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Later Kibitzing> |
Apr-17-11
 | | Phony Benoni: 
click for larger viewI did consider <20.g6>; it opens up a number of lines for White while undermining the siege point on e6. It felt like a good move, but I can't say I saw much of what followed. |
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| Apr-17-11 | | rsnelgrove: amazing combination!! |
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| Apr-17-11 | | dzechiel: White to move (20?). Material even. "Insane."
Don't know how we got here, but you gotta like white's position. He's castled and all of his pieces have been developed. Black is NOT castled, and his queen and both rooks are still cooling their heels. Looking around for candidate moves, I have considered (in the order I noticed the moves): - 20 g6
- 20 Bxe6
Every time I look for another move, my eye quickly wanders back to 20 g6
it just "feels" right. Threatening 21 gxf7+ just has to be good, and the obvious way black can prevent that move is with 20...Bxg6
True, black could play 20...fxg6 instead, but that allows 21 Bxe6, which seems unpleasant for black. But now we really start to throw material onto the fire... 21 Rxg6 fxg6 22 Bxe6
Hmm..., this isn't going as well as I expected. I think I'm going to give up on this "insane" position early this evening. Time to check and see how this game actually ended.
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Once again, I think we need some adjective stronger than "insane". |
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| Apr-17-11 | | rilkefan: I'm looking at 20.g6 Bxg6 21.Rxg6 fxg6 22.Bxe6. I don't think 20...0-0 is survivable. I don't know if 20...fxg6 helps, but black's king sure looks exposed. Anyway, in the above line 22...Nxe6 23.Qxe6 Qe7 loses to Qxd6, so ...Kf8. And ... white's running low on pieces, and can't hold the e-file. 21.Bxe6, to pick up the g6 bishop? White could stand to get his knight and bishop involved too. But black still looks pretty solid to me. |
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| Apr-17-11 | | rilkefan: I sure hope someone can explain 22.d5 at a patzer level. It's not to play Nd4. Maybe the idea is 22...cd 23.c4 to plant the pawn on d5 (presumably black can't do anything to improve his position too much in the meantime) or play Qxc4 after dc? Certainly after 22...Qe8 23.Qc4 "solid" doesn't leap to mind anymore, but again 23...cd. I guess the point is some improvement on 24.Bxd5 Qd7 25.Rxg6 Nxd5 26.Qxd5 fxg6 27.Re6 Rd8 28.Rxf6+ Kg7. |
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Apr-17-11
 | | An Englishman: Good Evening: There are *so* many variations to consider in this position, even if you spot the move (and I didn't). Have the silicon monsters chewed on this game? |
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| Apr-17-11 | | goodevans: I saw <20 g6 Bxg6 21 Bxe6> but not <22 d5> so I don't think that's enough to claim the full point and my first 7/7 for months. Too bad. Back to the drawing board. :( |
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Apr-17-11
 | | scormus: 20 g6 and if ... fxg6 then 21 Bxd6 is as much as I could manage before I decide to look at the game. After 20 ... Bxg6 I was not sure. Was a bit surprised not 21 Rxg6 |
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| Apr-17-11 | | tacticalmonster: Needless to say, I did not get today puzzle. I got to 20 g6 Bxg6 21 Bxe6 and after that I simply give up because there are too many variations. What's going on here? It seems recently CG frequently misjudged the level of difficulty of their puzzles. As far as I know, CG just keeping giving us puzzles that are not even " puzzles ". |
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Apr-17-11
| | scormus: <An Englishman:...Have the silicon monsters chewed on this game?>
Mine is now and finding it quite a mouthful to chew |
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| Apr-17-11 | | Once: Much as the same as <Dzechiel> and I suspect many others today. The two moves that jump out are 20. g6 and 20. Bxe6 - maybe I can play both? And then perhaps d5 and Nd4 to pile up on e6. 20. g6 appeals because it overworks the f7 pawn. After 20...Bxg6, we get to here: 
click for larger viewAnd the f7 pawn is defending both the Bg6 and the e6 pawn. That's got to be worth something. Then what? I guess we have to sac on e6 straight away before black can unwind his pieces. So that gives us 21. Bxe6 
click for larger viewNow what? Black has lots of choices - 21...Kf8 (as played in the game), 21...Nxe6 (seems risky to walk into a pin), 21...Qe7. I can't see a definite winning plan for white, but I do sort of like his position. When your opponent has an uncastled king and you have strongly placed pieces, you should think about saccing pawns to open up the position. But calculate lines in this mess? Nope, not this soldier. It looks fun, but I am not convinced that it works. Rewind back to our starting position and we see that white has better development. A quiet move like 20. Qd3 (Fritz's favourite after a few minutes thought) might actually be a more pragmatic choice. <dzechiel: ... Once again, I think we need some adjective stronger than "insane".> <tacticalmonster: ...I got to 20 g6 Bxg6 21 Bxe6 and after that I simply give up because there are too many variations.> Too wise comments which just about sum up it for me too. |
