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| Apr-13-12 | | abuzic: <sevenseaman: abuzic
Fine mate!
In your line 48...Ke5 49. Rxg5+ fxg5 50. Qxh3 reduces to an end game of Q vs R with 2 Ps plus to White. You didn't prefer that?>
Thanks, and you're right about 49.Rxg5+ in the first line. This seems the main idea, in my opinion, from the 44.Rxh7+ sac 2R for P+N+Q.
I wanted to show a forced mate with the black Q still on the board, in both variations. Besides, the R for Q sac was availabe after 47.Rxg5+ fxg5 <47...Kxg5 48.Qg7+> 48.Qd7+ K moves 49.Qxh3. |
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| Apr-13-12 | | CHESSTTCAMPS: In this two-sided attacking position, black is down pawn plus exchange, but threatens 44... Qg2#. With black's exposed king and pinned Ng5, White has his own attacking possibilities and need not consider the defensive 44.Rc2(??). 44.Rxh7+! Kxh7 45.Qe7+ forces a quick win:
A) 45... Nf7 46.Qxf7+ Kh6 47.Qxf6+ forces mate.
B) 45... Kh6? 46.Qxf6+ is similar.
C) 45... Kg6 46.Rg8+ Kf5 (Kh6 47.Qxf6+) 47.Qd7+ (Rxg5+ also does the trick) Ke5 (Ne6 48.Qd5#) 48.Rxg5+ fxg5 49.Qxh3 wins. |
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| Apr-13-12 | | whiteshark: I put Red Bull instead of hot water into my coffe pot this morning and found the full solution on the spot... How now? |
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| Apr-13-12 | | Jim Bartle: What if white had played 44. fxg5 ? |
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| Apr-13-12 | | JohnBoy: I had fun with this puzzle. I followed exactly the game line rather quickly and wanted to play 47.Qd7+, but it looked like black could survive with 47...Ne6 (I now am sure that white wins here with 48.Qd5+), so wondered if I could afford to get rid of the knight. The rest is the Duras line. |
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Apr-13-12
 | | chrisowen: Ding dong billa bong having rook danger in many lines i forsee heckle, 44.rxh7+ for kxh7 creak line method harness idea 45.qe7+ kingg6 a dab hand in forges cuff 46.rg8+ kf5 in tempt it woofer out exactly I da gen mind 47.rxg5+! etalon good optical clinch light rook is skewered queen son ja kingxg5 lo dr 48.qg7+! in lieu loose h3q tonka in cab i churned pad also 48...kf5 gate swing dig in clunk clip 49.qd7 rara chin same it nonlander trench secret weapon ye in olde spear h3 I neptunise her doubles in centurion xray whilst ra2 see fine gossamer right spun ragga done. Depth in gravel children comings to play air on a h7g8 ogled a naggle 43...nxg5 DID feels the pinch poof penetration elephant rack man I know it toil in trade classic misdemeanor i guess cabal in careful dine on h7 rooks en mass lovely in-ceedence 47.g4 ja bine i do tn in heading off mountain pass being affable 12...qe7 ask im the waves decadent as well. |
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| Apr-13-12 | | polarx: Not so difficult because since being a puzzle you know there is a way out and because every move by white must be forcing. The one with the knight out in the beginning in d5 and g5 being the winning move, that one I did not get it. |
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| Apr-13-12 | | James D Flynn: Black threatens Qxg3+ if then Kf1 or Kh1 Qh3+ followed by Nxf3+ which wins the Q immediately with mate on the next move if the White K is on g1 or on the following move if the White K is on e1 and move to d1 when Q f1+ wins the Q with mate. Black must check immediately.
44.Rxh7+ Kxh7 45.Qe7+ Kg6 46.Qe8+ if Kf5 47.Rc5# if Kg7 or h7 48.Rc7+ forces Kh6 then 49.Qh8+ Kg6 50.Rg8+ Kf5 51.Rxg5+ wins the Q on h3 leaving White up a Q for a R with a clear win. If instead 47… Kh6 then 48.Qh8+ leads to the same wins of the Q a move earlier. |
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| Apr-13-12 | | solskytz: 1... Rxh7+ 2. Kxh7 Qe7+ 3. Kg6 Rg8+ 4. Kf5 Qd7+ 5. Ne6 Qd5 mate a different 5th move loses the Q across the diagonal
So does a different 2nd, 3rd or 4th move - this time across the file. If it took me between 30 seconds and a minute, it probably isn't a REAL Friday as I generally don't get these... (I never dedicate more than a couple of minutes to these puzzles... blimey! Lack of patience is my major affliction - and they say that you can't become a strong chess player if you lack this quality...) |
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| Apr-13-12 | | solskytz: Huh... a mistake in my quick calculations!
