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Robert Fontaine vs Andrei Sokolov
French Championship (2007), Aix-les-Bains FRA, rd 1, Aug-13
Bogo-Indian Defense: Nimzowitsch Variation (E11)  ·  0-1


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sac: 29...Qxh2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
May-04-11  MaxxLange: I calculated:

29...Qxh2+ 30 Rxh2 Rxh2+ 31 Kg1 Rg2+ 32 Kf1 Nh2+ 33 Ke1 f1=Q#


May-04-11  Patriot: <newton296> I think you're right. 29...Qxh2+ 30.Rxh2 Rxh2+ 31.Kg1 f2+ 32.Kf1 Ra2 seems to be winning.

A) 33.Rd8+ Kh7 34.Qb1+ g6 35.Qxa2 Nxe3+ 36.Ke2 f1=Q+ 37.Kxe3 Rxa2

B) 33.Nd2 Nxe3+ 34.Ke2 f1=Q+ 35.Kxe3 Qe2+ (probably not best but should win easily)

C) 33.Qd2 Nxe3+!

C.1) 34.Qxe3 Rh1+ 35.Kg2 f1=Q#

C.2) 34.Ke2 f1=Q+ 35.Kxe3 Re2+ followed by 36...Rxd2+

D) 33.Rd2 Nxe3+ 34.Ke2 f1=Q+ 35.Kxe3 Re2+ should win easily.

I'm not seeing a defense.

May-04-11  Kruglov: IMHO, not worthy of Wednesday. Knight and pawn are poised to support heavy pieces on the second rank, which queen and rook dominate. The most difficult part is to find the queen sac on Qxh2+. Then all Black needs to do is keep checking until checkmate.
May-04-11  Funicular: I saw Qxh2, Rxh2, Rxh2, Kg1, f2+, Kf1, Rh1+, Ke2, f1=Q+ and the rest

I find Ra2 not as good, since Rd8+ Kh7, Qb1+ wins the rook. Of course is equally lost for white, but it's longer play. Let's Face it: on a 2 minute blitz we'd all go for queening f pawn.

Another thing: looking at the puzzle from white's point of view it's harder to see Ra2

May-04-11  Patriot: <Funicular> <I find Ra2 not as good, since Rd8+ Kh7, Qb1+ wins the rook.>

I'm assuming you mean instead of Rh1+ in your sequence? That loses for white. See my previous post (line A).

Premium Chessgames Member
  Domdaniel: <Once> - < For every person who struggles to build a wall with their sweat and labour, there is another who only wants to spray graffiti on it, or knock it down.>

Well, yes. But some walls deserve to be knocked down ... in fact, if you shuffle your metaphor deck, this puzzle itself can be seen as an exercise in demolition, not building.

That's my bit of graffiti.

May-04-11  M.Hassan: "Medium/Easy" Black to play 29...?
30.Rxh2 Rxh2+
31.Kg1 f2+
32.Kf1 Re8
33.Rd3 Rh1+
34.Kg2 Rxc1
35.Nxc1 Rxe3
36.Rxe3 Nxe3
37.Kxf2 Ng4
Black is a pawn up in a Knight end game. I think I must have missed a key move somewhere. "medium/easy" should not take this long!! Have to check
May-04-11  newton296: < Funicular: I saw Qxh2, Rxh2, Rxh2, Kg1, f2+, Kf1, Rh1+, Ke2, f1=Q+ and the rest

I find Ra2 not as good,>

doesn't Rxe1 taking the Q refute the above line? white is simply winning

May-04-11  gofer: Okay, <Once>, if we want to keep flogging... ...what about

<29 ... Qxh2+>
<30 Rxh2+ Rxh2+>
<31 Kg1 Raa2!>
<32 Rd8+ Kh7>
<33 Qb1+ Rac2!>

Now the exchange is on c2 and not a2 which makes Nb3 very difficult to defend!

<34 Qxc2 Rxc2>

click for larger view

May-04-11  Ghuzultyy: Now this is strange, wednesday puzzle, mate with force.

