Jun0914   otto80: a beauty of a game, 22 Rd6!! was a shock to Gufeld, there was a chess life article where Gufeld talks about this game 

Mar2420
  al wazir: 29...Qxc6. Now what?
I guess 30. Rd6 Qc8 31. Ne4 Re6 32. Rxe6 fxe6 33. Nf6+ Kf7 34. Qxh7+ Kf8 35. Qh6+ Ke7 36. Qh7+ Kd8 37. Qxg6 is enough to win. Is there something better? 

Mar2420
  An Englishman: Good Evening: Given my recent flubbing of Tuesday puzzles, relieved to solve this one, but it still proved difficult. Took a while to figure that after White's 2nd move, Black will remain suprisingly helpless. 

Mar2420   pokerplayer: After 29...Qxc6, 30. Nf5 or Nh5 will win easily. 

Mar2420   greenfield67: <al wazir> 30. Nh5, and the g6 pawn is now pinned to the queen. 

Mar2420   Walter Glattke: Black has a rook for bishop and pawn. White threatens Qg7#, black has no check.
So 29.Nh5 gxh5 30.e7 fxe7 31.Rg5+ Kf7 32.Qg7# 

Mar2420   saturn2: I looked at something else.
29. Rxd3 cxd3 30. Bxd3
Now Qh7 Bd3 and Nh5 threaten mate.
30...Qxc6 31. Nh5 gxh5 32. Bxh7+ Kh8 33. Bg6+ Kg
8 34. Qh7+ Kf8 35. Qxf7 mate 

Mar2420   saturn2: Or 29. Rxd3 Qxc6 (instead of cxd3)
30. Rd6 Qc5 31. Nh5 same as before 

Mar2420   SpamIAm: <saturn2>, in your suggested line 29.Rxd3 cxd3 30.Bxd3 perhaps black can try 30...Nxe5!? Looks like 31.Nxe5 R(Q)xe5 leads nowhere as now 32.Nh5 can be met by 32...R(Q)xh5. And on the immediate 31.Nh5 it looks like 31...f5 may hold, e.g. 32.Nf6+ Kh8 33.Nxe8 Rxe8 34.Nxe5 Qxe5! (of course not 34...Rxe5?? 35.Qf8#!). Similarly 31.Nf5 seems to lead nowhere after 31...f6. 

Mar2420   Walter Glattke: After 29.Nh5 gxh5 30.e7 Rxe7!! 31.Rg5+ Rg6 32.Ne7+ Kh8 33.Rxg6 fxg6 34.Nxg6+ Kg8 35.Ne7+ Kf7 36.Qh7+ Ke6 37.Qe4+ Qe5 38.Qxa8 Kxe7 black wins. 29.Rxd7 Qxc6 at least a bishop more after e.g. 30.Rd6 Nxe5 31.Rxc6 Nxc6 32.Nh5 gxh5 33.Qxc6, 30.Qc7 31.Ne4 f5 32.Nf6+ Kf7 33.Qxh7+ Kf8 34.QxQ 

Mar2420   Brenin: In the game, after 29 Rxd7, Qxc6 loses to 30 Nh5 forcing gxh5 31 Qxc6, e.g. 31 ... Nxe5 32 Qh6 (threatening Bxh7+ with mate to follow) Ng6, and then f4 or Rxf7 are decisive. 

Mar2420   mikealando: Wow! Nice game.<22 Rd6!! was a shock to Gufeld>22. Rd6!! is "scary". 

Mar2420   TheaN: This is not necessarily 'easy' as there are so many roads, but just one works definitely. There are a few patterns here: 1) Ne4f6+xf6xf6 with Qg7#.
2) Ne4f6+ with Qxh7# if Nd7 moves.
3) Ne4g5 with Qxh7+.
4) Nh5 with R/Bxd3 aiming at g3/h7.
5) Ne7+ magnet.
6) e6 to disrupt coordination.
7) Rxd7 to take out a defender.
Usually in combinations taking out defenders first is better practice then going for the direct ideas first. In this case, Nd7 does aim at a lot of squares, but the key is <f8>. After Nf8, Black defends h7 and can interpose on g6, basically defusing all of the direct ideas. If White does not threaten h7 but f6 the knight can just stay where he is. So, <29.Rxd7> first. The drawback of defender slashing is that the opponent is usually less obliged to retake. In this case also, 29....Qxd7 is too direct, as 30.Ne4 and there's no real defense against Nf6: Black played 30....Re6 but this already fails on 31.Nf6+ anyway, due to 31....Rxf6 (else Qxh7#) 32.exf6 with 33.Qg7#. After 29....Qxc6 however, Black attempts to disrupt White's coordination. Now, White can follow up with the 4th plan as the gpawn is pinned: 30.Nh5 gxh5 (else Qg7#) 31.Qxc6 + and White should be winning. This is a typical 'muddy position': a lot of ways to go wrong for White, even though he's clearly winning. 

