Author: Austin A. Biberink
Date: 14:42:08 12/31/05
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On December 31, 2005 at 17:02:13, Jouni Uski wrote: >I played 60/5 level match from Sune's positions: > >1 Rybka 1.0 Beta 32-bit 0½½0½½½11½½½01100110½0½010½½½½1½½½111½½0 20.5/40 >2 Fritz 9 1½½1½½½00½½½10011001½1½101½½½½0½½½000½½1 19.5/40 I'm not very surprised that this was possible, despite the known endgame issues. Watch this, from a blitz game at 1.2 GHz, Arena GUI (there was no tbs. support whatsoever in this game): [D]4R3/5ppk/7p/8/8/3K4/8/8 b - - 0 63 Not an easy task! :) [Event "Rybka 1b-King 3.23"] [Site "AthlonXP"] [Date "2005.12.29"] [Round "5"] [White "Rybka v1.0 Beta.w32"] [Black "The King 3.23"] [Result "1-0"] [ECO "A06"] [SetUp "1"] [FEN "4R3/5ppk/7p/8/8/3K4/8/8 b - - 0 63"] 63... g6 64. Ke4 h5 65. Ke5 Kg7 66. Rb8 f6+ 67. Ke6 h4 68. Rb7+ Kh6 69. Kxf6 Kh5 70. Rb5+ Kg4 71. Rb4+ Kg3 72. Kg5 h3 73. Rb3+ Kg2 74. Kg4 h2 75. Rb2+ Kg1 76. Kg3 h1=N+ 77. Kf3 g5 78. Rd2 g4+ 79. Kxg4 Nf2+ 80. Kf3 Nh3 81. Kg3 Kf1 82. Kxh3 Ke1 83. Rg2 Kf1 84. Kg3 Ke1 85. Kf4 Kf1 86. Rg5 Ke2 87. Rd5 Kf2 88. Rd2+ Ke1 89. Ke3 Kf1 90. Kf3 Kg1 91. Rd1+ Kh2 92. Ra1 Kh3 93. Rh1# 1-0 For example, Rybka avoided 71./72./73.Kxg6??= with a KR-KP draw. 76...h1=N+ :)) King found the best defense, but the underpromotion didn't confuse Rybka at all. Happy New Year! Austin
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