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Almira Fyodorovna Skripchenko vs Juan Carlos Blazquez Gomez
Pamplona op (2000), rd 6
Scandinavian Defense: Richter Variation (B01)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Aug-11-20  stacase: One of those little sayings when you post says, "Passed pawns must be advanced."
Aug-11-20  Walter Glattke: 34.Qd6+ and 35.Qxb8, 33.d7 Qb6 34.Nc6 Bf6 35.Nxd8 Bxd8 36.Qe5 Be7 37.Qh8+ Kf7 38.d8Q or 36.-Kf7 37.Qh8 h5 38.Re1 or 35.-Qxd8 36.Rc1 Ke7!? 37.Re1+ or 36.-Kg7 37.Rc8 easy? no.
Aug-11-20  stacase: And when I posted, it actually said, "Passed pawns must be pushed"
Aug-11-20  Brenin: I wasted a minute or looking for mating patterns, before realising that the rather boring 33 d7, threatening both Nc6 and Qd6+, was enough. White was lucky to win this, after playing the horrible 12 c5, but Black's pointless 20 ... Bh6 returned the favour.
Aug-11-20  LoveThatJoker: I went with 33. Nc6. If 33...Rd7 34. Rb1 looks crushing to me.

If something like 33...Ra8 34. d7 winning.

LTJ

Aug-11-20  LoveThatJoker: Stockfish finds a strong defense to my first variation with 34...Bf6. White has the advantage (+0.94) but has missed the quick kill of the game continuation.

I have failed todays puzzle.

LTJ

Aug-11-20  mel gibson: So easy.
It was obvious.
Aug-11-20
Premium Chessgames Member
  agb2002: White has a knight for a bishop.

Black threatens Rxb8.

The advanced d-pawn suggests 33.d7, trying Nc6:

A) 33... Rxb8 34.Qd6+ and 35.Qxb8 is winning.

B) 33... Be5 34.Nc6 Bc7(f6) 35.Nxd8 Bxd8 36.Qa8 wins decisive material.

C) 33... Bh6 34.Nc6 Bf4 35.Nxd8 Qg3 36.Ne6+ wins.

Aug-11-20
Premium Chessgames Member
  malt: Have 33.d7 Be5

(33...R:b8 34.Qd6+ )

34.Nc6 Bc7 35.N:d8 B:d8

(36.Rb1 would fail to ...Qc3
37.Rb8? Qc1+ 38.Kh2 Qf4+ )

Looked at 33.Qb7 Δ 34.Qe7+ Q:e7 35.de7+ K:e7 36.Nc6+

33...Kg8 34.d7 Bf6

Aug-11-20  cocker: 33 Qb7 is just as good as the move played; Black doesn't have to take the knight.
Aug-11-20  saturn2: 33.d7 wins a piece
Qe5(Rxb8 34 Qd6+ and the d pawn is through)
34 Qxe5Bxe535.Nc6Bf636.Nxd8Bxd8
37.Re1
Aug-11-20  saturn2: Maybe after 33 d7 Qe5 34 Nc6 is better.
My line above only wins an exchange
Aug-11-20  Walter Glattke: Black has perpetual after B) 22.-Be5 34.Nc6 Bc7 35.Nxd8 Bxd8 36.Qa8 Qg4 37.Re1!? Kf7 or even crash with 38.Re8? Qc1+ 39.Kh2 Bc7+ 40.g3 Qd2+ 41.Qg2! Qxd7 36.Qa8 Qg4 37.Qxa7, the transforming of the pawn is rather impossible, but NxR brings material advantage.
Aug-11-20
Premium Chessgames Member
  gawain: I was looking for something more dramatic starting with Nd7+. That does not work. I did not really appreciate how d7 wins.
Aug-11-20  TheaN: There's some pitfalls for White to fall into if he's sloppy in converting, but I'd say the d-pawn is too strong as is. That said, at hand <33.d7 +-> looks a bit moot, but there's no combined defense against Nc6 and Qd6+. 33....Rxb8 doesn't just win the exchange after 34.Qd6+ +-. Black's best seems to be 33....Bf6 34.Nc6 f4, the last move preparing counterplay via f3, 35.Qd6+ Kg7 36.Nxd8 Bxd8 37.Rf1 g5 38.Qd1! +-


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which is an interesting end: White blocks any Black counterplay and prepares Re1-e8. In any situation where White 'just' goes up the exchange, converting might be slightly more tricky.

