The Base Top 5 HEXA tournament

Hugo · Post by **Hugo** » Sun Jul 31, 2011 9:13 am

Hi all computerchess enthusiasts

I am playing a round robin (25rds) engine tournament with the top 5 .
most intresting might be:
each engine 6 cpu
ponder on
timecontrol 20+5

expected tournament time 8 - 10 days.
More informations and link for live transmission can be found here:
http://www.clemens-keck.de/base.htm

games with too high score when out of book will be repeated and possition will be deleted in book.

enjoy

best regards, Clemens Keck

beram · Post by **beram** » Sun Jul 31, 2011 9:38 am

Hugo wrote:Hi all computerchess enthusiasts

I am playing a round robin (25rds) engine tournament with the top 5 .
most intresting might be:
each engine 6 cpu
ponder on
timecontrol 20+5

expected tournament time 8 - 10 days.
More informations and link for live transmission can be found here:
http://www.clemens-keck.de/base.htm

games with too high score when out of book will be repeated and possition will be deleted in book.

enjoy

best regards, Clemens Keck

Thx for playing and sharing this nice tournament

* isn't the current game Houdini - Stockfish an example of too high a score right out of the opening ? IMO it is

grts Bram

Hugo · Post by **Hugo** » Sun Jul 31, 2011 11:01 am

Hello Bram

yes this game will be repeated during the tournament. So far I got 2 games with clear book loss in 27 games. I tried to avoid this by using the book before in 200 test games. But it is hard to avoid at all.

Kind regards, Clemens

Hugo · Post by **Hugo** » Mon Aug 01, 2011 8:11 am

Hi All

the tournament is running fine. Verry intresting games so far. Wide range of openings.
3 Games must be repeated at the end .
Houdini - Stockfish 1-0 (book fault)
Critter - Rybka 1-0 (book fault)
Houdini - Rybka 0-1 (chessbase gui bug after 255 moves)

here is a nice game A81 dutch defense:
[Event "top5-20+5"]
[Site "Microsoft"]
[Date "2011.07.31"]
[Round "4.5"]
[White "Critter 1.2 64-bit SSE4 x6"]
[Black "Stockfish 2.1.1 JA 64bit x6"]
[Result "0-1"]
[ECO "A81"]
[Annotator "0.38;0.52"]
[PlyCount "336"]
[EventDate "2011.07.30"]
[TimeControl "1200+5"]

