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Jacob Murey vs Tom Bottema
Seville Open (1987), Sevilla ESP, rd 3, Nov-??
English Opening: Agincourt Defense. Neo Catalan Declined (A14)  ·  1-0



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Kibitzer's Corner
Dec-14-17  stacase: That was rather easy. Does it count if you saw all the way to 35.Bf1 ?
Premium Chessgames Member
  al wazir: What happens after 32...Qxb4 ? If 33. Rxc8+ Kf7 34. Rd8 Rxc7 35. Rxc7+, white has ♖ + ♖ vs. ♕ + ♘.
Dec-14-17  dfcx: The game line was easy to figure out, the hard part for me was to figure out the following line

32.Rb8 Qxb4
33.Rxc8+ Kf7

Dec-14-17  stacase: And after the rush to be first to comment my continuation went all the way to 39.g4 and Black throws in the towel. Dunno, sometimes you see it and sometimes you don't. Well I was never rated much over 1400 so I guess that's the reason.
Premium Chessgames Member
  al wazir: <dfcx: 34.Rb8!> Qe1+ 35. Rxe1 Rxc7. White is up an exchange and the outside passed ♙.


Dec-14-17  Cheapo by the Dozen: Nice Wednesday puzzle.

The trickiest line for me was 32 Rb8 Qf8, with the plan to unblock the e6 bishop's defense of c8, because I didn't see how thoroughly screwed Black is after the obvious 33 Qx8+ (both recaptures meet immediate disaster at c8).

So I came up with 33 Rc6 to prepare Qb7. I think that actually works. But of course 33 Qxf8+ is much better.

Dec-14-17  SpamIAm: 24...Be6 must be the losing move. He had to try 24...ab.
Premium Chessgames Member
  agb2002: White has two pawns for a knight.

Black threatens Qxb4 followed by Rdxc2.

The rook on c8 is defenseless and the one on d7 is tied to the defense of the queen. This suggests 32.Rb8:

A) 32... Qxb4 33.Rxc8+ Kf7 34.Rb8

A.1) 34... Qxa4 35.c8=Q + - [R vs n].

A.2) 34... Rxc7 35.Rxc7+ Qe7 (else 36.Rxb4 + - [2R+P vs n]) 36.Rxe7+ Kxe7 37.Rb4 followed by Rxd4 + - [R+2P vs n].

A.3) 34... Qd2 35.c8=Q Qxe2 36.Bf1 [R vs n] but Black seems to have some counterchances in this complex position.

B) 32... Qf8 33.Qxf8+ Rxf8 34.Rxf8+ Kxf8 35.c8=Q+ wins.

Dec-14-17  Cybe: I think, the best line for Black is 32... Q:b4. And after R:c8+, Kf7, Rb8, Qd2, c8Q, Q:e2 Black has chances for a draw.
Dec-14-17  saturn2: I saw white gaines material after 32 Rb8 QxQ 33 RxRc8 followed by 34 Rb8.
Dec-14-17  malt: 32.Rb8 Q:b4 33.R:c8+ Kf7 34.Rb8 Qd2
(34...R:c7 35.R:c7+ Qe7 36.R:e7+ K:e7)
Dec-14-17  Walter Glattke: 32.Rb8 Qxb4 33.Rb8 Rxc7 34.Rxc7+
decisive check
Dec-14-17  Jaredfchess: easy enough. Took me about two minutes. The gist of the solution is you can temporarily give up your queen because you will promote and win. The nice move to end the variation where black does take the queen is 34. rb8! that move is nice. Note you cannot simply snatch the queen immediately (32.Qxd6 rxd6) here because then the bishop will hold the queening square and you can never play rxc8+ favorably.
Dec-14-17  gofer: Well, I got

<32 Rb8 ...>

32 ... Qxb4
33 Rxc8+ Kf7
34 Rb8 +-

<32 ... Rxc7>

and then went differently...

