|Sep-26-04|| ||ConLaMismaMano: What was the main error? Maybe instead of 18...b5, could g6 be better? |
|Jun-27-14|| ||SimonWebbsTiger: a case of "storming the barricades", <Big Larry C> style, with a "ROVER" a la St. Louis style.|
The "official" annotations to help solvers.
<a> 20...Nxd7 21. Bxh7 Kh8 22. Bg6 Kg8 23. Rh8 Kxh8 24. Qh5
<b> 20...Nf4 21. Qc2 Nxh3 22. gxh3 Be4 23. Nxf6 Bxf6 24. Qxe4 g6 25. Ne5
<20...Qc7 21. Bxh7 1-0>
If 21...Nxh7 22. Qh5; 21...Kh8 22. Bb1 Kg8 23. Nxf6 Nxf6 24. Bh7 Kh8 25. d5 g6 26. Bxg6 Kg7 27. Rh7 Kxg6 28. Qd3
|Jun-27-14|| ||Cheapo by the Dozen: I'm starting out stumped. White doesn't have much of an attack unless he can get rid of the f6 knight, which has an outpost knight defending it. The one promising approach I see is 20 Nd7, because|
20 Nd7 Nxd7
21 Bxh7+ Kh8
22 Bb1+ Kg7
wins via the unstoppable threat of Qh8+.
But if Black declines his knight, it's hard for White to just snatch the exchange, because Black has his own fork with ... Nf4, as in:
20 Nd7 Qc7
21 Nxf8 Nf4
So what I'd play over the board is
20 Nd7 Qc7
21 Nxf6+ Nxf6
I like this position for White, Black's various open lines notwithstanding, but I hardly feel I've solved the puzzle.
|Jun-27-14|| ||al wazir: White can play 20. Nd7, forking ♕ and ♖ , but black can fork right back with Nf4. But so what? 21. Qc2 Nxh3+ 22. gxh3, and now if black plays 22...Qc7, white has 23. Nxf6+ and Qxh7#. Black must play 22...Rd8, giving up his ♕ for ♖+♘.|
|Jun-27-14|| ||M.Hassan: "Difficult"
White to play 20.?
Sides are equal
At first I tempted to go for 20.Bxh7+ but dropped it out soon as being immatured and there were no results, instead I thought to deviate the supporter of h7 square, i.e Nf6
Threatening mate on h7 or h8
<23...f6 opening an escape square for the King 24.Bxe6+ Rf7 25.Qxf7#
I saw another line of solution:
20.Nf7 Nf4 Forking Queen & Rook
21.Qc2 threatening mate on h7
Time to check
Why Black resigned after 21.Bxh7?
|Jun-27-14|| ||M.Hassan: 21.Bxh7+ Nxh7
Black can defend and can continue playing. Am I correct?. Appreciate comments
|Jun-27-14|| ||Marius: Hassan; 22. Qh5, target is h8 not h7 which knight could hâve protected|
|Jun-27-14|| ||al wazir: <M.Hassan: 21.Bxh7+ Nxh7 22.Qc2 Ndf6. Black can defend and can continue playing. Am I correct?> No: 22. Qh5 Ndf6 23. Nxf6+, followed by 24. Qxh7# or 24. Qh8#.|
|Jun-27-14|| ||pawn to QB4: <20.Nd7 Nxd7
23.Qh5 > also, in this line not 23. Qh5 but 23. Rh8+, 24. Qh5+ and mate on h7.
|Jun-27-14|| ||morfishine: <20.Nd7>|
|Jun-27-14|| ||Balmo: All hail Larry Christiansen, King of the cheapos! Great tactical player.|
|Jun-27-14|| ||Penguincw: I got 21.Nd7+ with 22.Bxh7+ to follow, so good enough for me. :)|
|Jun-27-14|| ||Eduardo Leon: 20.♗xh7+ fails to 20...♘xh7 21.♕h5 ♘df6. We have no way to dislodge the ♘d5, but we do have...|
<20.♘d7 ♕(any) 21.♗xh7+ ♘xh7 22.♕h5 ♘df6 23.♘xf6+>
|Jun-27-14|| ||sombreronegro: Black's two most important pieces are the queen materially and the knight on f6 positionally. |
20 Nd7 forks those pieces. B X h7+ and a discovered check to open the h file? Looks too easy for a Friday.
Time to receive correction as needed...
Ah really? This is a Tuesday puzzle. Yes I got it but too easy for Friday IMHO
|Jun-27-14|| ||Oxspawn: I started with
20. Nxf7 and things went downhill from there.
Playing the game out, as described by <SimonWebb'sTiger> I was struck by the way that after 20. Nxd7, the white bishop, rook and queen conduct a stately dance with the King (who gavottes between h8 and g8) before the queen discomforts him on h7. It is a kind of ceremonial execution. No wonder black resigned. And no, <sombreronegro>, this is not a Tuesday puzzle. I can do Tuesday puzzles. I can only observe Friday puzzles.
|Jun-27-14|| ||kevin86: Black's position is horsemeat.|
|Jun-27-14|| ||Chess Dad: I saw 20. Nd7, but wasn't expecting Qc7, and I'm not sure what I would have played in response. I clicked through too quickly after seeing that I had move 20 correct.|
|Jun-27-14|| ||kjr63: 20.Nd7 Nf4 and takes a rook with a check|
|Jun-27-14|| ||agb2002: The material is identical.
