| Mar-02-18 | | pauldo: Got the gist of it but didn't anticipate white's delaying pin. |
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| Mar-02-18 | | ChessHigherCat: 19....Nf3 looks forcing 20. Bxf3 Bxf3 21. gxf3 Rg6+ 22. Kh1 Qh3 and datz dat. Maybe it's a Friday puzzle because white can give back the piece with 21. Qxg7+ Qxg7 22. Bxg7 with both sides threatening BxR. |
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| Mar-02-18 | | ChessHigherCat: <pauldo> ditto! We'missed the prettiest part, Qh3 |
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Mar-02-18
 | | al wazir: 19...Nf3+ 20. Bxf3 Bxf3 21. Qxg7+ Qxg7 22. Bxg7 Rg6! 0:1. |
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| Mar-02-18 | | 5hrsolver: < al wazir: 19...Nf3+ 20. Bxf3 Bxf3 21. Qxg7+ Qxg7 22. Bxg7 Rg6! 0:1.> In your line on 21Bxg7 Qh3!! 0:1 also |
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| Mar-02-18 | | agb2002: Black has a bishop and a knight for the bishop pair. White threatens Qxb7. The white queen and the bishop on b2 aim at g7. The typical move is 19... Nf3+:
A) 20.gxf3 Rg6+ 21.Kh1 Qh3
A.1) 22.Rg1 Bxf3+ 23.Bxe2 Qxf3+ 24.Rg2 Qxg2#.
A.2) 22.Qxg7+ Rxg7 23.Bxg7 Bxf3+ 24.Bxf3 Qxf3+ 25.Kg1 Kxg7 - + [q vs R]. B) 20.Bxf3 Bxf3
B.1) 21.gxf3 Rg6+ 22.Kh1 Qh3 23.Qxg7+ (23.Rg1 Qxf3+ 24.Rg2 Qxg2#) 23... Rxg7 as in A.2. B.2) 21.Qxg7+ Qxg7 22.Bxg7 Rg6
B.2.a) 23.Bxf8 Rxg2+ 24.Kh1 Rg3(4..7)#.
B.2.b) 23.g3 Kxg7 - + [b vs P].
B.3) 21.Rd2 Rg6 22.g3 Qxh2+ 23.Kxh2 Rh6+ 24.Kg1 Rh1#. B.4) 21.Rfe1 Rg6 22.Kf1 (22.g3 Qxh2+ and mate in two) 22... Rxg2 wins (23.Rxd6 Rg1+ 24.Kxg1 Qg5+ 25.Kf1 Qg2#). |
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| Mar-02-18 | | AlicesKnight: Again, saw the right moves not necessarily in the right order ..... |
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| Mar-02-18 | | Cheapo by the Dozen: Ack. I overlooked that, in main lines after ... Qh3, the f3 pawn would then be hanging for a dangerous check. |
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| Mar-02-18 | | gofer: I was not sure quite what to try first; Bxg2, Bf3 or Nf3+. They all looked pretty good. The other
problem I had was opening up the a1-h8 diagonal meant that I had to be sure that Qxg7+ was not
available at any point - or if it was available it wasn't going to be a problem!!! After quite a while I found the correct sequence... <19 ... Nf3+!>
20 Kh1? Qxh2#
20 gxf3? Rg6+
21 Kh1 Qh3
22 Qxg7+ Rxg7 (Qxb7 Qg2# and Rg1 Bxf3+ mating)
23 Bxg7 Bxf3+
24 Bxf3 Qxf3+
25 Kg1 Kxg7 +-
<20 Bxf3 Bxf3>
<21 Qxg7+ Qxg7+> <22 Bxg7 Rg6!!> The killer blow. Rf8 is immune as 23 ... Rxg2+ 24 Kh1 Rg6#. <23 g3 Kxg7>
White can resign. Bf3 stands god-like commanding all he surveys. White
can try to survive, but in reality its going to be very difficult. ~~~
Totally missed <21 Qc4!>, but perhaps it was not actually that good. It
got dealt with very swiftly! |
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| Mar-02-18 | | morfishine: The right moves in the wrong order are the wrong moves ***** |
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| Mar-02-18 | | mel gibson: I wasn't sure.
There is no mate.
Stockfish 8 says:
19. ... Nf3+
(19. ..
