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| Jul-28-10 | | Marmot PFL: 29 Ba3+ Bd6 30 Bxd6+ Qxd6 31 Nf5 Qmoves 32 Qh8+ Nxh8 33 Rxh8 mate. This was tricky as there are several other tries that fail. |
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| Jul-28-10 | | patzer2: As <YouRang> observes, Black's 25...e5? allowed White a brilliant attacking combination against the helpless King position after 26. Qh2!!
Ng6 27. Nxe5! (also winning was 27. Qh7+! Kf8 28. Nxe5  ).Instead of 25...e5?, perhaps 25...Ng6 26. Qg4! Kf8 27. Nh4 Nxh4 28. Rxh4 Ke7 29. g6 f6 30. Rh7 Rg8  would have given Black practical drawing chances in an inferior position. Today's Wednesday puzzle solution, 29. Ba3+!, was of course set up by the combination beginning with 26. Qh2!! Following the forcing 29...Bd6 30. Bxd6+ Qxd6 31. Nf5 White springs a winning double attack, threateing both the Queen and mate-in-two (e.g. 31...Qd7 32. Qh8+ Nxh8 33. Rxh8#). |
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Jul-28-10
 | | doubledrooks: I found the game continuation to the end.
Also, 27. Nxe5 was a great find by Bischoff. |
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| Jul-28-10 | | cjgone: Took me a while to find. I played exf4 instead. Rybka says this is about the same as moving the king. |
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| Jul-28-10 | | Ferro: En la Piramidal Augusta, Remember when i an older sugunt. La olivera twist older in de site august convent. La Alfil-Bishop success la older a3, Luego el Alfil August innove the persecution paracaidist, and Explote! in Emotion mis venas of love (de mujer). |
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| Jul-28-10 | | Ferro: 27. Nxe5. Otra vez el tema Apasionado del Sacrificio. Hasta cuando os dareis cuenta? Mis ojos revientan a explotar junto a ti, lector! |
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| Jul-28-10 | | Ferro: Mis ojos... |
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| Jul-28-10 | | SufferingBruin: Y'all might find this overly fawning but I have to say it, publicly: if I could analyze chess like <patzer2>, I might never leave the damn house. |
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| Jul-28-10 | | wals: Black's ruin was 25...e5 +4.97.
Alternatives:-
Analysis by Rybka 3 1-cpu:
1. (1.32): 25...a5 26.Qg4[] Ng6 27.Nh4 b4 28.Qh3 Kf8 29.Nxg6+ fxg6 30.Qh7 Qf7 31.Rh3 Ba6+ 32.d3 Ke7 33.Rf3 Qg8 34.Qxg6 Bb5 35.Nxb5 Rc2+ 36.Kd1 Rxb2 2. (1.32): 25...b4 26.Qg4[] Ng6 27.Nh4 a5 28.Qh3 Kf8 29.Nxg6+ fxg6 30.Qh7 Qf7 31.Rh3 Ba6+ 32.d3 Ke7 33.Rf3 Qg8 34.Qxg6 Bb5 35.Nxb5 Rc2+ 36.Kd1 Rxb2 3. (1.33): 25...Ng6 26.Qg4[] Kf8 27.Nh4 Nxh4 28.Rxh4 Ke7 29.Rh7 Rg8 30.Nf3 g6 31.Ne5 Bxe5 32.Bxe5 Ke8 33.Qb4 Bc8 34.Qc5 Bb7 4. (1.53): 25...Bc6 26.Nxc6 Qxc6[] 27.Bxg7 Ng6 28.Nd4 Qd7 29.Bf6 Kf8 30.Qg4 Ke8 and lost all chance with
26...Ng6 +10.30.
White gave some slack with
27.Nxe5 +5.27 (Qh7+ was the go)
Black however, determined to lose,
retaliated with, 27...Bxe5 +16.35. |
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| Jul-28-10 | | rapidcitychess: That was a puzzle I almost missed, because of the Ba3 hitting f8. :) |
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| Jul-28-10 | | BOSTER: <patzer2> <As <YouRang> observes Black 25...e5 allowed White a brilliant attacking combination>.
Studing this game I want to notice,that in spite of many black's mistakes if they played 18... Re8 (instead Rc8- losing a tempo and helping white) this "crazy" attack beginning from move 9.g4 was not such successful. |
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| Jul-28-10 | | donehung: To me not a 2 star puzzle, too many themes :deflection in conjunction with the double attack on top of parrying any of blacks checks... |
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| Jul-28-10 | | turbo231: this puzzle puzzles me |
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| Jul-28-10 | | Moonwalker: <<BOSTER>: How can you explain that such well-known and huge site like <CG> ( more than 500,000 games) has only about 50 students participating in this learning process> Some of us sit quitely in the back row, extremely attentive on Monday, concentration wavering by Wednesday and, from Friday, revert to playing tic-tac-toe! I must be getting better though, got today's except for considerations for the spite check 31. ... ♘f4+. Or rather stopped looking after concluding that there is no feasible defence against 31. ♘f5 Now if you'll excuse me, it's getting late in the week and I have lots of paper-planes to construct! |
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| Jul-29-10 | | M.Hassan: I went to great lengths to solve it starting with 29.f4 but it just did not work out.Meaning could not solve it!! |
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| Jul-29-10 | | njchess: Nice puzzle, though not too hard to see Ba3+.
