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Member since May-05-08 · Last seen May-04-22
I had a chess analysis website ( 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 225 times to chessgames   [more...]
   May-05-21 Fischer vs Stein, 1967 (replies)
CharlesSullivan: Sad to say, there is an obituary for Howard Sample of Toledo, Ohio, dated 13 August 2020. He was only 60 years old. RIP
   Feb-21-21 O Bernstein vs Nimzowitsch, 1914 (replies)
CharlesSullivan: This is a very famous game: Chernev called it the "most brilliant drawn game ever played"; Martin Beheim called it "almost the ideal game of chess." Modern computers show that Black needed to play 25...f4 because White had a win at move 28 that has been overlooked for 107 ...
   Aug-12-20 O Ulvestad vs F Reinfeld, 1939 (replies)
CharlesSullivan: <Benzol>: Internet source says "Showpiece of the Tournament."
   Aug-04-20 Alekhine vs Capablanca, 1927 (replies)
CharlesSullivan: <Albion1959>: Stockfish-11 creates this in response to 51...Rc3+: 52.Ke2 Bg3 53.Rd5+ Ke8 54.f5 Rc1 55.Rd8+ Kf7 56.Rd7+ Ke8 57.Rh7 h4 58.Bd4 Re1+ 59.Kd3 Bf4 60.Kc4 Kf8 61.f6 Rc1+ 62.Kd5 and it is mate-in-14.
   Dec-09-18 Alekhine vs Capablanca, 1927 (replies)
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-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 ...
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