Aug-11-20  Nullifidian: 33. ♕b7, protecting the rook and threatening 34. ♕e7+ ♕xe7 35. ♙dxe7+ ♔xe7 36. ♘c6+, winning the rook outright.

33... ♕e8 is a potential move in this position, but 34. ♙d7 forces the queen to move. Personally, I'd play 34... ♕e2 to threaten the rook, but white has 35. ♕b4+. 35... ♔f7 is the best response because ♔g8 loses the queen to a tactic (36. ♖e1, and now you can't save the queen with something like ♕d3 because of 37. ♖e8+ ♖xe8 38. ♙dxe8=♕+ ♗f8 39. ♕bxf8# or ♕exf8#), and now 36. ♕b3+ protects the rook with a tempo. 36... ♔f8 37. ♘c6 ♗f6 and you can win the exchange, but I'd play the following finesse first: 38. ♕b4+ ♗e7 39. ♕b1, threatening the same ♖e1 tactic, 39... ♕e6 (threatening to capture the knight so ♖e1 no longer works) 40. ♘xd8 ♗xd8 41. ♕b8 and now when either the king or queen move to protect the bishop, then 42. ♕xa7, creating a passed pawn on the a-file as well.

Another good move would be 33... ♔g8 to get away from any idea of checks on the seventh rank. Then 34. ♙d7 ♗f6 35. ♘c6 and white will either win the exchange or win a piece for the d-pawn if black plays ♖f8.

Aug-11-20  little ernie: Cooked.
Stockfish 10 64 , at 27 ply :
33. d7 + 5.82
33. Nc6 + 5.82
33. Qb7 + 5.57
Aug-11-20  Brenin: <TheaN>: After a move like 34 ... f4, I'm afraid I'd be a spoilsport by killing any possible counterplay with 35 Nxd8 Bxd8 36 Qd2, forcing the Q exchange (otherwise Re1 and Re8 are fatal for Black), marching my K to c8, and then driving the Black K away from e7 with a R check. What can Black do about it?
Aug-11-20  Cheapo by the Dozen: I went with the plan

33 Nc6 Rd7
34 Ne7

with simplification down to an exchange-for-pawn endgame in which White quickly wins more material.

Happily, it also wins thumpingly.

Aug-11-20  RandomVisitor: Our puzzle today has several winning ideas, perhaps one is better than the other only after a look with a computer:


click for larger view

Stockfish_20080713_x64_modern:

39/75 14:15 7,492,427k 8,759k +8.81 33.d7 Bf6 34.Nc6 Qe2 35.Rg1 Qe3 36.Qd6+ Kf7 37.Qc7 Qb6 38.Nxd8+ Bxd8 39.Qe5 h5 40.Qh8 h4 41.Rd1 a6 42.Qh7+ Kf6

39/69 14:15 7,492,427k 8,759k +7.99 33.Qb7 Rxd6 34.Qc8+ Kf7 35.Qc7+ Qe7 36.Qxd6 Qxd6 37.Rxd6 Be5 38.Rd7+ Ke6 39.Rxa7 Bxb8 40.Rb7 Bf4 41.Kg1 Kd6 42.Kf2 Kc6

39/59 14:15 7,492,427k 8,759k +6.70 33.Nc6 Rd7 34.Nb8 Rf7 35.Na6 Qe4 36.Qb3 Rb7 37.d7 Rxb3 38.d8Q+ Qe8 39.axb3 Qxd8 40.Rxd8+ Ke7 41.Rd3 Be5 42.b4 Bd6

38/70 14:15 7,492,427k 8,759k +5.08 33.Qb5 Bf6 34.d7 Qe6 35.Na6 Qxa2 36.Nc5 Qc2 37.Rg1 Kf7 38.Nb7 Qd2 39.Nxd8+ Bxd8 40.Qc4+ Kg7 41.Qa4 a5 42.Qa1+ Kf7

