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CharlesSullivan
Member since May-05-08 · Last seen Dec-12-18
I had a chess analysis website (TrueChess.com) for about 10 years until 2017. Now, with improved software (Stockfish 9) and improved hardware (AMD Threadripper 1950X with 16 cores and 32 GB of memory), some of those chess positions that were inpenetrable 10 years ago can be solved (maybe).

   CharlesSullivan has kibitzed 221 times to chessgames   [more...]
   Dec-09-18 Alekhine vs Capablanca, 1927
 
CharlesSullivan: Note: I am submitting a second correction slip -- Black played 44...Qe8 in this game, NOT 44...Qf8. At least, that is what Skinner & Verhoeven (Alexander Alekhine's Chess Games, 1902-1946), Alexander Alekhine (My Best Games of Chess 1924-1937; On the Road to the World ...
 
   Nov-15-18 Alekhine vs Capablanca, 1927
 
CharlesSullivan: < 36...a6 > Alekhine claims that 36...b5 "would hardly be satisfactory for Black." But Capablanca's 36...a6 is an error that White could have exploited. Necessary was, in fact, 36...b5! <+0.07, depth 58, 2 hour search>. [DIAGRAM] and the Black's passed b-pawn ...
 
   Nov-03-18 Capablanca vs Alekhine, 1927
 
CharlesSullivan: < Mystery of the Unpunished Blunder, [Conclusion] > [D] The main line is 37.Nc5! Rb8 <+5.30, depth 65, 15 hours> 38.Rc6 Qe8 39.Nxe6!! [DIAGRAM] 39...fxe6 40.Rxe6 Qf7 41.Rxg6+ Bg7 42.Rg5 Rb6 43.h4! <+7.19> [DIAGRAM] Black's defenses are no match for ...
 
   Oct-17-18 AlphaZero vs Stockfish, 2017 (replies)
 
CharlesSullivan: < Stockfish's losing move was 34...Rd8 > [ The following analysis was posted on the Rybka Forum on Dec. 24, 2017 ] : Please note that Black has a draw as late as move 34. After an overnight search of 65 plies, Stockfish8 (with endgame tables) rates 34...a6 as ...
 
   Oct-17-18 Spassky vs Fischer, 1972 (replies)
 
CharlesSullivan: <Howard: ... how many forced wins did Bobby miss?> After Spassky's blunder at move 31, Fischer maintained a winning position until he missed 38...Rd1. So I would say that Bobby missed only 1 forced win. If your question is, How many (ill-defined) "better" moves ...
 
   Sep-27-18 Fischer vs Spassky, 1972 (replies)
 
CharlesSullivan: <Tiggler> < I would appreciate a bit more information on the total effort involved in his analysis, and about his hardware. > Tiggler, thanks for your comment. I have an AMD 16-core Threadripper 1950X with 32 GB of memory and all the important 6-man Syzygy ...
 
   Sep-26-18 Fischer vs Spassky, 1972 (replies)
 
CharlesSullivan: < Further Errors, But -- No Harm, No Foul > After Fischer escaped retribution for his 20.Bf4 blunder, he thought for 8 minutes and landed in the soup again with another weak move: 21.Bb5 lost a pawn to 21...Qxb2 22.Bxc6 Nc3! Stockfish says that White should have ...
 
   Sep-23-18 Spassky vs Fischer, 1972 (replies)
 
CharlesSullivan: < Addendum: Was 36...Red8 also winning? > At move 36, where Black played 36...b5 (which would have allowed White to equalize with 37.c4) [see analysis above] , I first looked at 36...Red8 [DIAGRAM] because Kasparov said, "It would have been better to play ...
 
   Sep-14-18 Fischer vs Spassky, 1972 (replies)
 
CharlesSullivan: Robert Byrne called White's 35th move "careless," and he's right -- best is 35.Nxc5 and the game is still equal. Byrne then pointed out the strongest game continuation for Black was 35...Nce4! He continued, "I see nothing better for Bobby than 36.Ra1 Rc8 37.Bxe4 Nxe4 ...
 
   Sep-12-18 Spassky vs Fischer, 1972 (replies)
 
CharlesSullivan: The complexity of this game has been underappreciated. Spassky's 12.Bh4 started him on the road to a lost game. He should have played 12.Bxf6 with approximately equal chances. Spassky would have had better chances with 18.Qf4 Rxc8 19.Qxh4, although after 19...Qa4 ...
 
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