{Intel(R) Xeon(R) CPU X5680 @ 3.33GHz 3329 MHz W=25.9 plies; 9.609kN/s; 12mvs2.
ctg B=33.6 plies; 7.971kN/s; 12mvs2.ctg} 1. d4 {0.00/0 0} f5 {0.00/0 0} 2. g3 {
0.00/0 0} Nf6 {0.00/0 0} 3. Bg2 {0.00/0 0} g6 {0.00/0 0} 4. Nf3 {0.00/0 0} Bg7
{0.52/25 28} 5. O-O {0.00/0 0} O-O {0.56/25 42} 6. b3 {0.00/0 0} d6 {0.00/0 0}
7. Bb2 {0.00/0 0} Ng4 {0.00/0 0} 8. c4 {0.38/22 66} Na6 {0.48/25 31 (e5)} 9.
Nc3 {0.33/21 52 (Dd2)} c6 {0.36/26 103} 10. e4 {0.32/21 35 (h3)} e5 {0.32/25 46
} 11. exf5 {0.26/21 48} gxf5 {0.28/27 1} 12. h3 {0.35/22 33} Nh6 {0.20/27 65}
13. Qd2 {0.31/22 17 (h4)} e4 {0.20/25 51 (Sf7)} 14. Ne1 {0.34/20 46} d5 {0.08/
26 0 (Sf7)} 15. Ne2 {0.34/20 43} Nf7 {0.08/25 0 (dxc4)} 16. Nc2 {0.34/20 38}
Nc7 {0.00/24 0} 17. Rad1 {0.30/20 37 (La3)} b5 {0.00/25 41 (Lh6)} 18. cxb5 {0.
22/20 40} Nxb5 {-0.08/25 0} 19. Nf4 {0.15/21 89} Bh6 {-0.28/27 0 (a5)} 20. a4 {
0.10/19 36} Nc7 {-0.40/25 0 (Sbd6)} 21. Bc1 {0.02/20 23 (La3)} Ne6 {-0.56/26
53 (Lxf4)} 22. Nxe6 {0.00/21 34} Bxe6 {-0.56/26 27} 23. Qc3 {0.00/21 2} Bd7 {
-0.44/26 82 (Tc8)} 24. Bxh6 {-0.02/19 33} Nxh6 {-0.52/27 0} 25. Rd2 {-0.10/19
44 (f3)} Qf6 {-0.64/26 53} 26. f3 {-0.16/22 0} Qd6 {-0.48/26 30} 27. Kh2 {-0.
16/21 0} Rab8 {-0.56/25 89} 28. Rdf2 {-0.16/22 0} Kg7 {-0.76/25 52 (Tf7)} 29.
Ne3 {-0.19/19 28} Qa3 {-0.60/26 19} 30. Rb1 {-0.22/21 11} Qb4 {-0.84/27 22} 31.
Qxb4 {-0.27/21 5 (Db2)} Rxb4 {-0.84/23 2} 32. Nc2 {-0.28/23 26} Rbb8 {-0.84/26
21} 33. b4 {-0.22/21 8} Nf7 {-0.56/25 33} 34. fxe4 {-0.14/23 0} fxe4 {-0.76/26
42} 35. Rbf1 {-0.16/25 0} Be6 {-0.72/26 27 (h5)} 36. h4 {-0.14/24 29 (g4)} Nd6
{-0.44/32 23} 37. Rxf8 {-0.14/27 6} Rxf8 {-0.44/34 0} 38. Rxf8 {-0.14/27 23}
Kxf8 {-0.44/38 0} 39. Ne3 {-0.14/27 28} Kg7 {-0.08/33 42 (Sc4)} 40. Kg1 {0.00/
27 26} Kf7 {0.00/35 1 (Sf5)} 41. g4 {0.07/25 23} Ke7 {0.00/36 11 (Sc8)} 42. Kf2
{0.10/24 16} Nb7 {0.00/34 5 (Sc8)} 43. Bf1 {0.19/24 21} Nd8 {0.00/36 12} 44.
Be2 {0.19/24 12 (g5)} Bd7 {0.00/35 32 (h6)} 45. Ng2 {0.25/24 24 (a5)} Ne6 {0.
00/34 34} 46. Ke3 {0.25/26 0} Ng7 {0.00/36 20 (h6)} 47. Nf4 {0.25/25 22} Be8 {
0.00/34 0 (Kd6)} 48. Kd2 {0.25/24 19 (Ld1)} Bf7 {0.04/33 27 (Ld7)} 49. Bd1 {0.
23/24 21} h6 {0.04/36 0 (Le8)} 50. Ne2 {0.21/24 29 (Ke3)} Be6 {0.00/37 18 (h5)}
51. Ng3 {0.20/25 17 (Sf4)} Kf6 {0.00/40 21 (Se8)} 52. Ke3 {0.15/25 16} Bd7 {0.
00/42 4} 53. Kf2 {0.10/25 14 (Le2)} Ne6 {0.00/35 17 (Kf7)} 54. Nh5+ {0.20/26
17 (Ke3)} Kf7 {0.00/36 17} 55. Ke3 {0.20/28 2} Nc7 {0.00/38 21} 56. Nf4 {0.20/
25 0} Kf6 {0.00/41 24} 57. Be2 {0.20/26 0 (Sh5+)} Bc8 {0.00/37 23} 58. Kd2 {0.
