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Mar-18-19
 | | Penguincw: Yay, nice simple puzzle. Just grab the knight. Easy. Win a piece. Queen is overloaded. |
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Mar-18-19
 | | al wazir: For a change, a puzzle labeled "very easy" actually was very easy. |
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Mar-18-19 | | Olsonist: Are there even any other moves? |
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Mar-18-19 | | ChessHigherCat: Or Rsac Monday! |
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Mar-18-19 | | devere: <Olsonist: Are there even any other moves?> 32.Rxf5 is mate in 5.
32.Rf1 threatening Qb8+ is mate in 7.
32.Kh2!? threatening 33.Rxf5 is mate in 7. The poor Black knight can't capture anything! 32.Qg5 is mate in 9. |
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Mar-18-19 | | saturn2: I saw 32 Rxf5 threating Rf8 and Qb8. Black has only some checks before getting mated. |
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Mar-18-19 | | lost in space: I love Mondays!
32. Rxf5 and that’s it |
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Mar-18-19 | | Stale.Mate: Wasn’t...31Kh8 a mistake? Wouldn’t Kf7 offer a fighting chance? |
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Mar-18-19 | | agb2002: White has a bishop for a knight and a pawn.
Black threatens Nxg3 and Nxh6, although both the queen and bishop are momentarily tabu. The black queen is overwhelmed with the defense of the knight, the back rank and g7. Therefore, 32.Rxf5 and mate soon (32... Qxf5 33.Qg7#). |
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Mar-18-19 | | Infohunter: <Stale.Mate: Wasn’t...31Kh8 a mistake? Wouldn’t Kf7 offer a fighting chance?> If 31...Kf7, White still wins a piece:
a)32.Qg7+ Ke6 33.Qe5+ Kf7 34.Rxf5 or 34.Qxf5
b) 32.Qg7+ Ke8 33.Qxd7+ Kxd7 34.Rxf5 |
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Mar-18-19 | | amadeus: Effortless. |
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Mar-18-19 | | Cheapo by the Dozen: I quickly checked that Rxf5 won a piece, in that te rook is poisoned, and Black doesn't have much in the way of counterplay. Only then did I see that it actually forces mate. |
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Mar-18-19 | | stacase: Hmmm, if Queenie could only get to b8 but the Rook is in the way. What to do what to do? |
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Mar-18-19 | | Mayankk: Probably 31 White to play would be more fun to solve. Queen is en prise but the discovered check from her using Bh6+ still works owing to Rf8#. Slightly trickier to find instead of the ‘very very easy’ Rxf5. |
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Mar-18-19 | | jith1207: < Infohunter: <Stale.Mate: Wasn’t...31Kh8 a mistake? Wouldn’t Kf7 offer a fighting chance?>
If 31...Kf7,....>
In the second scenario
b) 32.Qg7+ Ke8 33.Qf8 is checkmate. |
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Mar-18-19 | | malt: 32.R:f5 Rook sac Monday. |
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Mar-18-19 | | Dr. Funkenstein: strange that stockfish overlooks 26. ...Rxe8+ as the eval appears to go from -0.45 to 3.4 something in just that one move.... is there something else we are missing? |
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Mar-18-19 | | zb2cr: The Black Queen is overworked, 32. Rxf5 wins a piece. As a bonus, White's Rook capture creates a subsidiary threat of Rf8#. A quick mate seems likely. |
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Mar-18-19
 | | Sally Simpson: ***
Hi Mayankk,
'Probably 31 White to play would be more fun to solve.'  click for larger viewWe will make that the Tuesday puzzle.