<33 Qxd6 Rxc1+>

<34 Bf1 ...>

So, is this better or worse than the game continuation. It looks better for white from my perspective...

click for larger view

Dec-14-17  mel gibson: The computer agrees with the first move but Black plays stronger:

32. Rb8
(32. Rb8 (♖b7-b8 ♕d6xb4 ♖b8xc8+ ♔g8-f7 ♖c8-b8 ♕b4-d2 c7-c8♕ ♕d2xe2 ♗g2-f1 ♕e2-f3 ♕c8-c2 ♘f6-g4 ♗f1-g2 ♕f3xd3 ♕c2xd3 e4xd3 ♖c1-d1 ♗e6-c4 ♖b8-b4 ♗c4-a6 ♗g2-c6 ♖d7-c7 ♖b4-b6 ♖c7-a7 a4-a5 ♔f7-e7 h2-h3 ♘g4-e5) +1.93/18 229)

score for White + 1.93 depth 18

Dec-14-17  Gejewe: Black's name is not Bottena, but he is Tom Bottema, present in the CG database. He once showed me the game and claimed that he was winning at some point, but swindled and lost..
Dec-14-17  patzer2: For today's Thursday (32. ?) puzzle, I correctly played guess the move from 32. Rb1! through 35. Bf1 +-.

However, after 35...f4 I realized Black was threatening 36...Bh3 with mate to follow and the win would not be easy. At that point, White reacted correctly with 36. Qxf4! +- threatening the Rook. I picked a different winning move with 36. Qa3 +- also threatening the Rook.

My calculation went 36. Qa3 Re1 37. Qb4 Rc1 +- when White wins after 38. Qb2 Re1 39. Qb3+ Kh8 40. Qb8 Rc1 41. dxe4 +- (+7.39 @ 25 ply, Stockfish 8).

However, I'm not so sure that playing guess-the-move for most or even all of the game line fully solves this puzzle.

Black can put up more resistance with 32...Qxb4 (+2.15 @ 30 ply, Stockfish 8) or 32...Kf7 (+2.54 @ 35 ply, Stockfish 8).

The wins against 32...Qxb4 and 32...Kf7 are slightly tricky but similar:

32...Qxb4 33.Rxc8+ Kf7 34.Rb8! Qd2 35.c8=Q +- (+2.15 @ 30 ply, Stockfish 8)

32...Kf7 33. Rxc8! Qxb4 34. Rb8! Qd2 35. c8=Q +- (+2.54 @ 35 ply, Stockfish 8)

P.S.: Black's decisive error was 31...Rd7? allowing 32. Rb1! +-. Instead, 31...Ne8 32. Qxd6 Rxd6 33. xe4 Rd7 ⩱ (-0.44 @ 33 ply, Stockfish 8) leaves the second player with a comfortable advantage.

Dec-14-17  patzer2: Black's best missed chance appears to be 28...Ra8 ∓, when play might go 28...Ra8 29.Rc1 Qa7 30.dxe4 fxe4 31.Re5 Qc7 32.Qc5 d3 33.exd3 exd3 34.Qc3 Rad8 35.Rd1 Ng4 36.Rxe6 Rxe6 37.Qc4 Re8 38.Bd5 Qf7 39.Bxe6 Qxe6 40.Qxe6+ Rxe6 41.Rxd3 Rxc6 42.Rd4 Ne5 43.Rd5 Rc1+ 44.Kg2 Nc6 45. Rd7 Ra1 ∓ (-1.20 @ 32 ply, Stockfish 8).
Premium Chessgames Member
  Bubo bubo: White must make use of his pawn on c7 now, otherwise he will lose it after an exchange of queens. Therefore 32.Rb8!, pinning the unguarded Rc8:

A) The rook must not capture on b8 or retreat to f8, or White will get a second queen (32...Rf8 33.Rxf8+ Qxf8 34.Qxf8+ Kxf8 35.c8Q+ or 33...Kxf8 34.c8Q+).

B) It cannot be guarded in an acceptable manner:the other rook must stay on the d-file in order to protect the queen, and 32...Qf8 fails to 33.Qxf8+ Rxf8 34.Rxf8+ Kxf8 35.c8Q+.

C) Therefore Black can only try 32...Qxb4, but 33.Rxc8+! Kf7 34.Rb8 attacks the queen and threatens promotion, and after 34...Qxa4 35.c8Q+ or 34...Rxc7 35.Rxc7+ Qe7 36.Rxe7+ Kxe7 White is up at least the exchange.

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