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Vadim Moiseenko vs Egor Bykov
Russian Championship Higher League (2018), Yaroslavl RUS, rd 9, Jul-05
Center Game: Berger Variation (C22)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Apr-11-20
Premium Chessgames Member
  An Englishman: Good Evening: Bit of an oops on my part--thought the puzzle was White to Play and decided upon Nxg7. Upon playing through the game, the thought came to me that 20.Nxg7 might deserve serious consideration anyway, but 20...Qa5 looks troublesome.
Apr-11-20  Walter Glattke: 19.-Bxc4 20.Bxc4 Qxe4 wins a pawn after 19.f4? Looks like Vodka Chess, why 19.-Nb4!? threatens 20.Kb1?? Qa4 21.a3?? Qxd1# so 20.Qa3 Rb8 21.Nxg7 Kxg7 22.Qc3+ Kg8 23.h5 if 23.-h6?? then 24.gxh6+ Kh7 25.Qg7# 20.Qa3 Bxc4 21.Bxc4 a5 or 20.-Qa4 21.Qxa4 Nxa4 22.Kb1 - the combination, that CG shows is not plausible, stockfish should proof that, or CG should redigate every puzzle before publishing, that was good journalism. Or Maybe they play "Anderssen-Kieseritzky" with 20.a3 Na2+ 21.Kb1 Qa4 22.Kxa2!! Qxd1 23.f5 Bxc4 24.Bxc4 Qxh1 25.Qd4 Rg8 26.Bxf7, but black should win that.
Apr-11-20  Walter Glattke: Oh. Rb8. not on a8, surely other variations.
Apr-11-20  yadasampati: Beautiful finishing combination. The game of chess still keeps amazing me, after all these years.
Apr-11-20  Walter Glattke: 20.Kb1?? Qa4 21.axb4 Qxd1+ 22.Qc1 Qxc1+ 23.Kxc1 Rxb4 20.Qa3 f6 and the Kieseritzky Variation was then 19.-Nb4 20.a3 Na2+ 21.Kb1 Qa4 22.Kxa2?? Rxb2+ 23.Kxb2 Rb8+ 24.Kc1 Nb3+ sorry, I had wrong positions for a white and a black rook. But 19.-Nb4 seems to be not powerful, and 19.-Bxc4 20.Bxc4 Qxe5 wins a pawn and black advantage.
Apr-11-20  mel gibson: I wasn't sure.

Stockfish 11 says:

19... Nb4

(19. .. Nb4 (♘c6-b4 a2-a3 ♘b4-a2+ ♔c1-b1 ♕e8-a4 ♖d1-d2 ♘c5xe4 ♖d2-c2 ♘e4-c3+ ♖c2xc3 ♘a2xc3+ ♕e3xc3 ♕a4-d1+ ♔b1-a2 ♕d1xh5 ♖g1-g2 ♕h5xh4 b2-b3 f7-f6 g5-g6 ♕h4xf4 ♗f1-d3 ♖b8-b5 ♕c3-d2 ♕f4xd2+ ♘c4xd2 ♖b5-h5 g6xh7 ♖h5-h3 ♗d3xa6 ♖f8-b8 a3-a4 ♗e6xb3+ ♘d2xb3 ♖b8xb3 ♗a6-b5 g7-g5 ♗b5-d7 ♖b3-a3+ ♔a2-b1 ♖h3-b3+ ♔b1-c2 ♖b3-c3+ ♔c2-b2 ♔h8xh7 ♗d7-f5+ ♔h7-g7 ♖g2-h2 ♖a3-b3+ ♔b2-a2 ♖b3-b4 ♖h2-h7+ ♔g7-g8 ♖h7-h6 ♖b4xa4+ ♔a2-b2 ♖c3-c5 ♖h6xf6) +7.13/35 133)