18/25 0 (Sh5+)} Bd7 {0.00/38 14 (Kf7)} 59. Kc2 {0.14/25 20 (Ke3)} Be6 {0.00/37
45 (Lc8)} 60. Nh5+ {0.14/26 22 (Kd2)} Ke7 {0.00/38 14 (Kf7)} 61. Bd1 {0.14/26
17 (Kd2)} Ne8 {0.00/32 14 (Kf7)} 62. Nf4 {0.14/25 18 (Kd2)} Kf6 {0.00/36 12
(Kf7)} 63. Kc3 {0.15/25 15 (Kd2)} Nc7 {0.00/42 22} 64. Nh5+ {0.14/27 0} Ke7 {
0.00/42 16 (Kf7)} 65. Be2 {0.14/26 11 (Kc2)} Bc8 {0.00/34 29 (Kf7)} 66. Nf4 {
0.14/26 15} Kf6 {0.00/42 0 (Kf7)} 67. Kb2 {0.14/26 16 (Kd2)} Bb7 {0.00/38 11
(Ld7)} 68. Kb3 {0.14/27 16 (Kc3)} Kf7 {-300.02/36 27} 69. Kc2 {0.14/27 0 (g5)}
Kf6 {0.00/38 19 (Kg7)} 70. Kd2 {0.14/26 13 (Kc3)} Bc8 {0.00/36 7} 71. Ke3 {0.
14/25 9} Bd7 {0.00/39 0} 72. Kf2 {0.14/26 15 (Sh5+)} Be6 {0.00/31 11 (Lc8)} 73.
Nh5+ {0.14/25 10 (Ke3)} Kf7 {0.00/35 10 (Ke7)} 74. Ke1 {0.14/25 15 (Ke3)} Na8 {
0.00/31 7 (Kg6)} 75. Nf4 {0.14/24 14 (a5)} Bd7 {0.00/27 5 (Sb6)} 76. Kd2 {0.14/
24 10} Nc7 {0.00/34 0 (Le8)} 77. Kc3 {0.12/24 16 (g5)} Kf6 {0.00/38 6} 78. Kb2
{0.13/26 7 (Kc2)} Ke7 {0.00/34 6 (Kf7)} 79. Kc1 {0.12/25 16 (Kc2)} Kf6 {0.00/
39 5 (Kf7)} 80. Bd1 {0.12/24 11 (Kd2)} Kf7 {0.00/30 6 (Le6)} 81. Kb2 {0.12/25
32 (Kd2)} Kf6 {0.00/36 5 (Kg7)} 82. Kb3 {0.12/25 11 (Le2)} Ke7 {0.00/34 5 (Sa8)
} 83. Kc3 {0.12/25 9 (Le2)} Kf6 {0.00/39 8} 84. Kb2 {0.12/25 2 (Kb3)} Ke7 {0.
00/34 4 (Sa8)} 85. Kc2 {0.12/25 8 (Kc3)} Kf6 {0.00/34 4} 86. Kd2 {0.12/25 7
(Le2)} Kg7 {0.00/36 5 (Sa8)} 87. Nh5+ {0.12/25 9 (Le2)} Kf7 {0.00/32 7} 88. Be2
{0.12/26 4} Ke7 {0.00/38 0 (Kf8)} 89. Ke3 {0.12/26 10 (Sf4)} Be8 {0.08/31 10}
90. Nf4 {0.12/26 1 (Sg3)} Kf6 {0.00/35 6 (Kf7)} 91. Kf2 {0.12/25 7 (Lf1)} Bd7 {
0.00/36 5} 92. a5 {0.12/24 18 (Ke3)} Be8 {0.00/36 5 (Kg7)} 93. Ke3 {0.12/27 8}
Bg6 {0.00/40 0 (Kg7)} 94. Bf1 {0.12/25 10 (Kf2)} Be8 {0.00/37 10} 95. Kd2 {0.
12/27 0 (Le2)} Bd7 {0.00/35 3 (Kg7)} 96. Be2 {0.12/25 8} Be8 {0.00/39 0 (Lc8)}
97. Kd1 {0.12/25 10 (Ke3)} Ke7 {0.00/39 8 (Lf7)} 98. Kc1 {0.12/24 9 (Kd2)} Kf6
{0.00/34 5 (Lf7)} 99. Kc2 {0.12/26 9 (Kd2)} Ke7 {0.00/40 6 (Lf7)} 100. Kb2 {0.
12/25 6 (Kd2)} Kd6 {0.00/38 6 (Kf7)} 101. Kc3 {0.12/26 6 (Kc2)} Ke7 {0.00/41 5}
102. Kc2 {0.12/26 2 (Kd2)} Kf6 {0.00/40 5} 103. Kd2 {0.12/25 1} Bd7 {0.00/39 6
(Lf7)} 104. Kc3 {0.11/24 11 (Ke3)} Bc8 {0.00/35 6} 105. Kc2 {0.11/24 3 (Kd2)}
Kf7 {0.00/34 4 (a6)} 106. Kd1 {0.11/24 16 (Kd2)} Kf6 {0.00/36 5 (Lb7)} 107. Ke1
{0.11/24 7 (Kc2)} Kf7 {0.00/35 4} 108. Kd2 {0.10/24 2} Bb7 {0.00/33 2 (Kf6)}
109. Kd1 {0.10/24 10 (Ke3)} Kf6 {0.00/35 6} 110. Kc2 {0.10/25 3 (Kd2)} Kf7 {0.