Aug-11-20
Premium Chessgames Member
  PawnSac:


click for larger view

In the Qb7 Rxd6?! Qc8+ line the Stockfish_11_x64 eval goes up to +11.61 @ 48/72+

Black is better to not take the pawn with the rook..


click for larger view

and instead play ..Kg8 34.d7 Bf6 35.Nc6 Rf8 36.d8=Q Bxd8 37.Nd8

Stockfish_11_x64 give black -7.71 @ 48/83

I mean, yea, black is still lost, but it is better than ..Rxd6. On the other hand black could play ..Rxd6 and hope and pray white is dumb enough to play 34.Rxd6 quickly without seeing the mate after ..Qe1+ Kh2 Be5+ etc.

Aug-11-20
Premium Chessgames Member
  Breunor: Also went for Qb7, which is slightly worse than than d7.
Aug-11-20  MostlyWatch: I never do very well with these. There are just enough options get my thoughts tangled. After 34.Qd6+, if black doesn't resign, his king is in check, there's only 3 things you can do: 1) move the king 2) move something in between to block the check 3) take the checking piece. Black has nothing that can take the white queen. But he does have something he can block with: 34... Qe7. Then I have trouble foreseeing what would happen after that.
Aug-11-20  RandomVisitor: A final, final look at today's puzzling puzzle:


click for larger view

Stockfish_20080713_x64_modern:

<49/84 7:14:14 +14.41 33.Qb7 Kg8 34.d7> Bf6 35.Nc6 h5 36.Nxd8 Bxd8 37.Qa8 Qe7 38.Qd5+ Kh7 39.Qd6 Qe2 40.Qd2 Qc4 41.Qd5 Qc7 42.Re1 Qb6 43.Qf7+ Kh6 44.Qe8 Qf6 45.Qe6 Qh4 46.Qe3+ Kg7 47.Qe5+ Kh7 48.Qa1 Bf6 49.Qd1 Qg3 50.Re6 Bd8 51.Qd6 Qg5 52.Qc5 h4

49/81 7:14:14 +13.68 33.d7 Bf6 34.Nc6 Qe2 35.Rg1 Bh4 36.Qd6+ Kg8 37.Nxd8 Bxd8 38.Qb8 Qe7 39.Qb3+ Kf8 40.Qb2 Kf7 41.Qh8 Qh4 42.Rc1 Be7 43.Qe5 Qg5 44.Re1 Bf6 45.Qc7 Bd8 46.Qc3 Bf6 47.Qc4+ Kg7 48.Qc7 Bd8 49.Qe5+ Kh6 50.Qe3 f4 51.Qe5 Qf5 52.Qxf5 gxf5

49/90 7:14:14 +9.94 33.Nc6 Rd7 34.Nb8 Rf7 35.Na6 Qe4 36.Qb3 Rb7 37.d7 Bf6 38.Nc5 Rxb3 39.Nxe4 fxe4 40.axb3 Bd8 41.Kg1 Ke7 42.Kf2 Ke6 43.Ke3 Bb6+ 44.Kxe4 Bd8 45.Rd5 Ke7 46.h4 Bc7 47.g4 Kd8 48.h5 Bg3 49.h6 Bc7 50.Rd1 Ke7 51.Rf1 Bd8 52.Kd5 a5

49/77 7:14:14 +6.76 33.Qb5 Bf6 34.d7 Qe6 35.Na6 Qxa2 36.Nc5 Qc2 37.Rf1 Qd2 38.Ne6+ Kg8 39.Nxd8 Bxd8 40.Qb3+ Kf8 41.Qa3+ Kf7 42.Qxa7 Qd6 43.Qa2+ Kf8 44.Qa1 Bc7 45.d8Q+ Bxd8 46.Rd1 Qxd1+ 47.Qxd1 Bf6 48.Qd6+ Kf7 49.Qd5+ Kg7 50.Qd7+ Kg8 51.Qe6+ Kg7 52.Kh2 f4

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