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Marko Rubil vs Darko Feletar
Pula Open (2010), Pula CRO, rd 7, Jun-24
Sicilian Defense: Dragon Variation. General (B70)  ·  0-1


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sac: 29...Qxb2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 4 ·  Later Kibitzing>
Dec-15-11  sevenseaman: Black is only a P off the pace but this is the kind of position where having the move is the all important advantage. You just cannot let go of a forced continuation, even at some cost.

<29...Qxb2+ 30. Kxb2 Rf2+ 31. Kc1 Nb3+. 32. Kb1 Ra1#>

Only the White K ever moved. And every time because it <had to>.

This is also one of those positions where one would like to physically move pieces in order to to be sure of extracting a mate. That is simply no no, OTB.

This is the most efficient combination I believe. I feel confident of finding at least one more combination, perhaps a little dilatory.

We shall see when we can physically move pieces.

Premium Chessgames Member
  morfishine: After <29...Qxb2+> white is caught in a mating net: 30.Kxb2 Rf2++ (the power of the double-check: two pieces are activated at the same time) And now if:

(1) 31.Kb1 Ra1 mate or

(2) 31.Kc1 Ra1+ 32.Bb1 Nb3 mate or

(3) 31.Kc1 Nb3+ 32.Kb1 Ra1 mate or

(4) 31.Kc1 Bb2+ Kb1 32.Ra1 mate

The coordination of the Black pieces is striking; All play vital roles, whether attacking or sealing off any escape routes the White King may ponder

<rodchuck> True, after 29...Rxg6 Black wins a piece, but White can "muddy the waters" with 30.Bxg7+ Kxg7 31.Rf7+ Kxf7 32.Qh7+

click for larger view

Here 32...Kf6 or Kf8 or Rg7 is met by 33.Rf1+

<oneone> Starting with <29.Qa2+> still works: just play <30.Qxb2+> one move later than was actually played

Premium Chessgames Member
  agb2002: Black has a bishop and a knight fo the bishop pair and a pawn.

White threatens 30.Bxg7+ and mate in two.

The white king is protected by the pawn on b2 only. The possibility of a double check with tempo suggests 29... Qxb2+ 30.Kxb2 Rf2+ 31.Kc1 (31.Kb1 Ra1#) 31... Ra1+ 32.Bb1 Nb3# (or 32... Bb2#).

Premium Chessgames Member
  rhickma4: Shows the power of a double check.

29...Qxb2+ 30.Kxb2 Rf2+ 31.Kc1 Nb3+ 32.Kb1 Ra1#

Premium Chessgames Member
  gofer: The old "Queen Sac, followed by a double check, rook check and knight" mate. A classic that took seconds, unlike yesterday's which took a while to see...

<29 ... Qxb2+>
<30 Kxb2 Rf2++>
<31 Kc1 Rb1+>
<32 Bb1 Nb3#>

Dec-15-11  mandy64: I did not see 29..Qxb2, my idea was the simple 29..Rxg6, capturing the bishop and threating with mate. After 30.Bxg7+ Kxg7 black has a piece for a pawn, wihich should be enough to win the game.
Premium Chessgames Member
  morfishine: oops missed 31...Qxf7. 29...Rxg6 doesn't look so bad after all
Dec-15-11  TomOhio: Is it really a Queen 'sac' when it's the only move that saves you... and leads to a forced win?

Took me a while, but I finally got around to it on this one...

Premium Chessgames Member
  sandtime: funny old game is chess, Thursday's puzzle took half the time of Tuesday's.
Dec-15-11  newton296: took me about 1 minute to find Qxb3+ Kxb3 Rf2+ Kc1 Ra1+ Bb1 Bb2++

I was a little surprised to see Nb3++ , I guess I missed that but hey, I had mate 1 move later so I'll take it!

