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Later Kibitzing> |
Dec-05-17 | | Nerwal: 22. ♖e6? is quite the coffeehouse decision (Black can get a good, safe game with the simple 24... ♗f4! neutralizing an important attacking piece, or even 25.... ♖d1!? next move), but after the greedy 24... ♖xd2?! 25. ♕xg3 ♖xa2?! Black is already in trouble despite being up two pawns (indeed the ♖a2 and the ♘c8 are simply out of play, and using the Kasparov rule trading one of the white rooks for the ♖f8 will not help Black to defend). But the continuation of the game is just amazing : 26. ♖f6! (Kasparov's rule) 27. ♖xe8+!, 28. ♗h6!, 29. ♖f4! and White is just winning. Even Stockfish 8 gets tricked for quite a while. |
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Dec-05-17 | | alphamaster: Amazing! Stockfish didn't see the final combination and suggested 26. ... Re8 giving Black as better. |
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Dec-05-17 | | whiteshark: REQUEST ANALYSIS
 click for larger viewBlack to move
1) -0.45 (27 ply) 26...Re8 27.Ref1 Rae2 28.Rf7 Qxf7 29.Rxf7 Kxf7 30.Qc7+ Kg8 31.Qxb7 h6 32.Bf4 R2e6 33.h4 Nb6 34.Qxa7 Nc4 35.Qb7 R8e7 36.Qb8+ Kh7 37.Qb1+ Re4 38.Kh2 Kg8 39.Qb8+ Re8 40.Qc7 R8e6 41.g4 Ne3 42.g5 h5 43.Kg3 Rg6 44.Qd7 Rge6 45.Kh3 Nd1 2) +0.53 (27 ply) 26...a5 27.Rxf8+ Kxf8 28.Qe5 Kg8 29.Qe8+ Qxe8 30.Rxe8+ Kf7 31.Rxc8 a4 32.Ra8 Ke6 33.Ra7 h6 34.Bf4 g5 35.Be5 b5 36.Ra6 Kd7 37.Bg7 Rc2 38.Bxh6 Rxc3 39.Kf1 Rd3 40.Bxg5 Rxd4 41.Ke2 Re4+ 42.Kd2 Kc7 43.g4 Kb7 44.Ra5 Kb6 45.Ra8 Kc5 3) +0.86 (26 ply) 26...a5 27.Rxf8+ Kxf8 28.Qe5 Kg8 29.Qe8+ Qxe8 30.Rxe8+ Kf7 31.Rxc8 a4 32.Ra8 Ke6 33.Ra7 h6 34.Bh4 a3 35.g4 g6 36.Bg3 h5 37.Kf1 Ra1+ 38.Ke2 a2 39.Be1 Kd6 40.gxh5 gxh5 41.Bd2 Ke6 42.h4 Kf5 43.Kd3 Kg4 44.Kc2 Kxh4 45.Kb3 Kg4 46.Rxa2 Rxa2 47.Kxa2 b5 1.0 minute analysis by Stockfish 8 v270317 |
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Dec-05-17 | | whiteshark: REQUEST ANALYSIS
 click for larger viewBlack to move
1) +3.61 (30 ply) 28...Qd7 29.Rf4 Nd6 30.Bxg7 Qxg7 31.Rg4 Qxg4 32.Qxg4+ Kf8 33.Qd7 Ne4 34.Qxb7 Rc2 35.Qxc6 Rxc3 36.Qxd5 Nf6 37.Qa8+ Kf7 38.Qxa7+ Kg6 39.Qa6 h5 40.Qe6 Rd3 41.Qc4 Re3 42.Qc2+ Re4 43.Kf2 Kg7 44.Qc5 Kg6 45.Kf3 h4 46.Qc4 Kg5 47.Qb5+ Kg6 48.Qc5 Re1 49.Qc2+ Kf7 50.Qd3 2) +3.93 (29 ply) 28...Ra1+ 29.Kh2 Qd7 30.Rf4 Nd6 31.Bxg7 Qxg7 32.Rg4 Qxg4 33.Qxg4+ Kf8 34.Qd7 Ne8 35.Qxb7 Nf6 36.Qxc6 Kg7 37.c4 dxc4 38.Qxc4 Re1 39.Qc7+ Kf8 40.Qxa7 Re7 41.Qb8+ Re8 42.Qb3 Re7 43.Qd3 Kf7 44.g4 h6 45.Kg3 Re8 46.Kf3 Rd8 47.h4 Rd5 48.Kg3 Rd8 49.Kf4 Ke6 50.Qc4+ Ke7 3) +8.24 (29 ply) 28...Qe7 29.Re6 Ra1+ 30.Kh2 Kf7 31.Rxe7+ Nxe7 32.Qxg7+ Ke8 33.Qe5 Rf1 34.Qb8+ Kd7 35.Qxb7+ Ke6 36.Qxa7 Rf5 37.Qc7 c5 38.g4 Rf2+ 39.Kg1 Re2 40.Bg5 Kf7 41.Qxc5 Re4 42.Kf2 Kf8 43.Bxe7+ Rxe7 44.Qxd5 Rf7+ 45.Kg2 Kg7 46.Qe5+ Kg8 47.c4 Rg7 48.c5 Kf7 49.Qf5+ Kg8 1.0 minute analysis by Stockfish 8 v270317 |
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Mar-18-19
 | | Phony Benoni: Well, we can just win two pieces with 32.Rxf5. The knight, of course, and then it's hard to see how Black can save his king as well. |
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Mar-18-19 | | landshark: Wow I finally solved a Monday puzzle (: |
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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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