4...Qd7 5. Ke5 and the Q is defended. If instead 5...Re8+ then now 6. Ne6 seems to hold - although I didn't calculate further. |
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| Apr-13-12 | | solskytz: There's also the variation 1. Rxh7+ Kxh7 2. Qe7+ Kg6 3. Rg8+ Kf5 4. Qd7+ Ke5 5. f4 with a king hunt, which is probably also a winner... a mistake in calculation is always a mistake in calculation - but sometimes you win anyway... even if you reverse the annotations for black and white moves in your calculations! |
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| Apr-13-12 | | Morten: Crystal clear and beautiful. But I did not get it. Probably because I did not spend enough time. Yes, that must be it... |
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| Apr-13-12 | | solskytz: All credit to Duras who had to work it out several moves before the start of our POTD - but he could probably afford some little calculating errors and still emerge the winner - if less elegantly... |
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| Apr-13-12 | | sevenseaman: If I were a computer I'd think differently.
click for larger viewWhite. |
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| Apr-13-12 | | Jim Bartle: My guess is that Cohn didn't play 44. fxg5 because he saw that 44...Qxe6 45 Qxe6 46 Rc6 would lead to a draw, and he still thought he had a win. |
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| Apr-13-12 | | newzild: I got this one without too many problems.
The game is a good demonstration of the power of the initiative. Black threatens a mate-in-one for 10 moves, but never gets the chance to play it. |
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| Apr-13-12 | | newzild: <James D Flynn: Black threatens Qxg3+ if then Kf1 or Kh1 Qh3+ followed by Nxf3+ which wins the Q immediately with mate on the next move if the White K is on g1 or on the following move if the White K is on e1 and move to d1 when Q f1+ wins the Q with mate.> More pressingly, Black threatens the immediate 44...Qg2 mate! <Jim Bartle: What if white had played 44. fxg5 ?> 44...Qd7+ wins the Qh3. |
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Apr-13-12
 | | FSR: Not hard if you can visualize it: <44.Rxh7+! Kxh7 ▢> (44...Kg6? 45.Rxh3 Nxh3+ 46.Kf1) <45.Qe7+ Kg6 ▢> (45...Nf7? 46.Qxf7+ Kh6 47.Rh8#; 45...Kh6? 46.Qxf6+ Kh5 47.Rh8+ Nh7 48.Rxh7#) <46.Rg8+ Kf5> [46...Kh5? 47.Rh8+ Kg6 48.Qe8+ (most accurate) and White will mate or win the queen for free] and now either <47.Qd7+ Ke5> (47...Ne6 48.Qd5#) <48.Rxg5+ hxg5 48.Qxh3> or, more elegantly, <47.Rxg5+! Kxg5> (47...fxg5 48.Qd7+ Kg6 49.Qxh3) <48.Qg7+> and Black can choose whether to hang his queen to a diagonal or vertical skewer (48...Kh5 49.Qh7+; 48...Kf5 49.Qd7+) |
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Apr-13-12
| | FSR: <sevenseaman> 1.Rxb6 looks good enough. |
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| Apr-13-12 | | Jim Bartle: "<Jim Bartle: What if white had played 44. fxg5 ?> 44...Qd7+ wins the Qh3."
But 44...Qd7 wouldn't be legal and it wouldn't be check. |
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| Apr-13-12 | | sevenseaman: <FSR> You think like a computer. Like me you too are misusing the 'box'. It is attached when no other legal move is available, not when it is the only sensible move. Another puzzle, a tad more challenging.
click for larger viewWhite. |
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Apr-13-12
| | FSR: <sevenseaman> Box means "only move," which I interpret more broadly than "only legal move." There wouldn't be much point to the symbol if that were all it meant. As for your problem, 1.Qd8+ Kg7 2.Rxg6+ Kh7 3.Qg8# looks easy enough. Black's moves are both "box" moves in the narrow (and thus, IMO, superfluous) sense of the symbol. |
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Apr-13-12
| | FSR: <Jim Bartle: What if white had played 44. fxg5 ?> Black would have pointed out that White's move was illegal, and (White having touched his f-pawn) demanded that White play 44.f4?? |
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| Apr-13-12 | | Jim Bartle: I knew I got that one wrong, FSR. I meant what if BLACK had played 44...fxg5? I think 45. Qxe6+ would have led to a draw by repetition. |
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| Apr-13-12 | | ughaibu: There's a note on the first page of kibitzing, about 44...fg5 |
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sac: 44.Rxh7+