00/35 5} 111. Kd2 {0.09/24 5} Bc8 {0.00/39 1 (Kg7)} 112. Kc1 {0.09/24 9 (Ke3)}
Kf6 {0.00/36 5 (Ld7)} 113. Kb2 {0.02/24 8 (Kd2)} Kf7 {0.00/36 11 (Ld7)} 114.
Kb3 {0.00/24 9 (Kc3)} Kg7 {0.00/36 8} 115. Ka3 {0.00/25 1 (Kc3)} Kf7 {0.00/33
4 (Kf6)} 116. Kb2 {0.02/23 8 (Kb3)} Kf6 {0.00/37 7 (Ld7)} 117. Kc3 {0.02/24 9
(Kc2)} Be6 {0.00/37 3} 118. Kc2 {0.05/25 5 (Kd2)} Kf7 {0.00/35 4 (Kg7)} 119.
Kd1 {0.05/25 8 (Kd2)} Kf6 {0.00/39 6 (Lc8)} 120. Ke1 {0.02/25 5 (Kc2)} Kf7 {0.
00/39 4 (Ld7)} 121. Kf1 {0.02/25 8 (Kd2)} Bc8 {0.00/36 5} 122. Kf2 {0.02/25 3}
Kf6 {0.00/35 3 (Lb7)} 123. Nh5+ {0.00/24 7 (Ke3)} Ke7 {0.00/37 5 (Kf7)} 124.
Ke3 {0.00/24 8} Ba6 {0.00/34 0} 125. Bd1 {0.00/25 8} Kf7 {0.00/34 5} 126. Ng3 {
0.00/25 3} Bc8 {0.00/35 6 (Kf6)} 127. Be2 {0.00/25 8} Ke7 {0.00/38 0} 128. Kf4
{0.00/25 5 (Sh5)} Kd6 {0.00/35 6 (Se6+)} 129. Nh5 {0.00/23 8 (Ke3)} Bd7 {0.00/
33 6 (Ke6)} 130. Ng7 {0.00/24 5 (Ke3)} Bc8 {0.00/35 7} 131. g5 {0.00/25 0 (Sh5)
} hxg5+ {0.00/28 7} 132. Kxg5 {0.00/24 1} Ke7 {0.00/31 6} 133. Kf4 {-0.07/25 2}
Kf7 {0.00/32 4} 134. Nf5 {-0.07/24 4 (Sh5)} Bxf5 {0.00/29 6} 135. Kxf5 {-300.
02/24 4} Ke7 {0.00/34 3 (Sb5)} 136. Ke5 {-300.02/23 10 (Lf1)} Nb5 {0.00/35 7}
137. Bxb5 {-0.18/23 2 (Lf1)} cxb5 {-3.35/23 0} 138. Kf4 {-1.75/25 3} Kf6 {-15.
07/33 3 (Kf7)} 139. Kg4 {-4.40/34 10 (a6)} Kg6 {-89.24/33 9 (Kg7)} 140. a6 {
-300.02/35 9} Kh6 {-103.18/41 0} 141. Kg3 {-8.80/33 8 (Kh3)} Kh5 {-101.87/31 6}
142. Kh3 {-300.02/32 2 (Kf4)} e3 {-300.02/12 0} 143. Kg3 {-300.02/31 8} e2 {
-#12/45 0} 144. Kf2 {-8.76/29 0} Kxh4 {-#12/40 0} 145. Kxe2 {-300.02/28 9} Kg4
{-#11/49 0} 146. Ke3 {-300.02/27 8} Kg3 {-#11/49 0} 147. Kd2 {-10.29/25 7 (Ke2)
} Kf4 {-300.02/8 0} 148. Kd3 {-300.02/28 7} Kf3 {-#10/49 0} 149. Kc2 {-15.15/
25 0 (Kd2)} Ke2 {-300.02/9 0 (Ke3)} 150. Kb2 {-15.22/24 8 (Kb1)} Kd2 {-#9/5 0
(Kd3)} 151. Kb1 {-300.02/25 8} Kd3 {-#9/40 0 (Kc3)} 152. Kc1 {-16.36/23 7} Kxd4
{-#8/41 0} 153. Kd2 {-300.02/21 7} Kc4 {-#8/42 0} 154. Kc2 {-17.09/18 7 (Ke3)}
d4 {-300.02/7 0} 155. Kd2 {-#9/21 5 (Kb1)} Kxb4 {-#7/19 0} 156. Kd3 {-#6/0 0}
Kc5 {-#6/0 0} 157. Kc2 {-#6/0 0} Kc4 {-#6/0 0} 158. Kb1 {-#5/0 0} b4 {-#5/0 0}
159. Kc1 {-#5/0 0} Kc3 {-#5/0 0} 160. Kd1 {-#4/0 0} b3 {-#4/0 0} 161. Ke1 {-#4/
0 0} b2 {-#4/0 0} 162. Kf2 {-#3/0 0} b1=Q {-#3/9 0} 163. Kf3 {-#3/52 6 (Kg2)}
d3 {-#3/8 0} 164. Kf4 {-#2/56 1} d2 {-#2/68 0} 165. Ke5 {-#2/56 0 (Kf3)} d1=Q {
-#2/6 0} 166. Kf4 {-#1/56 0} Qd4+ {-#1/100 0} 167. Kg3 {-#1/56 0} Qbg1+ {-#1/
100 0} 168. Kf3 {#0/56 0 (Kh3)} Qgf2# {#0/5 0} 0-1