*** |
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Mar-18-19 | | Diana Fernanda: Believe who Is very Easy, rook x knight y the amazing in g7 not to be can stop |
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Mar-18-19 | | Sleeping kitten: I thought it was Black to play. I found the nice variation 31...♖a1+ 32. ♔f2 ♖f1+ 33. ♔xf1 ♘xg3+ 34. ♔f2 ♘f5. Isn't it better than the actual puzzle? |
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Mar-18-19
 | | wood n tempo: How nice to get the puzzle so quickly. The black queen is guarding the mating square at g7, so can't possibly be protecting the knight as well; therefor, rook takes knight (32.♖xf5) wins a piece. |
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Mar-18-19 | | whiteshark: Nowadays I usually let the computer calculate for 6 minutes, wondering why I didn't do it back then? Maybe the analysis tool was still quite new then... click for larger view
Black to move
1) +1.38 (33 ply) 26...Rf7 27.Bh4 Re7 28.Rxe7 Ra1+ 29.Kh2 Qxe7 30.Rxc6 bxc6 31.Bxe7 Nxe7 32.Qh4 Ng6 33.Qg4 Ne7 34.Qh5 Kf8 35.Qxh7 a5 36.Qh8+ Kf7 37.Qh5+ g6 38.Qf3+ Ke8 39.Qe2 Ra4 40.h4 Rc4 41.g4 c5 42.dxc5 Rxc5 43.h5 gxh5 44.gxh5 Rxc3 2) +1.59 (32 ply) 26...a5 27.Rxf8+ Kxf8 28.Bh4 Kf7 29.Qf3+ Kg8 30.Qh5 g6 31.Qe5 Nd6 32.Rf1 Nf5 33.g4 Qd6 34.gxf5 Qxe5 35.dxe5 Ra4 36.Bd8 Re4 37.e6 gxf5 38.e7 Kf7 39.Rxf5+ Ke8 40.Rf8+ Kd7 41.Bxa5 Rxe7 42.Bb4 Re3 43.Rf7+ Ke8 44.Rxh7 b6 45.Kf2 Rd3 46.Re7+ Kd8 47.Re3 Rxe3 48.Kxe3 c5 49.Ba3 Kc7 50.Kf4 d4 51.cxd4 3) +1.62 (32 ply) 26...Rb2 27.Rxf8+ Kxf8 28.Qe5 Kg8 29.Qe8+ Qxe8 30.Rxe8+ Kf7 31.Rxc8 h5 32.Bd8 Rb3 33.Kf2 Kg6 34.Ba5 Ra3 35.Bb4 Ra2+ 36.Kg3 a5 37.Bf8 Rc2 38.Rc7 b5 39.Rxg7+ Kf5 40.Rf7+ Ke4 41.Rf3 Re2 42.Kh4 Re3 43.Rxe3+ Kxe3 44.Bc5 Kd3 45.Kxh5 Kxc3 46.g4 b4 47.g5 a4 48.g6 a3 49.g7 6.0 minute analysis by Stockfish 9 v010218 |
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Mar-18-19 | | patzer2: From <Whiteshark>'s Dec 5, 2017 post, Stockfish apparently miscalculated in analyzing 26...Re8 as favorable for Black. It also miscalculated this morning when I ran the chessgames.com Stockfish analysis and came up with a clearly wrong evaluation of 26...Re8 ⩱ (-0.45 @ 27 ply). After 26...Re8 27. Rxe8+ Qxe8 28. Bh6!! Black is busted. For an improvement for Black, instead of 24...Rxd2?, I like 24...Qc7 as 25. Nf3?? is met by 25...R2xf3! 26. gxf3 Bxe1 27. Rxe1 Qg3+ (Queen fork) 28. Kf1 Qxg5 -+. P.S.: <Whiteshark> our posts are now transposed. I reposted to make a correction. Good to see Stockfish corrects the evaluation as you go from 27 ply to 32 ply. |
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Mar-18-19 | | Damenlaeuferbauer: My solution is 32. Rxf5!,Qxf5 33.Qg7#. I respect Valentina Gunina for playing the Caro-Kann defense superbly with the black pieces. She won the Russian Superfinals in 2013 and played a very sophisticated game there with black against Anastasia Bodnaruk (Caro-Kann defense, Advance system, Short Variation [B 12]). |
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