Feb2213   hilfsmatt: Tuesday puzzle after 26 ...Qg5 ? 

Dec2013
  offramp: No. Friday puzzle after 26...Qg5. 

Dec2013   BxChess: If instead of 30 ...Nd7, which leads to the neat Q sacrifice by White followed by mate in 3, Black tries 30...Kf6,
then 31 Rf1+ Kg6, 32 Qxf7+ Kh6, 33 Nf5+ Qxf5, 34 Rxf5 g6 35 Bc1+ g5 36 Nxg5# 

Dec2013   Cheapo by the Dozen: If Black interposes at e7, the win is
28 Ne6+ Nxe6
20 Bxd6+
At the moment I'm still missing a couple of other lines. 

Dec2013   LIFE Master AJ: 27.Rf7+! followed by 28.Qc6+ looks to be the start of an extremely strong attack. (I only used about 57 minutes, and did not finish my analysis  some of the lines branch, and I am getting tired.) 

Dec2013
  al wazir: I missed it. But I think my 27. Bxc5 also wins: 27...dxc5 (27...bxc5 28. Rb7+ Kd8 29. Rb8+ and mate next) 28. Ndb5+ (28. Nc6+ Rxc6 29. Qxc6, my original idea, doesn't work) axb5 29. Nb5+ Kb8 30. Rxf8 Rhxf8 31. Qd6+ Ka8 32. Nc7+, etc. 

Dec2013   abuzic: 27.Rf7+ Nxf7
28.Qc6+ Kd8
29.Rf1 Qg4
<29...Qe3+ 30.Kh1 Ne5 31.Qc8+ Ke7 32.N(any)c6+ Nxc6 33.Nxc6#; equal is 32.Qc7+ Ncd7 33.Bxd6# (or 32...Ned7 33.Nac6#> 30.Bxc5 dxc5
31.Qxb6+ Kd7
32.Qc6+ Kd8
33.Qb7 Re7
34.Qb8+ Kd7
35.Qc8+ Kd6
36.Qc6+ Ke5
37.Qxe5#
29.Qxb6+ takes more moves but also mates:
29...Ke7
30.Qc7+ Kf6
<30...Nd7 31.Qxd7+ Kf6 <(31...Kxd7 32.Rb7+ Kd8 33.Ndc6#)> 32.Rf1+ Kg6 33.Qxf7+ Kh6 34.Nf5+ Qxf5 35.Bc1+ e3 36.Rxf5 g6 37.g4 Rg8 38.Rh5+ gxh5 39.Qf6+ Rg6 40.g5#> 31.Rf1+ Ke5
<31...Kg6 32.Qxf7+ Kh6 33.Bc1+ mate theme above> 32.Ndc6+ Kd5
33.Qxf7+ Re6
34.Nb4+ Kc4
35.Qf2 Na4
36.Qe2+ Kc5
37.Nd5+ Kxd5
38.Qd1+ Kc4
39.Qb3+ Kd4
40.Nc6# 

Dec2013   marcwordsmith: what if black refuses the rook sac? What if plays, for example, Re7 instead of Nxf7? 

Dec2013   WoodPushkin: Greetings
While 27. Rf7+ initiates the queen invasion I only saw till 30... Kf6 31.Rf1+ Kg6 32. QxNf7+....which is not so hard to get to but it is only up a piece and in my head didn't scream obvious checkmate. I would have entered this sac like 1960'sTal, pretty sure it works but can't see it to conclusion. JAH love 

Dec2013   abuzic: <marcwordsmith: what if black refuses the rook sac? What if plays, for example, Re7 instead of Nxf7?> 27.Rf7+ Re7 28.Ne6+ wins the Q and or mates:
28...Kd7
<28...Nxe6 29.Qxd6+ Kb7 30.Rxb6+ Kxa7 31.Qb8#; 28...Kb8 29.Qxd6+ Ka8 30.Qd8+ Kxa7 31.Qxb6+ Ka8 32.Qb8#> 29.Nxg5 Rxf7 30.Bxc5 Be7 31.Qe6+ Kc7 32.Bxb6+ Kb8 33.Bc5+ Kc7 34.Nxf7 Re8 35.Bxd6+ Bxd6 36.Qxd6# 27...Be7 28.Ne6+ also wins the Q and or forces mate 