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| Apr-17-11 | | chessaddict25: i am wise enough to not even start calculating this mess... |
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| Apr-17-11 | | luzhin: A further point in the game continuation is that if Black plays the very plausible 24...Bf5 then 25.e7+! Bxe7 26.Bh6+ Rxh6 27.Rg8 mate. |
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| Apr-17-11 | | parmandil: As many others, I was immediately drawn to 20.g6, but after 20...Bxg6 I wanted to continue with 21.Rxg6 fxg6 22.Bxe6, which gives black some other defensive options than the game. For practical purposes, I don't think it is necessary to see 22.d5 and 23.Qc4 in order to decide on 20.g6. Black's 21...Kf8 is just an attempt to get into a worse but perhaps holdable position. White can simply play 22.Bb3 and be satisfied with what he has accomplished in two short moves - ruining both the black pawn structure and king position. End games will be favorable to white, the pawn on h4 is weak, and there are still possibilities for an attack on the black king. Finding 23.d5 and 24.Qc4 is really a new puzzle, on how to exploit the clear white advantage in a direct attack. The real question to resolve at move 20 is what to do if black does not cop out with 21...Kf8, but accepts the challenge with 21...Nxe6. What we want to do, of course, is 22.Rxg6 fxg6 23.Qxe6+ Kf8 (not 23...Be7 24.Qxf6), and again there is a complex position with several branches to consider. One possibility is 24.Qg4 g5 25.Nxg5 fg5 26.Qf5+ Kg7 27.Re6 Rh6 28.Bxg5 and white must be close to winning. But there might be better ways for black to put up a resistance here, and I don't feel very confident in these lines. |
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| Apr-17-11 | | patzer2: For today's Sunday puzzle solution, the decoy sham sacrifice 20. g6!! Bxg6 sets up the demolition combination with 21. Bxe6!  .Basically, it's a sacrifice for positional advantage. |
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| Apr-17-11 | | Patriot: There is a principle that says when you are developed and your opponent's king is still in the center, find a way to tear it open. I looked and just didn't see the tactical means to do so. I couldn't make 20.Bxe6 work. Then I looked at 20.gxf6, although it violates the above principle. I also looked at 20.g6 Bxg6 and it wasn't clear how to get thru. Nice problem! |
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| Apr-17-11 | | computer chess guy: Rybka 3 likes 21. .. ♕e7, considering this only  for White. |
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| Apr-17-11 | | Keith Dow: I looked through the opening explorer and got the following impossible game. 1. e4 c5
2. Nf3 d6
3. d4 cxd4
4. Nxd4 Nf6
5. Nc3 a6
And now for the fun.
6. Be3 Ng4
7. Bc1 Nf6
8. Be3 Ng4
9. Bc1 Nf6
10. Be3 Ng4
11. Bc1 Nf6
12. Be3 Ng4
13. Bc1 Nf6
14. Be3 Ng4
15. Bc1 Nf6
16. Be3 Ng4
17. Bc1 Nf6
18. Be3 Ng4
19. Bc1 Nf6
20. Be3 |
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| Apr-17-11 | | thegoodanarchist: legitimate Sunday puzzle! Very tough. |
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| Apr-17-11 | | lost in space: I saw the first few moves, especially due to the fact that 20.g6 "feels" right. But I was far sway from seeing a clear solution. Only alternative I had a look at was 20. Bxe6.
Hoping for Monday |
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Apr-17-11
 | | Jimfromprovidence: I like the move put forth by <computer chess guy> 21...Qd7.
click for larger view Now white has to spend a tempo to move the bishop on e6, then black forces a queen trade. So, if 22 Bb3 Qxe2 23 Rxe2+, black connect his rooks with 23...Kd7. 
click for larger view |
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| Apr-17-11 | | cracknik: I got the first move. But that's it. |
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Apr-17-11
 | | eternaloptimist: i missed it. this is the 1st time that i've missed a combo since before monday. i kept looking @ moves like 20.♗xe6 & 20.♙d5. i briefly looked @ the correct move 20.♙g6!!, but i didn't c much there when i was analyzing it. i overlooked the potential 4 this move. this is definitely an ingenious & long combo by bologan...a great job of calculation on his part. |
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| Apr-17-11 | | agb2002: From a Caro-Kann game, I think.
The material is even.
Black would probably consider the maneuver ... Nd5 and ... Nf4. Three pieces converge on e6. This suggests 21.g6, to undermine e6, but after 21... Bxg6 22.Bxe6 Nxe6 23.Rxg6 fxg6 24.Qxe6+ Kf8 (24... Qe7 25.Qxd6; 24... Be7 25.Qxf6) White's attack seems to run out steam. I don't know. I probably would try 21.g6 Bxg6 22.Rg4 to take the pawn on h4 and then push the h-pawn. If 22... f5 then 23.Rxg6 fxg6 24.Bxe6 looks promising (24... Nxe6 25.Qxe6+ Kf8 26.Qxg6 with multiple threats: 27.Bh6+, 27.Qxf5+, 27.Ng5, etc.). |
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Apr-17-11
| | scormus: I never heard of the Scandinavian defense before, is it what we used to call Centre Counter Gambit and told our school team mates not to play. Looks like W gets one of those nice attacking positions typical against the Sicilian, only B doesnt get the open c-file |
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Kibitzing
sac: 23.Qc4