I think Black's game begins to go awry as early as 5. ... e6. I've played the a6 Slav many times and one of the issues with an early e6 is that it commits Black's e-pawn to a square. e6 pretty much dooms Black to a closed position facing a kingside attack. Nbd7 is more flexible since it gives Black the option of a later e5, or e6. This is particularly important since White has already played h3. As a result, Black's bishop will wind up on b7 after the b5 pawn thrust. Nbd7 can even lead to c5 as an attempt to open up the center. |
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| Oct-10-24 | | BxChess: For today's puzzle 27 ? I saw the themes of the game line, but I went in a different order: 27. Qxa7+ Kf8 28. Nxe5. This still works |
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| Oct-10-24 | | mel gibson: I didn't get this one.
Stockfish 17 chooses a different ply to the text: 27. Qh7+
(27. Qh7+ (1.Qh7+ Kf8 2.Nxe5 Nxe5 3.Nf5 Qxf5 4.Qxf5 d4 5.Rh8+
Ke7 6.Rxc8 Bf3+ 7.Kf1 Bg4 8.Qe4 Bf3 9.Qh7 Bb7 10.Qg8 Bxc8 11.Qxc8 dxe3
12.dxe3 a5 13.Qb7+ Ke6 14.f4 a4 ) +9.44/46 611)
score for White +9.44 depth 46.
if I force SF to play the text ply it swaps Queens and the score is not as strong: 27. Nxe5 Qg4+
(27. .. Qg4+ (1. ... Qg4+ 2.Nxg4 Bxh2 3.Rxh2 Re8 4.Kf3 Bc8 5.Kg3 Ne7 6.Ne5 Nf5+ 7.Nxf5 Bxf5 8.Nc6 Bd7 9.Nd4
a5 10.Rh1 Rc8 11.a3 Ra8 12.Bc3 Ra6 13.f4 f6 14.gxf6 Rxf6 )
-6.47/42 329)
score for Black -6.47 depth 42. |
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Oct-10-24
 | | perfidious: That had to be disappointing after seeing mate in 28 in yesterday's POTD in ten seconds. |
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| Oct-10-24 | | mel gibson: <seeing mate in 28 in yesterday's POTD in ten seconds.> No - I saw the first ply and a few replies after that - not a mate in 28 sequence. |
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Oct-10-24
 | | chrisowen: Uv jap quark its safe its hi its won Nxe5 ace its me its coffin abe its leeway its dub its chi bod tad ada na its huh its Nxe5 duh its x |
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| Oct-10-24 | | TheaN: Pretty straightforward Thursday: the sequence kind of plays itself and can even be interchanged here and there: <27.Nxe5!> Qh7+ first works too, but I found Nxe5 a bit cleaner as the checks are kept for later. Black's in a bit of a bind here, 27....Nxe5 28.Qh8# and otherwise it's a fork on the queen and the knight. The queen doesn't have a lot of squares and 27....Qe7? runs into 28.Qh7+ Kf8 29.Qh8+! Nxh8 30.Rxh8#. On any other queen move White has at least Qh7+ and Nxg6, but much stronger is Nf5!, sticking to the puzzle's theme. So that just leaves accepting: <27....Bxe5>, now follows a forced sequence based on the bishop leaving a3-f8: <28.Qh7+ Kf8 29.Ba3+ Bd6> the alternatives are either bishop takes (b4/Rc5/Qd6) or Qh8 with mate (Ke8/Ne7/Qe7). <30.Bxd6+ Qxd6> otherwise Qh8+ #1 (or just #) <31.Nf5>:
click for larger view
At the end of the line, Black is forced to give up the queen to prevent mate. With Nf5 White covers e7 and thus threatens Qh8#. Black can try <31....Nf4+>, but both Kd1 and <32.Kf3> win easily as after <32....d4+ 33.Kg4 +-> Black's out of checks and will lose lots of material to prevent mate. |
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Oct-10-24
| | chrisowen: No retention xx |
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| Oct-10-24 | | alshatranji: "TheaN: Black can try <31....Nf4+>, but both Kd1 and <32.Kf3> win easily as after <32....d4+ 33.Kg4 +-> Black's out of checks and will lose lots of material to prevent mate." 32.exf4 works too. |
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| Oct-10-24 | | Rosbach: I didn't get this one. This was what I played 27. Qh7+ Kf8 28. Nh4 exd4 29. Nxg6+ fxg6 30. Bxd4 |
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Kibitzing
sac: 27.Nxe5