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Matias Michailov vs Daniel Carlo
Pan-American Junior Championship (2009), Montevideo URU, rd 9, Oct-12
Sicilian Defense: Kan. Modern Variation (B42)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-03-19  stacase:   
  White to move. 19...

I would have moved 22...Bh3+ and trade the Rooks on move 23

Trading Rooks 22...Rf7 was played.

How far are you supposed to see ahead on these puzzles?

  

Oct-03-19  Walter Glattke: 24.-Kg8 25.Qd8+ Qf8 26.Qxf8#, 21.-Bf6 22.gxh7+ Kxh7 23.Rxf6 mating, 20.-Kh8 21.Qxh4 f6 22.Qf6+ Rg7 23.Qxf8+ Rg8 26.Qh6 Qg7 27.Qxg7+ Rxg7 28.f6 Rf7 29.Bh6 wins. The crux is queen lose on f8.
Oct-03-19
Premium Chessgames Member
  Gilmoy: <stacase: I would have moved [23.Bh6]+ and trade the Rooks on move [24]> But then 23..Kxf7 lets Black escape, since Bh6 blocks the Q from Qxh7+.


click for larger view

<23.Rxf7+> is correct, because now 23..Kxf7 24.Qxh7+ skewers the loose Qc7.


click for larger view

Oct-03-19  1stboard: Nice attack by white

Black 24 Kh8

White 25 Qd8 folded by Qxc6 and ruin and destruction ..... ( Qe5 )

Resignation clearly in order

Oct-03-19  mel gibson: That's an easy one.
I saw it straight away.

Stockfish 10 says:

19. Rxg7+

(19. Rxg7+
(♖g3xg7+ ♔g8xg7 ♕e2-g4+ ♔g7-h8 ♕g4xh4 f7-f6 ♕h4xf6+ ♔h8-g8 c4-c5 ♕c7-d8 ♗d3-c4+ d6-d5 ♕f6xd8 ♖d7xd8 e4xd5 ♖b8-b4 d5xc6+ ♖b4xc4 b3xc4 ♖d8-d3 ♘c3-d5 ♔g8-g7 c6-c7 a6-a5 ♘d5-e7 ♗c8-a6 c7-c8♕ ♗a6xc8 ♘e7xc8 ♖d3xe3 c5-c6 ♖e3-d3 c6-c7 ♖d3-d7 ♘c8-d6 ♖d7xc7 ♘d6-e8+ ♔g7-f7 ♘e8xc7 ♘f8-d7 ♘c7-e6 h7-h6 ♘e6-d8+ ♔f7-f6 ♘d8-c6 a5-a4 ♖f1-d1 ♘d7-b6 ♖d1-d6+ ♔f6-g5 ♘c6xe5 ♔g5xf5 ♖d6xh6 ♔f5xe5 ♖h6xb6) +9.41/38 315)

score for White +9.41 depth 38

Oct-03-19  malt: Got 19.R:g7+ K:g7 20.Qg4+ Kh8
21.Q:h4 Qd8 22.Bg5 Qe8 23.Bf6+ Kg8 24.Qh6 Ne6 25.Rf3 Qf8 26.Rg3+ Ng7 27.R:g7+ Q:g7

(27...Kh8 28.Q:h7# )

28.Q:g7#

Oct-03-19  saturn2: I saw the gameline till move 22.
and that if 20..Kh8 white will have Bg5 soon.
Oct-03-19  patzer2: Because (19. ?) was a Thursday puzzle, which probably involves a combination with a piece sacrifice (a.k.a. sham sacrifice), I had no problem finding the solution 19. Rxg7+! Kxg7 20. Qg4+ +- (+8.71 @ 42 ply, Stockfish 10).

I didn't bother trying to calculate deeply beyond that point. With Black's weak King position and poorly developed pieces, I figured this demolition tactic must give White a decisive attack.

P.S.: Black's game started to go bad with 13...Nb7?, allowing 14. f5 ± (+ 0.88 @ 31 ply, Stockfish 10).

Instead, 13...exf4 = (+0.08 @ 31 ply, Stockfish 10) or 13...Bg4 = (+0.20 @ 31 ply, Stockfish 10) would have given Black even chances.

Oct-03-19  TheaN: I also stopped after 19.Rxg7+ Kxg7 20.Qg4+, but it's not <that> easy actually. 20....Ng6 speeds it for Black because White picks up two pieces for the rook and one of the Black rooks is horrible (Rb8 is on a half open b-file with no real prospects).