Nf3+ (♘e5-f3+ ♗e2xf3 ♗b7xf3 ♕c7-c4 d6-d5 ♕c4-f4 ♕h6xf4 e3xf4 ♗f3xd1 ♖f1xd1
♖e6-e2 ♗b2-d4 ♔g8-f7 h2-h3 g7-g6 ♔g1-h2 ♔f7-e6 ♖d1-d3 ♖e2-e4 ♗d4-e5 ♖f8-c8
♖d3-d2 ♖c8-c4 h3-h4 ♖c4-c1 ♔h2-g3 ♖e4-c4 ♔g3-f3 ♖c1-c2 ♖d2-d3 ♖c4-e4 ♗e5-d4
♖e4-e2 ♗d4-e3 ♖e2-e1 ♗e3-d4 ♖e1-e4 g2-g3 ♖e4-e2 ♗d4-e3) +3.12/37 60) score for Black +3.12 depth 37 |
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| Mar-02-18 | | malt: 19...Nf3+ 20.B:f3 B:f3 21.gf3 Rg6+ 22.Kh1 Qh3! 23.Qc4+ Kh8 24.B:g7+ R:g7 Overlooked 21.Qc4 |
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| Mar-02-18 | | Mayankk: I looked at Qh3 for a while but completely missed how it deals with Rg8, using the capture at f3. So I kept trying to make Bxg2 work, totally missing the power of nf3+. 3.5/5 for me this week. Got most of the forcing moves in yesterday’s puzzle but didn’t calculate right till the end. I don’t usually bother to spend too much time on Sat and Sun puzzles - as mostly the nuanced calculations are beyond me. So it will stay at 3.5 I guess. |
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| Mar-02-18 | | patzer2: Got the first two moves 19...Nf3+! 20. Bxf3 Bxf3 -+ of today's Friday puzzle solution, after which I anticipated 21.gxf3 Rg6+ 22.Kh1 Qh3 -+ when play might continue 23.Qxg7+ Rxg7 24.Bxg7 Qxf3+ -+ (Mate-in-21 @ 48 ply, Stockfish 8).
Like <pauldo> and <Chesshighercat>, I was also surprised by the pin 21. Qc4. However, I think I would have been able to find the pin breaking move 21...d5 -+ (-3.02 @ 35 ply, Stockfish 8) easy enough. Though not as strong as 21...d5 -+, also winning after 21. Qc4 are 21...Kh8 -+ (35 ply, Stockfish 8) and 21...b5 22. Qb3 Kh8 -+ (-2.30 @ 35 ply, Stockfish 8). The final shot 22...Qh3! is pretty, but not so difficult. Capturing the poison Queen is technically best, but it's also a resignable prospect because White is down a Rook for a pawn after 22...Qh3! 23.gxh3 Rg6+ 24.Qg4 fxg4 25.Rd6 Rxd6 26.hxg4 Bxg4 -+ (-5.95 @ 33 ply, Stockfish 8). P.S.: White's decisive mistake is 19. Qc7?, allowing our Friday puzzle solution 19...Nf3+ -+ (-2.75 @ 35 ply, Stockfish 8). Instead, 19. Qb3 Qg6 20. f3 ⩲ to ± (+0.64 @ 30 ply, Stockfish 8) leaves White in good shape. |
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Mar-02-18
 | | samvega: Dangnabbit. Vaguely correct idea, critically wrong execution: 19... Bxg2?? 20.Kxg2 Rg6+ 21.Kh1 Qh3 22.Rg1 Nf3, missing 23.Qxg7+. |
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| Mar-02-18 | | BOSTER: I'd play 19...Bxg2, but it was wrong. But 19.Qc7 was wrong too. |
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| Mar-02-18 | | petemccabe: I'm just a 1500 player, but I don't see why white resigned. 23 gxh3 Rg6+
24 Qg4 fxg4
25 Be5 gxh3+
26 Bg3
White's position is not fun, but material is even. And it's a rapid game. If someone can explain what I'm missing, I'll appreciate it. TIA. |
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Mar-02-18
 | | Dionysius1: Hi <petemccabe> At the end of your analysis 26...♗xd5 and Black is a ♖ up |
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Mar-02-18
 | | Jimfromprovidence: Good defense by white with 21 Qc4, preventing 21...Rg6. But he missed the best followup after 21...d5 which is 22 Qf4 below.
click for larger view This move attacks the bishop and forces black to exchange queens but come out an exchange ahead after 22...Qxf4 23 exf4 Bxd1 24 Rxd1. 
click for larger view |
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Mar-02-18
| | ajk68: <petemccabe: I'm just a 1500 player, but I don't see why white resigned. 23 gxh3 Rg6+
24 Qg4 fxg4
25 Be5 gxh3+
26 Bg3 >
26...Bxd5!
Similarly, if:
25. h4 Bxd5! |
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Mar-02-18
 | | gawain: ...Qh3 at some point was going to be the key move. for sure. But how to get there? Thought about starting with that very tempting 19...Nf3+ but concluded, lazily, that this would not work! |
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| Mar-02-18 | | landshark: Saw it thru to 21 Qc4 and thought ....Bxd1; 22. Rxd1, Kh8 sufficient for the win. Nice solid looking position with a clear exchange up. Didn't choose 21... d5 because I missed the nice shot ...Qh3! which is clearly more forcing. |
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| Mar-02-18 | | landshark: Looking further into my line:
21...Bxd1 22. Bxg7 Qg6 23. Rxd1 Kxg7 24. Rxd6 Rff6 and Black is down 2 pawns but a clear rook ahead.
Or 22. Bxg7 Qg6 23. Bxf8 Bf3 24. g3 Kxf8 and black is winning. |
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| Mar-04-18 | | petemccabe: Thanks ahj68 and Dionysus. How obvious. That's why I'm just a 1500. |
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Kibitzing