Dec2013   abuzic: abuzic: <al wazir:> 27.Bxc5 loses to ...Nf3+
<BxChess: If instead of 30 ...Nd7, which leads to the neat Q sacrifice by White followed by mate in 3, Black tries 30...Kf6, then 31 Rf1+ Kg6, 32 Qxf7+ Kh6, 33 Nf5+ Qxf5, 34 Rxf5 g6 35 Bc1+ g5 36 Nxg5#> this line mates neatly, but longer after
35...e3 36.Rf3 Bg7 37.Rh3+ Kg5 38.Rg3+ Kh5 39.Qf4 Bf6 40.Rh3+ Bh4 41.g5# (on move 36... there are alternative lines, like 36...Nd3 37.Qf6 Nf2 38.Rxe3 Kh5 39.g4+ Kxg4 40.Rg3+ Kh5 41.Qg5#) 

Dec2013   zb2cr: Totally missed this one. I spent a lot of time analyzing 27. Bxc5, then saw the 27. ... Nf3+ defense and was flummoxed. 

Dec2013   abuzic: After 27.Rf7+, black has 8 possible responses:
1) <27...Kd8> 28.Qa8# 2) <27...Kb8> 28.Rxb6+ Nb7 29.Qxb7# 3) <27...Ned7> 28.Qc6+ Kb8 29.Rxb6+ Nxb6 30.Qe8+ Qd8 31.Nac6+ Ka8 32.Ra7# 4) <27...Qe7> 28.Bxc5 dxc5 29.Ne6+ Kb8 30.Rxb6+ Kxa7 31.Qb7+ Qxb7 32.Rfxb7+ Ka8 33.Nc7# 5) <27...Ncd7> 28.N(any)b5+ axb5 29.Nxb5+ Kb8 30.Bxd6+ Bxd6 31.Qxd6+ Ka8 32.Qa3+ Kb7 33.Qa7+ Kc6 34.Qc7+ Kd5 35.Qd6+ Kc4 36.Rb4# <27...Nxf7, ...Re7 and ...Be7> are discussed in other posts. 

Dec2013   morfishine: Something dramatic must happen because Black threatens 27...Nf3+ winning the White Queen <27.Rf7+> 27...Nxf7 28.Qc6+ (I only found this once I realized 28.Qxf7+? is thwarted by 28...Re7) 28...Kd8 29.Qc8+ Ke7 30.Nac6+ Kf6 31.Rf1+ Kg6 32.Qxe8 I figured White was winning here, but it turns out it wasn't so easy
click for larger view*****
PM1: A marvelous finish by White! I wouldn't have seen that in a million years. With the aid of a PGN viewer, I checked to see if my continuation holds up If now 32...Qd5 33.Bxc5 bxc5 (33...dxc5? is a mistake since Black must maintain control over e5: 33...dxc5 34.Rxf7 Qxf7 35.Qxe4+ Kh5 [35...Kf6 36.Qf5# or 35...Kh6 36.Qh4+ Kg6 37.Ne5#] 36.g4+ Kg5 37.Nf3+ Kh6 38.g5+ Kh5 39.Nce5) 34.Rxf7 Qxf7 35.Qxe4+ Kh5 36.g4+ Kg5 37.Nf3+ Kh6 38.Nd8 Qe7 39.g5+ Kh5 40.Ne6 h6 41.Nf4+ Kg4 42.h3+ Kg3 43.Ne2+ Kxh3 44.Qh4#
click for larger view***** 

