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Later Kibitzing> |
| May-23-15 | | goldfarbdj: I got the first three and a half moves, which is a lot better than I usually do with a Saturday puzzle. I saw that after 25. ... Kxg7 26. f6+, mate was more or less inevitable; I didn't look seriously at other black defenses, figuring that with a pawn for the Exchange and a huge attack white should be winning. |
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| May-23-15 | | dfcx: I see the following line:
22. Rxh7 Kxh7 23. Qh4+ Kg8 24. Bf6 Bg7 25. Bxg7 Kxg7 26. f6+ Kg8 27. Qh6 Qxd4+ 28. Rf2 Qxf6 29. Rxf6  If black refuses the white bishop as in the game line
25...f6 26.Qh8+ Kf7 27.fxg6+ Ke7 (Ke6? Rxf6+) 28.Bxf6+
and white has 3-4 pieces chasing the king. White should win from here. |
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| May-23-15 | | patzer2: For a Saturday puzzle, 22. Rxh7! seems to play itself out without much difficulty finding the correct continuation in this pursuit combination. I found yesterday's Friday puzzle, despite my previous familiarity with it, considerably more difficult. P.S.: However, I think it's good to occasionally make the weekend puzzles a bit easier for junior players and novices to understand. |
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May-23-15
 | | Sneaky: All I saw was 25...Kxg7? 26.f6+ etc. |
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| May-23-15 | | M.Hassan: 'Very Difficult"
White to play 22.?
Sides are exactly equal.
The cramped position of black King suggests a Rook sac on h7:A)
22.Rxh7 Kxh7
23.Qh4+ Kg8
<if...Kg7 24.Qh6+ Kg8 and theKing is forced to g8>
24.Bf6 Bg7
25.Bxg8 Kxg7
26.f6+ Kg8
27.Qh6 Qxd4+
28.Kh1 Qxf6 (if not, it is a mate on g7
29.Rxf6 e3
30.Rf1 e2
31.Re1
click for larger view
e pawn is no danger and will ultimately be captured.
If Rook sac is denied there will not be any better for Black: B)
22.Rxh7 Bg7
23.Rxg8+ Kxg8
24.Bf6+ Kxf6
25.fxg6+disc. Kxg6
26.Qf6+ Kh7
27.Rf4 Qxd4+
28Qxd4 f5
Time to review game
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Different variation after my move 25 in line A. I give myself some credit. |
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| May-23-15 | | houtenton: <patzer2>I fully agree with your description of today's problem. It gives also a good feeling for older and more experienced players to get a present like today. Time left for other things to do in this weekend. Scrolling back in the game, I think black already lost it by 10.f4! which looks to be the answer to the b6-Bb7 move of black, where the bisshop is doing nothing for the rest of the game. So it feels not good to play b6-Bb7 in the Nimzo-Indian defense. There seems to be no good defense against the half-open f-and h-lines. |
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| May-23-15 | | morfishine: Not much to add. The point seems to be that after <22.Rxh7> one must be able to differentiate between continuations at move 25 for Black: 22...Kxh7 23.Qh4+ Kg8 24.Bf6 Bg7 25.Bxg7 and now Black must play <25...f6> (25...Kxg7?? 26.f6+ Kg8 27.Qh6) I was pleased to have identified 25...f6
***** |
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May-23-15
 | | offramp: The first move is pretty obvious. Korchnoi says that you can give up rooks until the cows come home; it's minor pieces one has to be careful about sacrificing. In this game the clever part is that white did not play f5xg6 for many moves. I'm afraid I failed this test of patience and analysis. |
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| May-23-15 | | agb2002: White has a bishop and a knight for the bishop pair. The first idea that comes to mind is 22.Rxh7:
A) 22... Kxh7 23.Qh4+ Kg8 (23... Kg7 24.Bf6+ Kg8 25.Qh8#; 23... Bh6 24.Qxh6+ Kg8 25.Bf6 wins) 24.Bf6 Bg7 25.Bxg7 A.1) 25... Kxg7 26.f6+ Kg8 (26... Kf8 27.Qh8#) 27.Qh6 Qxd4+ 28.Rf2 Qxf6 29.Rxf6 e3 30.Rf1 + - [Q+N vs R+B+P]. A.2) 25... f6 26.Qh8+ (26.Bxf6 Qh7 27.Qg3 looks also very good) 26... Kf7 27.fxg6+ Ke6 (27... Kxg6 28.Rxf6+ Kg5 29.Qh6+ Kg4 30.Rf4#) 28.Rxf6+ Ke7 A.2.a) 29.Bf8+ Kd8 (29... Rxf8 30.Qg7+ wins) 30.Rd6 Qxd6 (30... Rxf8 31.Qxf8+ Kc7 32.Rxd7+ wins; 30... Kc7 31.Rxd7+ Kxd7 32.g7 wins) 31.Qh4+ Qe7 32.Bxe7+ Rxe7 33.g7 Ree8 looks too complex. A.2.b) 29.Rf7+ Kd8 (29... Ke6 30.Qh3+ wins) 30.Bf6+ Kc7 31.Rxd7+ Kxd7 32.Qh7+ Kc6 33.d5+ Kb6 34.Bd4+ Ka5 35.Qxb7 + - [Q+B+N+3P vs 2R]. B) 22... Bg7 23.Rxg7+ Kxg7 24.f6+ followed by 25.Qh4 wins. C) 22... b4 23.Qh4 Bg7 (23... bxc3 24.Rh8+ Kg7 25.Qh6(7)#)) 24.Rxg7+ Kf8 (24... Kxg7 25.f6+ as in B) 25.Qh4 Kxg7 26.Bf6+ Kf(g)8 27.Qh8#. |
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May-23-15
 | | Penguincw: I had 22.Rxh7 Kxh7 23.Qh4+ Kg8 24.Bf6 Bg7, and that's it. Another possibility I had was 22.Bf6 gxf5?? 23.Rxh7?? (23.Qg3+ Bg7 24.Qxg7# 1-0) Kxh7 24.Qh4+ Kg8?? 25.Qh8# 1-0. |
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| May-23-15 | | gars: I agree one-hundred per cent with <patzer2> and I am a weak player myself. |
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May-23-15