White has to be careful after 20....Kh8. 21.Qxh4 +- is the obvious but only move. The greedy attack 21.Bh6? Bf6 22.Bxf8 allows Black back into the game (and possibly the better of it) with 22....Bb7 23.Bh6 Rg8= to ⩱.

Oct-03-19  stacase: <Gilmoy: <stacase: I would have moved [23.Bh6]+ and trade the Rooks on move [24]> But then 23..Kxf7 lets Black escape, since Bh6 blocks the Q from Qxh7+. <23.Rxf7+> is correct, because now 23..Kxf7 24.Qxh7+ skewers the loose Qc7.>

Thanks for the reply and analysis. I was in too much of a hurry to be first to get the move numbers right duh!

That aside, by move 23 White was a piece up and at that point the strategy is to force trades but I saw that White could develop his Bishop first. So take the Rook then say check or the other way around. It was a coin flip for me at that point. I do these things like I'm playing the game and then see if that's the move that was made. I haven't played much chess since 1996 when I had a 1400+ rating. So I didn't see it and said check first. "Patzer sees check says check" probably applies. I like those little chessisms you get when you post. My own personal rule is I only post if I get the first move.

Oct-03-19  Thief: <chrisowen: Wiggy vinty guvvy rg7um gruel reuvs vintu flung gregg guvvy gluer 4 it ok haver overt kg7um gruel reuvs qg4um gruel reuvs ng6um gregg guvvy pg6um gumpy pg6um gluer qh4um heury rf7um flung lucks it be 22Bb7 vesty bindy crock buggy 6 it ok haver overt rf7um flung qf7um fleur clued flung budum mater giver 4 it ok haver overt lucks it fin 23Kxf7 vesty becky clued flung budum mater fiver lucks it hive 24.Bh6+ vesty iflug huffy budum mater giver 3 it ok haver overt mucky vicky it's vasty offal pinup jours vinty match withy it's vasty vinty foily vinty jurys dutch vinty phtum panny rg7um gruel reuvs vintu gruff reuvs gregg mummy vintu ducky clued lucks it a hivehood 18Bh4 vesty cuffy bugon heury 3 4 it ok haver overt lucks it finishof 18Bf6 vesty cuffy bugon fluff 1 2 it ok haver overt umsum fleck icyum deepy divey agluv wiggy rg7um gruel;> So I'm not the only one who is crazy around here.
Oct-03-19  Nietzowitsch: <Thief> Reading such a piece of junk is abysmal stupidity, not to mention commenting on it.
Oct-03-19  Thief: <Nietzowitsch: <Thief> Reading such a piece of junk is abysmal stupidity, not to mention commenting on it.> I didn't say I've actually read the whole thing or understood any of it. But you do get a few perks once you've flown over the cuckoo's nest like me (and maybe even chrisowen, though I don't speak for him).
Oct-03-19  Ratt Boy: <Thief: <chrisowen: Wiggy vinty guvvy…>

I thought we had a respite of a few months from this chrisowen character. Bummer that it's back.

Oct-03-19
Premium Chessgames Member
  thegoodanarchist: Easy for a Thursday.

Black resigned because of 24...Kh8 25.Qd8+ Qg8 26.Qf6+ and checkmate next

Oct-03-19
Premium Chessgames Member
  agb2002: Black threatens Bxg3 and also has Bf6 to solidify the castle.

White counts on the queen, two rooks a bishop and a pawn to attack the black king. This and Black's threats suggest 19.Rxg7+ Kxh8 (19... Kh8 20.Qg4 Ng6 21.fxg6 Kxg7 22.gxh7+ Kxh7 23.Qxh4+ wins decisive material) 20.Qg4+:

A) 20... Kh8 21.Qxh4 (21.Bh6 Bf6 22.Bxf8 Qd8) 21... f6 (White threatened 22.f6) 22.Qxf6+ Kg8 (22... Rg7 23.Qxf8+ wins decisive material) 23.Rf3 followed by Bh6 looks very good for White.

B) 20... Kf6 21.Qxh4+ Kg7 22.Bh6+ Kg8 (22... Kh8 23.Qf6+ Kg8 24.Qg7#) 23.Qf6 Ne6 24.fxe6 fxe6 25.Qf8#.

C) 20... Ng6 21.fxg6 Bf6 22.gxh7+ Kxh7 (22... Kh8 23.Qg8#) 23.Rf3 Bg7 24.f6 wins.

D) 20... Bg5 21.Qxg5+ Kh8 22.Qf6+ Kg8 23.Bh6 transposes to B.

