 00:00:02 23390kN[/u]
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User avatar
Mike S.
Posts: 1480
Joined: Thu Mar 09, 2006 5:33 am

Re: Five test positions from the »Titans«

Post by Mike S. »

You both are right. For these reasons, I think #1 is not a suitable test position.

After some interactive analysis:

Analysis by Komodo32 3 32bit (Drawscore = 0):

1. = (0.00): 65...Rc3+ 66.Kxf2 Rf3+ 67.Kg1 Rg3+ 68.Kh2 Rg2+ 69.Kh1 Rg1+ 70.Kxg1
2. = (0.00): 65...Rf3+ 66.Kxf3 Rc3+ 67.Ke4 Re3+ 68.Kd4 Re4+ 69.Kd5 Rxe5+ 70.Kd6 Re6+ 71.Kd7 Rd6+ 72.Kc8 Rd8+ 73.Kc7 Rc8+ 74.Kb6 Rc6+ 75.Ka5 Rc5+ 76.Ka4 Rc4+ 77.Kb5 Rc5+ 78.Kxc5
3. = (0.00): 65...Rg2+ 66.Kf3 Rgf2+ 67.Ke4 Rfe2+ 68.Kd5 Rxe5+ 69.Kd4 Rc4+ 70.Kxc4 Rc5+ 71.Kb4 Rb5+ 72.Kc3 Rc5+ 73.Kd3 Rd5+ 74.Kc2 Rc5+ 75.Kb3 Rb5+ 76.Ka4 Rb4+ 77.Ka3 Rb3+ 78.Kxb3

Coming to a 0.00 eval in time, may have saved 0.5 points for Komodo 4 in the tournament, because it looks like resigning was on. Playing Rg2+ with a big eval in favour of White might have led to resignation (depending on the resign threshold).
Regards, Mike
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