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Sergash
Member since Aug-12-09 · Last seen Nov-28-21
Living in Montréal, Québec.

   Sergash has kibitzed 379 times to chessgames   [more...]
   Sep-12-21 O Hole vs Carlsen, 2002
 
Sergash: [To answer <Dionysius1> : 8.a2-a3 was possibly played with the intention of pushing b2-b4, but when Carlsen replied with 8...a7-a5 to prevent it, Hole had to adapt and went for 9.a3-a4, in his turn preventing b7-b5. Action-reaction, threat-block. :?) ] <20...Be5-f6 ...
 
   Sep-05-21 Carlsen vs K Trygstad, 2002
 
Sergash: <28...h6xg5 ⩲> 28...Qc7-d8! = Stockfish 14 AVX2 64 bits. <29.Qd2xg5 => 29.Bh4xg5! ⩲ Stockfish 14 AVX2 64 bits. <29...c5-c4?? 30.f3-f4! +-> Losing the game! 29...Re8-e5▢ 30.Qg5-g3 Kg8-h7▢ 31.Bh4-g5 Re5xg5▢ 32.Qg3xg5 Bg7-d4+▢ ...
 
   Aug-28-21 Carlsen vs Aarland, 2002
 
Sergash: <35.Be1-c3 Be7xh4 36.Bc3xe5 Rd8-d2 37.a3-a4! Bh4-d8 +-> 35.h4-h5! +- Stockfish 14 AVX2 64 bits. <38.Rc6-d6! Rd2xd6 39.Be5xd6 Kf7-e6 40.Bd6-f8 +-> Forcing the exchange of the rooks is understandable and very human. There is also is 38.Ka2-a3!? +- with an easy win. ...
 
   Mar-13-21 Capablanca vs A Fiol, 1901
 
Sergash: <Position after 39.Qa7xf2> [DIAGRAM] <39...c6xb5?? 40.Ba6xb5▢ Bd5xb3 41.Qf2-e3 Qh3-g2+ 42.Ke2-e1▢ Qg2-h1+ ⩱> Here is where Fiol lost his winning advantage... after missing several forced mates... Maybe he was short on time? Black is still winning ...
 
   Feb-23-21 Capablanca vs E Corzo, 1901
 
Sergash: <31.a5-a6 -+> Even stronger is 31.Ra7-c7! Rb2-a2 32.b3-b4 -+ Stockfish 12 - 64 bits POPCNT. <31...Rb2xb3? 32.Ra7-c7 b5-b4 33.a6-a7 Rb3-a3 34.Rc7-c8+ Kf8-e7 35.a7-a8Q 1-0> As noticed by <NBZ>, this is a mistake. Though also losing, Black would have offered a better ...
 
   Feb-14-21 L Paredes vs Capablanca, 1901
 
Sergash: <13...c7-c6 14.c3-c4 -+> 13...e4xf3e.p.! 14.g2xf3 g7-g5! -+ Δ 15.Be3xg5? Rh8-g8 Stockfish 12 - 64 bits POPCNT. <14...a7-a6 15.Be3-b6 Ba4xb3 16.a2xb3 Ne7-g6 17.g2-g3 Bf8-e7! 18.Kg1-f2 h7-h5! 19.h2-h4 -+> Strange move... More logical would be 14...b7-b6! -+ ...
 
   Feb-10-21 Capablanca vs E Delmonte, 1901 (replies)
 
Sergash: <9...d7-d6?! +-> Seems logical, but better are: A) 9...Ng8-h6 10.Ra1-c1 b7-b6 (or 10...f7-f6 11.Rc1-c3 +- Stockfish 12 - 64 bits POPCNT) 11.Nd2-c4 +- Stockfish 12 - 64 bits POPCNT. B) 9...b7-b6 10.Nd2-c4 +- Stockfish 12 - 64 bits POPCNT. <10.Ra1-c1 +-> Good enough, but ...
 
   Sep-13-20 V Hansen vs Carlsen, 2002
 
Sergash: In the final position, Hansen possibly realized that continuing the game was hopeless after 41.Kh2xg2 a7-a5 42.Kg2-f2 a5-a4 43.Kf2-e2 b4-b3 (or 43...a4-a3 44.Ke2-d2 b4-b3 45.a2xb3 a3-a2 mating in 16 moves or less. Stockfish 11 - 64 bits POPCNT) 44.a2xb3 a4-a3! etc. mating in 18 ...
 
   Sep-01-20 B E Glenne vs Carlsen, 2002
 
Sergash: <24.Bc1-b2? g5-g4! (to prevent White from answering h5-h4 with g3-g4, keeping the position closed) 25.Ra1-c1 c7-c6 ∓> Either: A) 24.Ra1-a2 Kc8-d7 ⩱ Stockfish 11 - 64 bits POPCNT (or 24...Re8-e6 ⩱; but not 24...Nf5xd4?! 25.Ra2-d2 = / ⩲ Stockfish 11 - ...
 
   Aug-27-20 Carlsen vs Michael Rosbach, 2001
 
Sergash: <29.Rc4-b4 Qb8-d8 30.g2-g3 +-> 29.Qf3-f4! Qb8-e8 30.g2-g3! +- Komodo 9.2 64 bits. <30...Qd8-d7?! 31.Rb4-b8+ Bg7-f8 32.Qf3-a8! Qd7-d6 +-> 30...Bg7-e5 would give some space to the black king... <33.Qa8-b7 Kg8-g7> Better is 33.Rb8-d8 +- Komodo 9.2 64 bits. Also enough
 
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