Oct-03-19  Hercdon: Not many comments on this game of the day
Oct-03-19  JimNorCal: "Not many comments"

Well, I'd say the audience for this web site is becoming more selective

Oct-03-19  RandomVisitor: After 5.Bd3 the computer likes the next 6 moves played, if you include the transposition of 5...Nf6 and 6...Qc7:


click for larger view

Stockfish_19100109_x64_modern:

<45/69 8:30:50 +0.35 5...Nf6 6.0-0 Qc7 7.Qe2 d6 8.c4> Nbd7 9.f4 g6 10.f5 Bg7 11.fxe6 Ne5 12.exf7+ Nxf7 13.Kh1 0-0 14.Nc3 Bg4 15.Qc2 Ne5 16.Bg5 Rae8 17.Bxf6 Rxf6 18.Rxf6 Bxf6 19.Nd5 Qd8 20.Be2 Nf7 21.Nf3 Bg7 22.Rf1 Ng5 23.Nxg5 Qxg5 24.Bxg4 Qxg4 25.Qf2 Qxe4 26.Qf7+ Kh8 27.Nf6 Bxf6 28.Qxf6+ Kg8 29.Qf7+ Kh8 30.b3 Qe7 31.g3 g5 32.h3 Qe5 33.Qxb7 Qxg3 34.Qg2

45/74 8:30:50 +0.45 5...Bc5 6.Nb3 Ba7 7.Qe2 d6 8.Be3 e5 9.f4 Bxe3 10.Qxe3 exf4 11.Qxf4 Qf6 12.Qe3 Nc6 13.Nc3 Qh4+ 14.g3 Qh6 15.Qf4 Qxf4 16.gxf4 Nf6 17.0-0-0 Bg4 18.Rd2 0-0 19.Rg1 Bh5 20.Bc4 Rfe8 21.Re1 Rad8 22.Nd4 d5 23.Nxc6 bxc6 24.Bxa6 d4 25.e5 dxc3 26.Rxd8 Rxd8 27.exf6 cxb2+ 28.Kxb2 gxf6 29.h3 Bg6 30.Kc3

Oct-03-19  stacase: <Ratt Boy: <Thief: <chrisowen: Wiggy vinty guvvy…> I thought we had a respite of a few months from this chrisowen character. Bummer that it's back.>

Posting guidelines says:

2. No spamming, advertising, duplicate or nonsense posts.

Oct-03-19  JimNorCal: As stacase suggests: don't complain, file a whistle blower report.

No user that you complain to can do anything anyway.

Oct-03-19  RandomVisitor: After 8.c4 a case can be made that white has a small advantage:


click for larger view

Stockfish_19100109_x64_modern:

<47/66 3:41:00 +0.49 8...Nbd7 9.b3 Ne5> 10.Bc2 Be7 11.Bb2 0-0 12.Nc3 Ng6 13.a4 Bd7 14.Nd1 Rac8 15.Ne3 Rfe8 16.Rfd1 h5 17.Rd2 Nf4 18.Qf3 Ng6 19.Rad1 Qc5 20.Ne2 Bc6 21.Nf4 Qg5 22.Nxg6 Qxg6 23.Nd5 exd5 24.exd5 Bxd5 25.Qxd5 Qxc2 26.Rxc2 Nxd5 27.Rxd5 g6 28.f4 Rcd8 29.Kf2 f5 30.h3 h4 31.Rcd2 Kf7 32.Rd1

46/57 3:41:00 +0.54 8...Be7 9.f4 0-0 10.Nc3 Nc6 11.Nxc6 bxc6 12.Kh1 Bb7 13.e5 Nd7 14.exd6 Bxd6 15.Ne4 c5 16.Nxd6 Qxd6 17.b3 Rae8 18.Qc2 f5 19.Bb2 Nf6 20.Kg1 Rd8 21.Rad1 Qc6 22.h3 Rd7 23.Qf2 Rfd8 24.Bc2 Qc7 25.Rxd7 Rxd7 26.Qe2 Qc6 27.Be5 h6 28.Re1 Ne4 29.Bxe4 Qxe4 30.Qf2 Qd3 31.Qxc5 Qd2 32.Qf2 Qxf2+ 33.Kxf2 Rd2+ 34.Re2 Rxe2+ 35.Kxe2 Bxg2

Oct-04-19  mel gibson: <Oct-03-19 stacase: <Ratt Boy: <Thief: <chrisowen: Wiggy vinty guvvy…> I thought we had a respite of a few months from this chrisowen character. Bummer that it's back.>

Posting guidelines says:

2. No spamming, advertising, duplicate or nonsense posts.>

I just block him - I never see his spamming nonsense.

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