29...Qxh2+ 30.Rxh2 Rxh2+ 31.Kg1 Rg2+ 32.Kf1 Nh2+ 33.Ke1 Re2#

White should have captured the BQ instead of 28.Bxf3 or 29.Red1

Premium Chessgames Member
  kevin86: i was looking for an Arabian mate and found a variation thereof. Here,the pawn helps defending rook,while the knight prevents the king's exit.
Premium Chessgames Member
  doubledrooks: It's mate in five after 29...Qxh2+ 30. Rxh2 Rxh2+ 31. Kg1 Rg2+ 32. Kf1 (32. Kh1 Nf2#) Nh2+ 33. Ke1 Re2#.
Premium Chessgames Member
  Jimfromprovidence: I went in a completely different, overly complicated direction.

My line is 29...R8a3!?, seeing 30 Rxf2 Nxf2+ 31 Kg1 Nxh3+ 32 Kh1 Rxb3.

click for larger view

The threat is 33...Rg2 (seeing 34 ...Nf2#).

I really don't know if it all works out, however.

May-04-11  YouRang: Rats, I missed the pretty forced mate. But I think I at least found a convincing win in <29...Qxe3>, threatening ...Qxb3 and ...Nf2+.

I don't see anything better for white than <30.Rxa2 Rxa2 31.Qxe3> and then <31...Nxe3>, which attacks the Rd1 as well as guarding the promotion square at f1.

After moving the rook, I don't see how white stops the promotion, e.g. <32.Rd8+ Kh7 33.Rd2 f2!>

May-04-11  BOSTER: <Once>
<For every person who struggles to build a wall...there is another who only wants... knock it down>. <Domdaniel> <But some walls deserve to be knocked down>. I guess that idea to knock down the Berlin Wall was much better that to build it.
May-04-11  sevenseaman: <jimforprovidence> 29...Ra3 has a catch but I am not sure, seeing its late here.

30. Rd8+ Kh7 31. Qb1+ Rc2 32. R1d2 Qf1+ 33. Qxf1 Rxd2 34. Nxd2 and White seems to have survived the tsunami.

If there is a catch I will analyze it tomorrow.

May-04-11  cyclon: 29. -Qxh2+ ( -Qg2+?) and cufflinks in view of 30.Rxh2 Rxh2+ 31.Kg1 Rg2+ 32.Kf1 (Kh1 Nf2X) -Nh2+ 33.Ke1 Re2X.
May-04-11  newton296: <YouRang: Rats, I missed the pretty forced mate. But I think I at least found a convincing win in <29...Qxe3>, threatening ...Qxb3 and ...Nf2+>

I think your right, ...Qxe3 was the first I considered and most obvious move to get the Q out of danger and grab a pawn on the same move. I don't see any good moves for white to stop the f pawn from promoting soon.

May-04-11  redorc19: I saw up to 31. Kg1 but missed 31...Rg2+ forcing mate. I thought that there would be some form of easy counterplay I missed, but unfortunately my lazyness didn't pay off. Blacks 31st move just seems like a patzer's kind of useless check which instructors warn us woodpushers about...
May-04-11  alexrawlings: Nice puzzle, which I'm pleased to say I got. I wonder if we'll see 27.. Bf3!! as a Sat or Sun puzzle at a later date. I never would have played that OTB!
May-04-11  MountainMatt: Another Wednesday puzzle stops me cold. I'm so glad God loves even His mediocre children!
May-04-11  nolanryan: i believe white resigned in this position because she was concerned about lack of places to put her king
Premium Chessgames Member
  Once: <Domdaniel> <BOSTER> That's precisely the point!

We may <think> that the only thing we can build is something physical like a wall or a car. But the reality is that building takes many forms...

... In the song "one piece at a time" the hero thinks he is building his dream car. In fact, the car is a mismatched mess of pieces from different years. The success of the story is two-fold - first, that he carries out his plan and secondly that he and his wife accept the resulting monstrosity with good grace and a sense of humour.

... we can build a combination to destroy the opponent's position, as in today's POTD.

... graffiti can sometimes be more positive than a dull wall, especially if it is as artistic as a Banksy.

...tearing down a wall can itself be an act of rebuilding - eg to tear down the Berlin Wall to build or rebuild a nation.

...helpful and constructive kibitzing that builds on what has been said before and doesn't try to criticise or detract.

May-04-11  stst: Basically have to limit the WK's movement:
29.... Qxh2+
30.R2xQ R2xR+
31.Kg1 Rg2+
If 32.Kh1 Nf2#
If 32.Kf1 Nh2+
33.Ke1 Re2#
Aug-13-16  SpiritedReposte: Such an instructive mating combination.
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