long way for black, but nice win.

Regards, Clemens Keck

ernest · Post by **ernest** » Tue Aug 02, 2011 4:56 pm

Hugo wrote:long way for black, but nice win.

Well, one big blunder by Critter, and I checked, Critter really likes - for a long time - that losing move 137. Bxb5???

By the way, Clemens, how do you make sure, in that tournament with an uneven number of participants (5), that the same opening is used for A (White)- B (Black) and then A (Black)- B (White)?

beachknight · Post by **beachknight** » Tue Aug 02, 2011 8:22 pm

ernest wrote:
Hugo wrote:long way for black, but nice win.
Well, one big blunder by Critter, and I checked, Critter really likes - for a long time - that losing move 137. Bxb5???

I was also courios. A quick analysis with Fritz 12 below.

Bxb5 was the first suggestion of Fritz 12 some time. F12 realizes quickly
that this move is loosing (eval -5 pawns) and gives following alternatives:

8/p3k3/2p5/Pn1pK3/1P1Pp2P/8/4B3/8 w - - 0 1

Analysis by Fritz 12:

1. = (-0.24): 137.Bf1 Nc3 138.Kf4 Kf6 139.Ke3 Kg6 140.Ba6 Na2 141.Be2 Nxb4 142.Kd2 Kf5 143.h5 c5 144.h6 Kg6 145.dxc5 Kxh6 146.Bb5 a6 147.Kc3 Na2+
2. -/+ (-0.94): 137.h5 Kf7 138.Bg4 Kg7 139.Be2 Kh6 140.Bg4 Nc3 141.Kd6 e3 142.Kxc6 Kg5 143.Bf3 Kf4 144.h6 Kxf3 145.h7 e2 146.h8Q e1Q 147.Qf6+ Ke3 148.Qe7+ Kd2 149.Qxe1+ Kxe1 150.Kb7 Nb5 151.Ka6

(, 02.08.2011)

Whether Bf1 is the only drawing move, is the subject of deeper analysis.