Premium Chessgames Member
  The HeavenSmile: Black has a seriously unfortunate surname. I remember someone composed a list of funny chess player surnames, I hope its on there
Premium Chessgames Member
  lost in space: Fond this (in opposite to yesterday) very quickly:

29...Qxb2 30. Kxb2 Rf2+ 31. Kc1
(31. Kb1 Ra1#)

31...Nb3+ 32. Kb1 Ra1#

Dec-15-11  sfm: < newton296: I was a little surprised to see Nb3++ , I guess I missed that but hey, I had mate 1 move later so I'll take it!> I strongly prefer your mate with Bb2#. There's something noble over mates delivered with bishops.
Dec-15-11  sevenseaman: Darko beat Marko with an unique set of moves starting with 29...Qxb2.

I have been trying to find another combination but nothing fancy works. White is able to lift his h6B to defend against any continuity of checks by Black. That B lift is a discovered check. I am persuaded 29...Qxb2 is the only line that succeeds.

Dec-15-11  polarx: 29... Rxg6
30 Bxg7+ Kxg7
31 Qd5 Qxd5
32 Rxd5 Rxg4

Looks good for black but of course it's not mate.

<oneone> I did same. Good thing here is, in actual play, if you checked once more before moving 30.Rf2+, you could still go back to the original position. Otherwise banging your head on a door seems the only way to go.

Dec-15-11  solskytz: Easy!! Saw it right away... folllowing Nimzowitsch lesson on "the driving power of a double check"

I usually look for these in my own games - especially the blitzes - as a highly effective (often shocking) way to conclude a game. Cheers!

Dec-15-11  dfcx: Easier than Tuesday or Wednesday's, saw it in a few seconds. 29...Qxb2
30 Kxb2 Rf2+
31 Kb1 Ra1++
or 31 Kc1 Ra1+
32 Bb1 Nb3++
Dec-15-11  CHESSTTCAMPS: White is up a pawn and both kings are in serious jeopardy. This one boils down to threat recognition: white threatens 30.Bxg7+ Kxg7 31.Qh7+ Kf8 32.Qh8+ Qg8 33.Rxf6+ forcing mate. If black considers non-checking moves, 29... Rxf1?? loses to 30.Bxg7+ Kg8 31.Qh7+ Kf8 32.Qh8+ Qg8 33.Rxf1+ forcing mate. Similarly bad is 29... Bxh6?? 30.Qxh6+ leading to the same forced mate. Therefore, black must execute a forced mate before white can get started. The Bg7-Rf6 battery suggests a way to get it done:

29... Qxb2+!! 30.Kxb2 Rf2+ 31.Kc1(Kb1 Ra1#) Ra1+ 32.Bb1 Rxb2#

Premium Chessgames Member
  Penguincw: Really nice way to escape mate.
Dec-15-11  Old Wolf: Easier than Monday's and Tuesday's..
Premium Chessgames Member
  paulalbert: Relatively easy for the experienced , but very useful for instructive idea of using double check to prevent a piece giving discovered check from being taken, as well as giving up queen with check to create the opportunity, all within the context of defending against your opponent's own discovery threats. This kind of position is great for demonstrating both the complex beauty and logic of chess, which is why I love the game.
Premium Chessgames Member
  pittpanther: This was easier for me than some Thursdays, a very nice combination. I think Tuesday's puzzle was still the hardest this week!
Dec-15-11  Patriot: Black is in desperation mode.

29...Qxb2+ 30.Kxb2 Rf2+ 31.Kc1 (31.Kb1 Ra1#) Ra1+ 32.Bb1 Bb2#

Dec-15-11  benjinathan: darned sweet combo
Premium Chessgames Member
  SuperPatzer77: What a lovely combination by Darko Feletar (Black)!!!

29...Qxb2+!!, 30. Kxb2 Rf2+! (double check), 31. Kc1 Nb3+ (31...Ra1+, 32. Bb1 Bb2# ), 32. Kb1 Ra1# 0-1

Excellent queen sacrifice by Black!


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