 | | Sally Simpson: Only glanced at this intending too come back later but Rxh7 suggests itself right away and the follow up as far as Bxg7 Bxg7 Kxg7 and f6+ winning is forced so that must be it. Black cannot take back on g7 so White gets his bit back with a stonking attack mating or winning a sack full of material. The trap must be experienced Saturday solvers will be looking something they have missed and do a triple take before taking on h7. |
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| May-23-15 | | patzer2: <houtenton> Thanks! It is nice to have a break to do other stuff after a not too difficult Saturday puzzle. As to where Black went wrong or White was winning, I'm a bit skeptical 10. f4 was a turning point in the game. Don't get me wrong, as 10. f4 is a fine move. It's by far the most frequently played try at master level (played in 30 out of 36 games according to our Opening Explorer), and as such is probably the best move in the position. However, after 10. f4 c5 = (as in P Wells vs J Cobb, 2012) or 10.f4 a6 = (as in this game), I'm not convinced White has anything better than equality. Indeed, in this game Fritz indicates Black can grab the advantage later on with 20...f6!  when play might continue 21.Qb3+ Rc4 22.Bh6 Rf7 23.fxg6 hxg6 24.Be3 f5 25.Ne2 Rg7 26.Rh6 Bd5 27.Qd1 Rc6 28.Qd2 Be7 29.b3 Rh7 30.Rxh7 Kxh7 31.Nf4 Kg7 32.Nxd5 Qxd5 33.Bh6+ Kg8 34.Bf4 Bf6 35.Rd1 Kg7 (-0.84 @ 23 depth, Deep Fritz 14). Though missing 20...f6! definitely hurts Black's chances, his decisive blunder actually comes one move later with 21...Bf8?? (allowing 22. Rxh7! ). Instead of 21...Bf8??, Black can make a fight of it with 21...e3! when play might continue 21... e3! 22. Qh4 h5 23. Rxe3 Rxe3 24. Bxe3 Be7 25. Qf2 b4 26. fxg6 f6 27. Nd1 Be4! 28. Re1 Bxg6 29. Qf3 a5 = (0.19 @ 23 depth, Deep Fritz 14). |
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May-23-15
 | | Jimfromprovidence: The puzzle gets more interesting in those scenarios where black does not take the rook, such as 22...gxf5.
click for larger viewIt appears that white has to retreat the rook because 23 Qh4 allows 23...Qxd4+ and black has support for h8. Instead white wins with the counterintuitive 23 Rh8+!
click for larger viewBlack must take (if 23...Kg7 24 Qh4, etc.) so after 23...Kxh8 24 Qh4+ Kg8 25 Bf6 Bg7 26 Qg3, white wins. 
click for larger view |
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| May-23-15 | | kevin86: The black king is chased from safety and hounded by the white pieces. It does not end well (for black) |
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| May-23-15 | | OutOfSync: Good morning chrisowen!!
I hefalump swizzle dizzle fizzle hope slingbling slide a turnip you boopaloop snoop doop have dingaling sing bring a dashy flashy marshy mashy good light prince since quincy day! |
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| May-23-15 | | houtenton: <patzer2> Thank yóu for your explanation. I try to find any time on this saterday-night to work out your analyses. In the moment I have to reinstall still my Fritz and wrote my opinion about the fianchetto Bb7 based on visually looking at the game (and my memory). I have to realise that in this high-quality of chesschat it's better to think twice before writing something down. I'm anyway honored to have your response. |
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| May-23-15 | | devere: 22. Rxh7 Bg7 23. Rxg7+ Kxg7 24. Bf6+
click for larger view
Kxf6 4. fxg6+ Kg7 5. Qf6+ Kf8 6. gxf7 Red8 7. Qh6+ Ke7 8. f8=Q+ Rxf8 9. Qg7+ Kd8 10. Rxf8+ Kc7 11. Rf7 + - |
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| May-23-15 | | morfishine: <patzer2> Nice posting on the follow-up. I really should spend more time going over the entire game of a POTD to find improvements prior to the actual puzzle position I used to
***** |
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| May-23-15 | | Conrad93: The rest of the moves are either forced or are intuitive. Once I saw the potential rook sacrifice on h7, followed by bishop check I knew it was game over. I did not consider 25...f6, but 26. Qh8+ is a bit too obvious to avoid. The rest I don't think is worthy of analysis. |
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| May-23-15 | | tappingfoot: <chrisowen:>
Douche Nf5 bingo the jerk hanging Qc2 Pabarasbas este caballo Bg5 andale andale arriba la labatiba Ke2. |
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| May-23-15 | | MagnusVerMagnus: this was way too easy...seems like the 2 stars are harder than most now |
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| May-23-15 | | Rookiepawn: As <chrisowen> pointed out <man pop over ash h8>... Damn of course! It was right there and I didn't see it. And of course then <d5 win as grass right routes co batch>, that's the easy part. And the angles too. Slowly, but I'm improving. |
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| May-31-15 | | Conrad93: <Douche Nf5 bingo the jerk hanging Qc2 Pabarasbas este caballo Bg5 andale andale arriba la labatiba Ke2.> I'm confused. Is this some kind of secret language? |
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| May-31-15 | | I Like Fish: fool me once.... |
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Kibitzing
sac: 22.Rxh7