Dec2013   gofer: The combination is a sweet one. A case of putting black in
a position where each decision leads done a more difficult
decision... ...and each path leads to his doom!
<27 Rf7+ ...>
27 ... Kd8 28 Qa8#
27 ... Kb8 28 Rxb6+ mating
27 ... Re7/Be7
28 Ne6+ Nxe6
29 Bxd6+ Kd7
30 Bxe7+
<27 ... Nxf7>
<28 Qc6+ ...>
28 ... Kb8
29 Qxb6+ Ka8
30 Nac6 mating
<28 ... Kd8>
<29 Qc8+ Ke7>
<30 Nc6+ Kf6>
<31 Rf1+ Kg6>
<32 Qxe8>
Poor old black, a few moves earlier he was hoping to be able to
play Nf3+ winning white's queen, now he is putting on hit coat... ~~~
Yep! But a slight variation. I did see the rook and 2 knights mate,
but didn't think black would go there I thought the king would just
leg it... 

Dec2013   mel gibson: Black lost the game with 23.... Qxf4.
It gave an open powerful f file, which white attacked with it's Rook,
giving a handy check for white.
The correct move was 23.....b6.
24. f5 Rg8 etc.
It then leads to a draw according to my computer. 

Dec2013   diagonalley: well ... after much gazing, 27. RB7+ did look the most likely candidate  but it was not at all easy to calculate all of the possible continuations... can somebody with a machine come up with any viable defence for black(?)... 

Dec2013   Stormbringer: Huh. I wanted to do Rf5, threatening the queen and directly attacking the knight that needs to be moved away. 

Dec2013
  Penguincw: Oops! Wrong rook sacrifice (27.Rxb6). 

Dec2013   Nick46: Neat finish. Rev. Palmer got run over by the Carr. (Reminiscent of the "Fish called Wanda" steamroller scene.) 

Dec2013
  kevin86: My move was Rf5 chasing the queenthe sacrificing the rook for the knight. The actual move was far more vigiorous. 

Dec2013   Patriot: I had several main candidates and finally saw a flaw in both! 27.Rxb6 and 27.Bxc5 can both be defeated with 27...Nf3+ followed by 28...Qxd5. I didn't notice the xray of both queens, which kind of concerns me because this is something I've focused on in the past. 27.Rf7+ is more forcing than both and I think I see a reason for tossing the rook. 27.Rf7+
27...Nxf7 28.Qc6+ Kd8 29.Qc8+ Ke7 30.Nac6#
27...Nxf7 28.Qc6+ Kb8 29.Rxb6+
27...Be7 28.Ne6+ Nxe6 29.Qxd6+
27...Re7 28.Ne6+ Nxe6 29.Qxd6+
27...Kd8 28.Qa8#
27...Kb8 28.Rxb6+ Nb7 29.Qxb7#
27...Qe7 just loses. 

Dec2013   Patriot: I couldn't visualize the vacant f6 square in the first line for some reason. 

Dec2013   Patriot: <morf>  Good job! I failed to see the 27...Nf3+ threat from the getgo. 

Dec2013
  agb2002: White is three pawns down.
Black threatens 27... Nf3+ winning the queen and 27... Qe3+ winning the bishop. The position of the black king and white pieces suggests 27.Rf7+: A) 27... Kb8 28.Rxb6+ Nb7 29.Qxb7#.
B) 27... Kd8 28.Qa8#.
C) 27... Nxf7 28.Qc6+
C.1) 28... Kb8 29.Qxb6+ Ka8 30.Qc6+ Kxa7 31.Bxc5+ dxc5 32.Qb7#. C.2) 28... Kd8 29.Qc8+ Ke7 30.Nac6+ Kf6 31.Rf1+ Kg6 32.Qxe8 Qe3+ 33.Kh1 Qxa3 34.Qxf7+ Kh6 (34... Kg5 35.Rf5+ and mate next) 35.Nf5+ Kg5 36.Nxg7 looks winning. D) 27... Re7 28.Ne6+
D.1) 28... Nxe6 29.Qxd6+ Kb7 30.Qxb6+ Ka8 31.Qb8#.
D.2) 28... Kb8 29.Qxd6+ Ka8 (29... Kxa7 or 29... Kb7 30.Qxb6+ Ka8 31.Qb8#) 30.Qd8+ and mate in two. D.3) 28... Kd7 29.Nxg5 +  [Q vs R+3P]. 