Hugo · Post by **Hugo** » Tue Aug 02, 2011 11:05 pm

Hello Ernest

I do not play same opening with white and with black on same opponents.
This is a tournament play, and no ratinglist play. At the end, each engine has played 100 games and it looks for a wide range of openings. So it is "fair" enough (to all participants.
I looked at the anotations, and in 93 games I found only 4 games yet, which must be repeated manually at the end of the tour(book fault, gui fault).

regards, Clemens

Hugo · Post by **Hugo** » Tue Aug 02, 2011 11:11 pm

Hi all

the shortest win in the tournament yet:
46 Moves to mate, only 3(unusual) book moves

I have a "feeling" , that Stockfish might do better in this tour with a higher Split Depth , maybe SD5 or even higher. But I do not change during the tour.

[Event "top5-20+5"]
[Site "Microsoft"]
[Date "2011.08.02"]
[Round "9.3"]
[White "Houdini 1.5a x64 x6."]
[Black "Stockfish 2.1.1 JA 64bit x6"]
[Result "1-0"]
[ECO "A45"]
[Annotator "0.09;-0.04"]
[PlyCount "91"]
[EventDate "2011.07.30"]
[EventType "tourn"]
[TimeControl "1200+5"]

{Intel(R) Xeon(R) CPU X5680 @ 3.33GHz 3329 MHz W=22.1 plies; 14. 460kN/s;
12mvs2.ctg B=29.9 plies; 8.643kN/s; 12mvs2.ctg} 1. d4 {0.00/0 0} Nf6 {0.00/0 0}
2. Bg5 {0.00/0 0} c5 {-0.04/23 23} 3. e3 {(Sc3) 0.09/22 39} Qb6 {
(d5) -0.48/24 29} 4. Nc3 {(Sf3) 0.11/21 28} Qxb2 {-0.80/25 30} 5. Nge2 {
-0.05/23 21} cxd4 {(Da3) -0.56/26 35} 6. exd4 {0.01/22 29} Qa3 {
(e6) -0.44/27 23} 7. Rb1 {-0.06/22 49} e6 {-0.80/26 1} 8. Bxf6 {
(Sb5) -0.05/20 43} gxf6 {-1.09/19 2} 9. g3 {(Dd2) -0.13/22 85} Bb4 {
(d5) -0.88/25 32} 10. Rb3 {0.10/24 27} Qa5 {-0.84/27 30} 11. d5 {0.06/24 4} e5
{(Sa6) -0.68/26 38} 12. a3 {(Dd2) 0.14/23 24} Bxa3 {(Lxc3+) -0.48/24 56} 13.
Bh3 {(d6) 0.29/20 24} Na6 {(h5) 0.00/27 53} 14. d6 {(0-0) 0.72/21 30} Nc5 {
0.28/24 36} 15. Rb5 {0.91/22 0} Qa6 {0.20/28 60} 16. O-O {0.85/23 0} Kf8 {
(Sa4) 0.20/28 78} 17. f4 {(Dd5) 1.96/20 25} Ne4 {2.22/23 48} 18. fxe5 {
2.85/21 0} b6 {(Dc6) 2.82/25 62} 19. Bg2 {7.06/19 34} Bb7 {-300.02/23 0} 20.
Bxe4 {6.91/18 2} Bxe4 {5.25/23 33} 21. Nd4 {(Txf6) 7.69/22 0} Bc5 {
(Db7) 4.08/24 32} 22. Rxc5 {(e6) 8.24/21 9} bxc5 {10.18/24 37} 23. Qh5 {
9.70/23 0} h6 {11.43/25 26} 24. Nxe4 {11.35/23 46} Qc4 {12.66/27 32} 25. Nxf6 {
12.13/24 0} Qxd4+ {13.53/26 22} 26. Rf2 {(Kg2) 12.98/24 24} Rd8 {10.70/24 32}
27. Qf5 {13.27/25 0} Qc4 {(Da1+) 14.50/27 41} 28. Nh7+ {14.64/21 25} Kg8 {
20.96/27 6} 29. Rf4 {15.46/22 0} Rxh7 {(Dxf4) 32.40/29 53} 30. Rxc4 {
14.43/22 27} Rg7 {73.12/29 42} 31. Rxc5 {14.58/22 0} Rg6 {93.05/33 66} 32. Rc7
{16.46/25 0} Re6 {93.05/32 59} 33. Qg4+ {17.71/24 0} Kh7 {(Tg6) 97.94/28 17}
34. Qh4 {18.77/20 6} Rb8 {(Tee8) 129.44/29 24} 35. Rxd7 {30.41/22 7} Kg7 {
124.68/25 44} 36. Qg4+ {(Dc4) #14/29 0} Rg6 {132.79/25 46} 37. Qf5 {#13/29 0}
Rf8 {#12/17 1} 38. Re7 {(Txa7) #10/29 31} Kg8 {(Tg5) #8/23 41} 39. d7 {#8/25 7}
Rg5 {(Kh8) #7/29 0} 40. Qf4 {#7/23 1} Kh8 {(Tg7) #6/24 0} 41. Qf6+ {
(Te8) #6/21 0} Rg7 {(Kg8) #5/9 0} 42. Qxh6+ {(Te8) #5/19 0} Kg8 {#4/8 0} 43.
Re8 {#4/21 0} f6 {(f5) #3/100 0} 44. Rxf8+ {#3/15 0} Kxf8 {#2/100 0} 45. d8=Q+
{#2/13 0} Kf7 {#1/100 0} 46. Qhxf6# {#1/53 0} 1-0