score for Black +7.13 depth 35

Apr-11-20  Brenin: Oh, dear! Like <An Englishman> I assumed that this was White to play, and couldn't decide whether to try Qc3 before or after Nxd6. Of course, neither works. After castling Q-side behind that tempting pawn on c4, White's K-side advance was always going to be outpaced by Black's impressive Q-side attack. 27 Kd3 would have avoided the pretty mate, but the position after 27 ... Nxe4 is hopeless.
Apr-11-20  Walter Glattke: 19.f4? 19.Nf6!
Apr-11-20  Brenin: <Walter Glattke: 19.f4? 19.Nf6!> After 19 Nf6 gxf6 20 gxf6 either 20 ... Nd7 or 20 ... Rg8 leaves White with nothing for his knight. 19 Rd2, shoring up the second rank, would have been better than the pointless 19 f4, but Black's attack with 19 ... Nb4 was still coming.
Apr-11-20
Premium Chessgames Member
  takchess: I thought Bxc4 bxc4 followed by rook sac on b2 but that leads nowhere
Apr-11-20  Rama: Mated by a pawn, nice.
Apr-11-20
Premium Chessgames Member
  chrisowen: Garage house no?
Apr-11-20
Premium Chessgames Member
  agb2002: The black queen x-rays the e-pawn but after 19... Bxc4 20.Bxc4 Qxe4 21.Qxe4 Nxe4 22.Bd5 White wins material.

Black can pile up along the b-file with tempo 19... Rb4 20.b3 (20.Nd2 Bxa2) 20... a5 and if 21.Qc3 Rg8 22.Nxa5 Qa8 looks very good for Black.

A third option is the direct 19... Nb4 and if 20.Kb1 Nxa2 21.Kxa2 Qa4+ 22.Qa3 Bxc4+ seems to win a pawn at least.

I don't know but think I'd play 19... Rb4.

Apr-11-20  seneca16: Impressive sequence! Blacks position did not look very menacing to me. The unguarded rook at d1 is important.
Apr-11-20
Premium Chessgames Member
  chrisowen: Instant karma?
Apr-11-20  King.Arthur.Brazil: Very beautiful production indeed! I found 20...♘b4. For 21.a3 ♕a4(♘) ♘a2+! (I saw but I didn't believe he will do it)22.♔b1 ♕b5! (I guess that this move is simpler than other, because after 22. ♖d2 ♗xc4 23. ♗xc4 ♕xc4... white lost a piece with no compensation. Black attack continues with 24...♘c3+ or 24...♘xe4. I don't know if white has better moves in the remainder of the game. After that, I found the moves 23...♘c3+, I played 24...♖8b8 instead of 24...♖xa3 although also saw it, but I though that the last one was more strong, and the following after 25...♘b3+ till check-mate. Sometimes, you don't see immediately where the combination will reach. Maybe, even the grand masters don't, but they go on their experience and judment, that come from many tournaments, quick games, etc. Nevertheless, many games fall into positions already studied before, moreover with computer aided chess (prepared variations).
Apr-11-20
Premium Chessgames Member
  chrisowen: To my baby no?
Apr-11-20
Premium Chessgames Member
  chrisowen: No Chuffing heck moniker.
Apr-11-20
Premium Chessgames Member
  perfidious: The first move readily suggests itself, but the followup is by no means obvious.

Signed, life 1200 player

Apr-11-20  RandomVisitor: After 15...Be6 the game is likely equal. White just needs to tuck his king into a safe place.


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Stockfish_20040717_x64_modern:

<46/64 10:11 0.00 16.Kb1> Qe8 17.Rc1 f5 18.h5 fxe4 19.fxe4 Ne5 20.Nxe6 Nxe6 21.h6 g6 22.cxb5 axb5 23.Bh3 c5 24.Rhf1 Nc7 25.Nf3 Nc4 26.Qc3 Rf7 27.Rce1 Qe7 28.Nd2 Rxf1 29.Rxf1 Nxd2+ 30.Qxd2 Qxe4+ 31.Ka1 Qe5 32.Re1 Qg3 33.Bg2 Rf8 34.Re7 Re8 35.Qd5+ Nxd5

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