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Ivan Morovic Fernandez vs Mahmood Lodhi
Khanty-Mansiysk Olympiad (2010), Khanty-Mansiysk RUS, rd 1, Sep-21
Benoni Defense: Hromadka System (A57)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Sep-22-10  guikfc: 15..Na4 was better, following his original plan
Sep-22-10  apexin: nice finish
Sep-22-10  Jim Bartle: Why did black let white's queen into d8 so nicely?
Sep-22-10
Premium Chessgames Member
  perfidious: <Jim Bartle> It was the only defence for his pawn at a6; Black most likely overlooked the concluding combination.

8.Be2 is an idea I've never seen, avoiding the common 8.Bd3 exd5 9.exd5 Re8+ 10.Be3.

The heading is another case of mistaken nomenclature, as the ECO code listed in the score, E90, is correct. This is indeed a KID by transposition.

Dec-08-21  Cheapo by the Dozen: White would like to play Bh6, threatening mate on 2 squares. Only Black's queen can defend.

Thus, after 30 Bxb5, White's bishop is poisoned, because after 30 ... Qxb5 31 Bh6 Black has no defense against mate.

Worse,

30 Bxb5 (Q moves)
31 Bxe8 Qxe8
32 Bh6 Qf7

allows

33 Qd8+, winning the knight.

Dec-08-21  Brenin: 30 Bxb5 Qxb5 31 Bh6, and the threatened mates by 32 Qg7 or Qf8 cannot both be avoided. If 30 ... Qe7 then 31 Qxe7 Nxe7 32 Bxe8 wins a piece. If 30 ... Qf7 then 31 Qd8 Kf8 32 Bh6+ Kg8 33 Bxe8 wins a piece.
Dec-08-21
Premium Chessgames Member
  ajk68: 24...Bxe8? is definitely wrong. It even looks wrong.
Dec-08-21  ndg2: 31..Qf7 doesn't help because of 32.Qd8 and one of black pieces will fall.
Dec-08-21  ndg2: I don't think, taking with the e-pawn on d5 is that good, I almost automatically take with the c-pawn.
Dec-08-21  Brenin: <Cheapo>: 30 Bxb5 Qe7 31 Bxe8 Qxe8 32 Bh6 allows Qe1+ 33 Kh2 Qe5+ 34 Qxe5 dxe5, saving the piece, though White is a P up and should win the endgame. Better is 31 Qxe7 Nxe7 32 Bxe8, winning a piece.
Dec-08-21  Brenin: <ajk68>: 24 ... Kxe8 allows 25 Qc3 followed by a K-side invasion with Qg7 or Qh8, while 24 ... Qxe8 allows a Q-side invasion with 25 Qa5 and Qc7. Black is already lost at this stage.
Dec-08-21  Whitehat1963: Missed Tuesday. Got Wednesday.
Dec-08-21
Premium Chessgames Member
  al wazir: <Whitehat1963: Missed Tuesday. Got Wednesday.> That's because Wednesday was easier.
Dec-08-21  mel gibson: Good puzzle -
it took 2 minutes to figure it out.
Deflect the Queen!

Stockfish 14 says:

30. Bxb5

(30. Bxb5 (♗d3xb5
♕d7-e7 ♕f6xe7 ♘c8xe7 ♗b5xe8 ♘e7xd5 a2-a4 ♘d5-c7 ♗e8-d7 ♔g8-f7 a4-a5 ♘c7-a6 ♗d7-c8 ♘a6-c7 a5-a6 ♘c7xa6 ♗c8xa6 ♔f7-e6 ♔g1-h2 ♔e6-e5 ♔h2-g3 ♔e5-e4 ♗a6-b5 ♔e4-e5 ♔g3-f3 ♔e5-e6 ♗b5-c4+ d6-d5 ♗c4-a6 ♔e6-d7 ♔f3-f4 ♔d7-d6 ♗a6-b5 ♔d6-e6 ♗b5-e8 d5-d4 ♗e8-b5 ♔e6-d5 b2-b3 ♔d5-e6 ♗g5-h6 ♔e6-d5 ♗h6-f8 c5-c4 ♗b5xc4+ ♔d5-c6) +10.81/38 242)

score for White +10.81 depth 38.

Dec-08-21
Premium Chessgames Member
  al wazir: White's three-move ♕ maneuver to reach f6 (moves 26--28) was as pretty as the ♗ sac.
Dec-08-21  landshark: Deflecting the Q by 30.Bxb5 was my first idea. Then it started to look complicated, especially 30... Qf7. I needed almost 10 minutes (looking at other side lines as well) to find 31.Qd8, winning.
Dec-08-21  landshark: <al wazir>
Your 3-move Q maneuver is indeed a marvelous sight. It reminded me of the great NBA basketball games of the 1980's between the Boston Celtics and the LA Lakers where you saw the ball rifled around the perimeter like that and then jammed in down low for the dunk.
Dec-08-21
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop and a knight.

The black queen protects the pawn on b5 and the dark squares around the king. Therefore, 30.Bxb5:

A) 30... Qxb5 31.Bh6 and mate in two.

B) 30... Qf7 31.Bxe8 Qxe8 32.Qd8 (32.Bh6 Qe1+ 33.Kh2 Qe5+ 34.Qxe5 dxe5 would take longer) 32... Kf8 33.Bh6+ wins decisive material.

C) 30... Qe7 31.Qxe7 Nxe7 32.Bxe8 wins decisive material.

Dec-08-21
Premium Chessgames Member
  agb2002: My line B should read

B) 30... Qf7 31.Qd8 (31.Bxe8 Qxe8 32.Bh6 ...

I need another coffee.

Dec-08-21
Premium Chessgames Member
  agb2002: This tactic reminds me of Spassky vs Fischer, 1972
Dec-08-21
Premium Chessgames Member
  HeMateMe: I spent 2 minutes looking at the attack by Q-e6 or e7 after BxP, before noticing the much simpler solution of B-h6.
Dec-08-21  AlicesKnight: Found 30.Bxb5, but expected ... Qf7; 31.Bxe8 then leaves Black the basic choice of exchanging Qs (a piece down) or recapturing on e8 with 32.Bh6 and a quick finish.
Dec-08-21  saturn2: After 19...f5 20.Nf6+ black lost the fianchetto bishop and had weak black squares around the king which were exploited later by whites B and Q
Dec-08-21  awfulhangover: Easy, but spent time to see if Qf7 saved the game for black. Qxb5 was bad.
Dec-08-21
Premium Chessgames Member
  chrisowen: Embibe v it ok us alinks Bxb5 gadfly abracadabra v i mob boa it ta vin embibe v it ok auldus castigated it vat in nut jaw it i be it ok marquis v flush pox it calls gain it ep hut rub it whiff no v muddy it z x flimsy man gloat vet it beneath boned it beg ha v it bees diffuse ie gobble v icicle finish doh ha douche v bag c monk it har v it in a hi it rights ko bleed it other v cuddle cabbed it church in v cerebus v it seem gi v it shade i favour reek it ah c v it a no vin dock butchered it avarices v i doled it i v madden it muggled it bed c green v baize it griffon evicts her v gift cad v cod rode it goofman vid c ai v candid c rod booed it vein fig c fabled it crowned it charged it dig z it he chummed it dm good it decked it hi doot it cobble bebo c v cab v bad v it he no z no lerk well it bearfoot v set toil v hi it third degree kid lights v noel dimmer v it claps v com mon re no browkid metim attargaiba ho v i lid march ma love it welt knight winning Bxb5 clock;

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