Mar2420
  gawain: This one was not easy for me! In fact I failed to solve it. Looked for forcing moves but did not get beyond Nh5 and the like. I did not grasp how badly Black's position would fall apart with the removal of the d7 knight. A really good puzzle. 

Mar2420
  chrisowen: Red admiral? 

Mar2420
  rodchuck: I guess after 22 ...Qxd6, there follows 23 Nh5 Ne6 (the black Queen is pinned)24 Ng5 with unstoppable mate. 

Mar2420   agb2002: White has a bishop and pawn for a rook.
At the moment, Qxc6 is not a real threat because of Nh5. White has Rxd7, to weaken f6, and e6, to unblock the rook. In the case of 29.e6 Rxe6 seems to hold (30.Nh5 gxh5 31.Rg5+ Rg6 32.Ne7+ Kh8 33.Nxg6+ fxg6 34.Rxg6 Nf8). In the case of 29.Rxd7:
A) 29... Qxd7 30.Ne4
A.1) 30... Re6 31.Nf6+ Rxf6 (31... Kh8 32.Qxh7#) 32.exf6 and 33.Qg7#. A.2) 30... Qxc6 31.Nf6+ Qxf6 32.exf6 and mate in three. A.3) 30... f5 31.Nf6+ wins decisive material.
B) 29... Qxc6 30.Nh5 gxh6 31.Qxc6 wins.
C) 29... Qc8 30.Ne7+ Rxe7 31.Rxe7 wins a piece at least. D) 29... Qb6 30.Ne4 wins. 

Mar2420
  chrisowen: Flame goes out! 

Mar2420   Brenin: <rodchuck> After 22...Qxd6 23 Nh5 Black's best way of avoiding mate is Qf6, but then after 24 Nxf6+ Nxf6 White has Q for R+N and a much better position. 

Mar2420
  takchess: I got this one but failed yesterday.... This is either in CTART or one very similar to it. Given the Queen on h6 and a lone defender of f6 it felt like a race to get a Knight or a pawn on f6. 

Mar2420   King.Arthur.Brazil: I went wrong with 29. ♘h5 gxh5 (forced) 30. e6 But now, Balck only loses if he plays 30...fxe6 ?? 31. ♖g5+ ♔f7 32. ♕g7# . With 30...♖xe6 31. ♖g5+ ♖g6 32. ♘e7+ ♔h8 33. ♘xg6+ fxg6 34. ♖xg6 ♘f8 or 33.♖xg6 fxg6 34.♘xg6+ ♔g8 white earns nothing. Even with ♘7e5 31. ♗xd3 not ♖xe6 ?? due to 32. ♕xh7+ ♔f8 33. ♕h8# but the simple 31...cxd3 32. exf7+ ♘xf7... game over. Therefore, the correct answer is 29.♖xd7. However, here too Black answer is bad. The move 29...♕xd7 lose because of obvious 30.♘e4!, while 29...♕xc6 lose due to 30.♘h5 which win the ♕. 

Mar2420   eblunt: Doesn't 28 ♘e4 work just as well ? Was the double rook sac really needed ? I can't see a move that stops 29 ♘e6+ except by losing a lot of material. 

Mar2420   RandomVisitor: After 22.Rd6 it looks like white is in charge, but black has unexpected counterplay with 22...f6! click for larger viewStockfish_20032021_x64_modern:
<54/79 16:48 0.00 22...f6 23.Red1 Ne6> 24.Nh4 Nf4 25.Nf1 c4 26.Ne3 Nc5 27.Rb6 Ra6 28.Rxb5 Be6 29.Rd2 Nfd3 30.Bxd3 Nxd3 31.Ng4 Bxg4 32.hxg4 Qd7 33.Rc5 Qf7 34.Rb5 

Mar2420   RandomVisitor: After 22...c4 it is all over for black.
click for larger viewStockfish_20032021_x64_modern:
<44/78 04:06 +4.77 23.Nf5 gxf5 24.exf5> Ra6 25.Rxa6 Bxa6 26.Qxa6 Rb8 27.Qa7 Re8 28.Qb7 Rb8 29.Qc7 Re8 30.Be4 Nf6 31.Qxe7 Rxe7 32.Bc6 e4 33.g4 h6 34.Re2 N8d7 35.Bxb5 Nc5 36.Bxc4 Re8 37.Nd4 Rd8 38.Kh2 Ne8 39.Kg3 Kg7 40.f3 Nd6 41.Bd5 exf3 42.Kxf3 Nb5 43.Nxb5 Rxd5 44.Nd4 Rd8 45.h4 Rb8 46.Rd2 Nb3 47.Nxb3 Rxb3 48.Re2 Rb8 49.g5 hxg5 50.hxg5 Rb5 

Mar2420
  al wazir: <pokerplayer: After 29...Qxc6, 30. Nf5 or Nh5 will win easily.> <greenfield67: 30. Nh5, and the g6 pawn is now pinned to the queen.> I should have seen that. Thanks, both of you. 