Regards, Clemens Keck

rvida · Post by **rvida** » Wed Aug 03, 2011 1:13 am

ernest wrote:
Hugo wrote:long way for black, but nice win.
Well, one big blunder by Critter, and I checked, Critter really likes - for a long time - that losing move 137. Bxb5???

Strange.. I can not reproduce this. But look at the evaluations in the PGN:

Code: Select all

134. Nf5 {-0.07/24 4 (Sh5)} Bxf5 {0.00/29 6} 135. Kxf5 {-300.
02/24 4} Ke7 {0.00/34 3 (Sb5)} 136. Ke5 {-300.02/23 10 (Lf1)} Nb5 {0.00/35 7}
137. Bxb5 {-0.18/23 2 (Lf1)} cxb5 {-3.35/23 0} 138. Kf4 {-1.75/25 3} Kf6 {-15.
07/33 3 (Kf7)}

something weird happened at move 135 - white's eval jumped from -0.07 to -300 ???
Right now I am too tired to analyse, but tomorrow I will go through the critical moves. But I suspect this is some nasty bug showing up

ernest · Post by **ernest** » Wed Aug 03, 2011 9:00 pm

rvida wrote:Strange.. I can not reproduce this.

Hi Richard,
In infinite analysis (tried 2 threads and 1 thread, PGN of whole game or epd of the position), everytime Critter stays a long time with 137. Bxb5?

Code: Select all

8/p3k3/2p5/Pn1pK3/1P1Pp2P/8/4B3/8 w - - 0 1
Analysis by Critter 1.2 32-bit gtb:
137.Bxb5 cxb5 138.Kf4 Kf6 139.h5 a6 140.Ke3 Kg5 
  =  (0.07)   Depth: 6/12   00:00:00  2kN
137.Bxb5 cxb5 138.Kf4 Kf6 139.h5 a6 140.Kg4 Kf7 141.Kf4 Kf6 
  =  (0.00)   Depth: 7/12   00:00:00  3kN
............
137.Bxb5 cxb5 138.Kf4 a6 139.Kg3 Kf6 140.Kf4 Kf7 141.Kg3 Kg7 142.Kg4 Kg6 143.Kf4 Kh5 144.Kg3 Kh6 145.Kg4 Kh7 146.Kf4 Kg6 147.Kg4 Kg7 148.Kg3 Kg8 149.Kg4 Kh7 
  =  (-0.17)   Depth: 24/55   00:00:41  88692kN, tb=36833
137.Bg4 Nc3 138.h5 e3 139.h6 Kf7 140.h7 Kg7 141.Kd6 Kxh7 142.Kxc6 Kh6 143.b5 Kg5 144.Bf3 Kf4 145.Bh5 Kg5 146.Bf3 
  =  (-0.08 !)   Depth: 25/55   00:04:07  556mN, tb=293898
137.Bg4 Nc3 138.h5 e3 139.h6 Kf7 140.h7 Kg7 141.Kd6 Kxh7 142.Kxc6 Kh6 143.b5 Kg5 144.Bf3 Kf4 145.Bh5 Kg5 146.Bf3 
  =  (0.00 !)   Depth: 25/55   00:05:41  792mN, tb=399982

The Base Top 5 HEXA tournament

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