Efim Bogoljubov vs Gottlieb Machate (1927)

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Efim Bogoljubov vs Gottlieb Machate
25. DSB Kongress (1927), Magdeburg GER, rd 11, Jul-29
Slav Defense: Exchange. Schallopp Variation (D12) · 1-0

ANALYSIS [x]

FEN COPIED

explore this opening	find similar games	3 more Bogoljubov/G Machate games
sac: 38.Rxg7+	PGN: download \| view \| print	Help: general \| java-troubleshooting

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May-09-05		TheAlchemist: Nice, a game between two God Lovers. I guess the Gods favored Bogoljubov in this one. Maybe he has sacrificed more to appease them.

Mar-26-24		TheaN: The text is decisive after 39....Qf7 40.Qxd3 +- but Black had no obligation to resign straight away: in practice this can be quite tricky given Black has a few technical draws in hand if he can sac the piece for two pawns. I've seen worse being blundered to a draw even by pretty experienced players.

Mar-26-24		Mayankk: White is up a pawn but his Bishop is pinned and so Rxg7+ doesn't seem to work at first glance. My initial thought therefore was 38 Qc4+ and see if I can pick the unguarded Black Rook after Black Queen moves. It was tricky as Black had 38 ... Kh8. I then realised that I can achieve a similar outcome by switching the move order. 38 Rxg7+ Qxg7 39 Qc4+ Ne6 40 Qxd3. Now White was two pawns up, a very strong Bishop and a Black King out in the open and prone to harassment. My ever optimistic self assumed this was a forced win.

Mar-26-24		takebackok: Spotted the pawn win fast, then realizing winning another pawn would be big and exchanging off the rooks is even bigger. Not a true Tuesday.

Mar-26-24		mel gibson: I chose 38. Qc4+ Stockfish 16 chooses the same ply: 38. Qc4+ (38. Qc4+ (1.Qc4+ Kh8 2.Rxa7 Qg5 3.Kb4 Rxc3 4.Qxc3 Kg8 5.a4 Ne6 6.Qc8+ Nf8 7.Qc4+ Kh7 8.Qc3 Qg6 9.Ka3 Kh6 10.a5 Nh7 11.Rc7 Nf6 12.a6 Nd5 13.Qxg7+ Qxg7 14.Rxg7 Kxg7 ) +8.29/41 360) score for White +8.29 depth 41. If I force SF to play the game ply it's not as strong: 38. Rxg7+ Qxg7 (38. .. Qxg7 (1. ... Qxg7 2.Qc4+ Ne6 3.Qxd3 Qh6 4.b3 Qh5 5.b4 Qg5 6.Qe4 Kf7 7.Qh7+ Ke8 8.Qxa7 Qf5 9.Qa4+ Ke7 10.Qd1 Nc7 11.Kb2 Nd5 12.Qd4 Qf3 13.Bd2 Nf6 14.b5 Ne4 ) -6.06/44 293) score for Black -6.06 depth 44.

Mar-26-24		Allderdice83: After 39 .... Kh7, 40 Qh4+ Kg8 just repeats moves. So instead 40. Qxd3+ Qg6, and then just 41. Qxg6+ trades into a won endgame for White. But perhaps it's a little early for Black to resign.

Mar-26-24		saturn2: I had the gameline. 38.Rxg7 Qxg7(Kh8 39.Qxf8) 39. Qc4+ and 40. Qxd3 . Then white should trade off pieces and win.

Mar-26-24		Teyss: That's it, winning a measly Pawn and simplifying to a boring Queen + minor piece endgame? Where are the good ol' massacre Tuesdays? Agree with <TheaN> and <Allderdice83>: Black could have continued playing at the end just in case. Maybe he was impressed by the stature of his opponent.

Mar-26-24		cocker: Strangely, Fritz much prefers 38 Rxa7; 38 Rxg7+ is not in the top 4 moves.

Mar-26-24		TheaN: In hindsight, if we are simplifying winning a pawn, why not just 38.Rxa7 or 38.Qc4+ Kh8 39.Rxa7 winning just the pawn? The base rule in unbalanced positions is to trade pieces if you're up a piece, but not necessarily if you're up pawns as the resulting position may not be as easy to win. Here both rooks are relatively active but White's technically better. After Rxa7 White is still threatening Rxg7+ and up three pawns should be straightforward, and I see no practical way for Black to solve his issues. A slightly cooked puzzle, as the text doesn't necessarily do more than just grabbing a7.

Mar-26-24		chrisowen: Eh its dj u v puffs its q i lurk Rxg7+ arrive its oi duh its axiom juggle its cab Rxg7+ gab!

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