Black threatens 20... bxc4.
The first idea that comes to mind is 20.Bxh7+, but after 20... Nxh7 21.Qh5 Ndf6 22.Qh4 Rfd8 23.Ng4 bxc4 25.Nxf6+ Bxf6 26.Qxh7+ Kf8 27.Ba3+ Ke8 White is one piece down and the black king seems to escape. This suggests 20.Nd7, trying to divert the knight on f6 or to remove one of them:
A) 20... Nxd7 21.Bxh7+ Kh8 22.Bb1(c2..g6)+ Kg8 23.Rh8+ Kxh8 24.Qh5+ Kg8 25.Qh7#.
B) 20... Qc7 21.Bxh7+
B.1) 21... Nxh7 22.Qh5
B.1.a) 22... Ndf6 23.Nxf6+ and mate next.
B.1.b) 22... f5 23.Nce5 Bh4 (23... Ndf6 24.Nxf6+ Rxf6 25.Qxh7+ Kf8 26.Qh8#) 24.Rxh4 Ndf6 25.Nxf6+ Rxf6 26.Qxh7+ Kf8 27.Qh8+ Ke7 28.Qxg7+ wins decisive material.
B.1.c) 22... f6 23.Qxh7+ Kf7 24.Nxf8 Bxf8 (24... bxc4 25.Qg6+ Kg8 (25... Kxf8 26.Rh8#) 26.Rh8+ Kxh8 27.Qh7#) 25.Ne3 + - [R+P vs B] and attack.
B.2) 21... Kh8 22.Bb1+ Kg8 23.Nxf6+ Nxf6 (23... Bxf6 24.Rh8+ and mate in two; 23... gxf6 24.Qg4#) 24.d5
B.2.a) 24... bxc4 25.Bxf6 Rfd8 (25... gxf6 26.Qg4#; 25... Bxf6 26.Rh8+ and mate in two; 25... g6 26.Rh8#) 26.Rh8+ Kxh8 27.Qh5+ Kg8 28.Qh7+ Kf8 29.Qh8#.
B.2.b) 24... g6 25.Qe3 and the threat 26.Qh6-27.Qh8# looks decisive.
C) 20... Nf4 21.Qc2 (with the double threat 23.Nxf6+ followed by 24.Qxh7# and 23.Nxb8) 21... Nxh3+ 22.gxh3 g6 23.Nxb8 bxc4 24.bxc4 Rxb8 25.d5 + - [Q+P vs R+N].
|Jun-27-14|| ||Cheapo by the Dozen: I might need a board to play through the last bit of <agb2002>'s analysis. ::sigh:: My calculation abilities are NOT what they were 4 decades ago ...|
|Jun-28-14|| ||TheBish: Christiansen vs J B Campos-Moreno, 1980|
White to play (20.?) "Difficult"
Material is even. White has a knight under attack, but maybe can ignore that with a direct assault on h7, as two pieces (Bb1 and Rh3) are aimed there already, and the White queen is ready to join the party.
Candidate moves: Bxh7+, Nd7
The problem with 20. Bxh7+ Nxh7 21. Qh5 is 21...Ndf6, stopping the attack dead in its tracks. A better try is 20. Bxh7+ Nxh7 21. Nd7, but Black has 21...Nf4! 22. Qc2 Nxh3+ 23. gxh3 Qf4 and the attack is killed.
20. Nd7! is the right move order. Now:
(A) 20...Nxd7 21. Bxh7+ Kh8 22. Bf5+! Kg8 23. Qh5 f6 24. Bxe6+ Rf7 25. Qh8#.
(B) 20...Nf4 21. Qc2! Nxh3+ 22. gxh3 Be4 23. Nxf6+ Bxf6 24. Qxe4 g6 25. Ne5 and White has two pieces for a rook.
(C) 20...Qc7 21. Bxh7+! and wins, e.g. 21...Nxh7 22. Qh5 Ndf6 23. Nxf6+ and mates, or 21...Kh8 22. Nxf6 Nxf6 23. Ne5 and White's attack continues, a pawn up.
|Jun-28-14|| ||agb2002: <Cheapo by the Dozen: I might need a board to play through the last bit of <agb2002>'s analysis. ::sigh:: My calculation abilities are NOT what they were 4 decades ago ...>|
I do use a board to solve the puzzles (without moving the pieces, of course). My eyes get very tired when I try to use the diagram only.
|Jun-10-16|| ||Howard: I don't know where else to post this inquiry, so I might as well do it on this page.|
Why were Browne, Kavalek, and Robert Byrne--of all people--absent from the U.S. team at the 1980 Olympiad. There obviously must have been SOME concrete reason, but I don't know why.