Mar-11-22 | | Brenin: 33 Rxc6 Kxc6 (otherwise Black is a piece down, and White has the compensation) 34 Be4+ (to winkle the K out into the open), e.g. 34 ... Kd7 35 e6+, or 34 ... Nd5 35 Qf6+, or 34 ... Kc5 35 Be3+ winning the Q, or 34 ... Kb4 35 e6 and 36 Qe5+. The Black K cannot survive long in this exposed position, with his mate AWOL on a1. This seems at least as strong as the game continuation 34 Qf6+. |
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Mar-11-22 | | raymondhow: I went with 33.Qxf8 which is also winning. Either Black will lose back his queen, or the rook pawn will promote with material advantage. Not quite as decisive as the game move, so I get only half credit. |
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Mar-11-22 | | raymondhow: Of course, the win with 33.Qxf8 depends on following up with 34.Be3. Not so sure I would have found that, was thinking 34.Rg8 which NOT a winner. |
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Mar-11-22 | | raymondhow: Looks like 33.Be3 wins big as well. |
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Mar-11-22 | | Honey Blend: In a blitz game I'd have gone with 33. ♗h6 with a discovered attack on the black queen. If 33. ... ♕xa3 34. ♕f6 with a double threat on c6 and f8, while 33. ... ♘e8 34. ♖xa1 ♘xg7 35. ♗xg7 ♖xh7 36. ♗xf8 is definitely winning. |
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Mar-11-22 | | mel gibson: There are many ways to win with this puzzle -
Black is busted - some examples:
33. e6
33. Be3
33. QxR on f8
33 RxB on c6 is the best as per the text.
I saw QxR or RxB.
Stockfish 14 says:
33.Rxc6
(33. Rxc6 (♖c4xc6 ♕a1-a2 ♗d3-e4 ♘c7-d5 ♖c6-d6 ♖h8xh7 ♕g7xf8 ♕a2-c4+
♗e4-d3 ♖h7-h2+ ♔e2-f1 ♖h2-f2+ ♔f1-e1 ♖f2-f1+ ♔e1xf1 ♕c4-h4 ♖d6-d7+ ♘d5-c7
♗d3-e4+ ♕h4xe4 ♖d7xc7+ ♔b7xc7 ♕f8-d6+ ♔c7-b7 ♕d6-d7+ ♔b7-b8 ♖g1-g8+)
+M14/50 417)
White wins mate in 14. |
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Mar-11-22 | | Cheapo by the Dozen: I went with 35 Qxb6, which the engine thinks is similarly good. The engine also likes 34 Be4+, which was the first thing I thought of. Basically, anything works.
Note: In some lines it's helpful that moving the c1 bishop discovers an attack on Black's queen. Obviously, this is most relevant when the move is check, or when the bishop goes to e3. |
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Mar-11-22
 | | al wazir: I went with 33. Rxc6 Kxc6 34. Qg2+ Nd5 (34...Kc5 35. Bd3#; 34...Kd7 35. 36. e6+ fxe6 36. Qg7+) 35. Bc4 Rd8 36. Rd1. |
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Mar-11-22 | | agb2002: White has the bishop pair and a pawn for a bishop and a knight. White can expose the black king with 33.Rxc6 Kxc6 34.Qf6+: A) 34... Kc5 35.Qd6#.
B) 34... Kb7 35.Be4+
B.1) 35... Ka7 36.Qc6, with the double threat Qb7# and Qxc7#, wins. B.2) 35... Kc8 36.Qc6
B.2.a) 36... Rxh7 37.Qb7+ Kd7(8) 38.Rd1+ and mate in two. B.2.b) 36... Rd8 37.Qb7+ Kd7 38.Bc6+ Ke7 39.Qxc7+ and mate in two. B.3) 35... Kb8 36.Qxb6+ Kc8 37.Bb7+ and mate in two. C) 34... Kd7 35.Rd1
C.1) 35... Kc8 36.Qc6, with the double threat Bxa6+ and Be4, wins. C.2) 35... Rd8 36.Bxa6+ wins.
C.3) 35... Nd5 36.Qd6+ Ke8 (36... Kc8 37.Bxa6#) 37.Bb5+ axb5 38.Rxd5 and mate next. D) 34... Ne6 35.fxe6 must be winning. |
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Mar-11-22 | | goodevans: I went with <33.Bh6 Qxa3 34.Qxf8> which is also winning. Too many winning alternatives for this to be a good puzzle. |
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Mar-11-22 | | Stanco: I played Qf6.
It's mate in 16 |
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Mar-11-22 | | Brenin: <goodevans>: Yes, even the ridiculous move 33 Rg6 wins (albeit laboriously), e.g. 33 ... Qxc1 34 Rgxc6 Qd2+ 35 Kf3 Qd1+ 36 Be2 Qh1+ 37 Qg2 Qxg2+ 38 Kxg2 Nd5 (threatening Ne3+) 39 Kf2 Rxh7 40 Bf3 (effectively pinning the N) Rh2+ 41 Kf1 Rd2 42 Rd6 and the N falls. Alternatively, 33 ... fxg6 34 Rxc6 Kxc6 35 Be4+ Nd5 36 Qxg6+ with a mating attack. |
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Mar-11-22 | | saturn2: White has everything, black nothing.
I had 33.e6 and 33.Rxc6 winning |
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Mar-11-22
 | | perfidious: Everything vs nothing is usually a recipe for a stone-cold win. |
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Mar-11-22
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Mar-11-22 | | Cellist: I had the same line as <al wazir>. According to the engine, it wins completely (+18). Not quite as strong as the game line, but fully winning. |
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Mar-11-22
 | | scormus: <goodevans
Too many winning alternatives for this to be a good puzzle>Yes, too many winning choices today. It seemed strange, normally by this time of the week I am more likely to not find any that I think are winning |
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Mar-11-22
 | | Check It Out: <goodevans> solution is what I came up with, though the exchange sac on c6 was obvious. |
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Mar-11-22 | | johnnydeep: Guessed the first move. And for the next one I chose 34.Qg2+, which the engine rates highly at +18, but still not as good as the mate in 9 game move option. |
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Mar-11-22 | | landshark: Black looks really tied down.
Right away 33.e6 looks strong because if Black takes with the f7 pawn, 34.Qxb7+ KxQ 35. Bf4+ discovers an attack on Black's undefended Q.
And I don't see much that Black can do in an active way either...
No time to really 'solve' this POTD - but in a game I'd probably play 33.e6 and think about my options on Black's clock instead of fretting too much about it on mine... |
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Mar-11-22 | | King.Arthur.Brazil: I found the moves: 33. ♖xc6 ♔xc6 34. ♕f6+ ♔b7 35. ♗e4+. However, didn't know what would be Black answers. For 35...♔c8 the King (me, of course) prepared 36.♕xb6 which threats 37.♕b7+ and 38.♖d1+. But the Egg did fry in other direction... lgs, I guess that my move is superior, since in also wins a ♙. |
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Mar-11-22 | | King.Arthur.Brazil: In the case of 34...♔d7 35. ♗e4! seems stronger than 35.e6+ or 35.♕d6+ since the King places the remaining piece directly in to the attack. |
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