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| Oct-13-11 | | jackpawn: Wow, it really helps to wake up from a 10 hours sleep (extremely rare for me!). I found the Qf6+ solution almost immediately. |
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Oct-13-11
 | | sevenseaman: < Memethecat> An integrated, comprehensive solution today. Good. |
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Oct-13-11
 | | Patriot: Black threatens mate several ways so white's move must be very forcing. It looks like 51.Qf6+ will at least draw. |
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| Oct-13-11 | | gofer: This a game of two halves... ...at least!
White is a full Bishop up, but Black has the white king in a mating net, but White has the black king in a mating net, but Black is threatening mate starting with Qxf1#, Qg1# and Rg1#, but can even play Qf3+ mating. White has no immediate mating threats, some useful tries, but nothing concrete. Now we come to the most important factor. It is white to move. <51 Qf6+ Kh5>
<52 Qxf7+ Kh4>
<53 Qe7+ Kh5>
<54 Qc5+ ...>
White forces the exchange of queens into a won endgame. Time to check... |
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| Oct-13-11 | | newshutz: <jackalope> how about ...Rc8 instead of ...Rc1. 35.Rd8 Qb6+ to bring more cover to d8
36.Kh1 Rc8 to guard the Rf8 with an x-ray
And I think black fine. |
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Oct-13-11
 | | Treestar: Black’s king is nicely hemmed in. Can white achieve more than a draw by perpetual? I think so by forcing the black king to h5 and then check with Qc5. The manoeuvre is logical, Black cannot take the Queen or put any pawns or pieces between or else mate follows. So, <51 Qf6+, Kh5 52 Qxf7+ (snack on pawn) Kh4. 53 Qe7+! Kh5 54 Qc5+ etc> time to compare notes… |
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Oct-13-11
 | | agb2002: White is a bishop up.
Black threatens 51... Qxf1#, 51... Q(R)g1#, 51... Qf3+, etc. The position of the black king suggests the possibility of a corridor mate. Therefore, 51.Qf6+: A) 51... gxf6 52.Rxh6#.
B) 51... g5 52.Q(R)xh6#.
C) 51... Rg5 52.Qxg5#.
D) 51... Kh5 52.Qxf7+ (52.Qf5+ Kh4 but not 52... g5 53.Qxf7+ Kh4 54.Rxh6# nor 52... Rg5 53.Qxg5#) D.1) 52... g6 53.Qd5+ g5 (53... Kh4 54.Rxh6#; 53... Rg5 54.Qxg5#) 54.Qf7+ Kh4 55.Rxh6#. D.2) 52... Rg6 53.Qf5+ Kh4 (53... Rg5 54.Qxg5#) 54.Qh3#. D.3) 52... Kh4 53.Qe7+ Kh5 (53... g5 54.Qe8+ Kh4 55.Rxh6#; 53... Rg5 54.Qxg5#) 54.Qc5+ Qxc5 55.bxc5 Rxf4 56.Bg2 + - [B]. I have repeated ... Rg5 Qxg5# five times because quite often there is a subtle detail which may avoid the winning move (Qxg5#) in one of the lines but one still thinks that it is possible. It's some kind of discipline. |
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Oct-13-11
 | | awfulhangover: <ounos: Hard for a Wednesday.>
Agree,that's why they published it on a thursday:-/ |
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| Oct-13-11 | | jackalope: <morfishine> and <newshutz> - Thanks! The embarrassing part is I probably would have missed the simple refutation OTB. Rd8 just looked too tasty :-) |
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Oct-13-11
 | | kevin86: I saw the possible mates,but I missed the key forced queen exchange after 53... h5 54  c5+.White ends up a bishop ahead. |
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| Oct-13-11 | | CHESSTTCAMPS: White is a bishop up with the black king far from the comforts of home, but it is black who threatens three different checkmates on the move. So white has no choice but to examine the consequences of a checking sequence. My first candidate hit paydirt. 51.Qf6+! forces quick mate in most lines:
A) 51... gxf6 52.Rxh6#
B) 51... g5 52.Q/Rxh6#
C) 51... Rg5 52.Qxg5#
D) 51... Kh5 52.Qxf7+ (Qf5+ safely repeats moves if white is in time trouble) g6 53.Qd5+! (centralization, as so often the case, is the key) g5 54.Qf7+ Kh4 55.Rxh6# D.1) 52... Rg6 53.Qf5+ Kh4 (Rg5 54.Qxg5#) 54.Qh3#
D.2) 52... Kh4 53.Qe7+! Kh5 (Rg5, g5 both allow mate) 54.Qc5+! Qxc5 55.bxc5 Rxf4 56.Kg2 wins easily with the extra bishop. D.3) 53... Rg5 or Kh4 both allow mate next.
Pretty puzzle - time for game review. |
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Oct-13-11
 | | chrisowen: F6 lip scyn the savage to finity and beyond climbs I kh5 flirted then reject helium waver c5 takes pawn comic book Boologean and o black days are numbered it must have given him the beegees! Try it is zebra check red kh5 swell pawn capture queen shuffle rook over come up with a plan got f6 e7 and grip black silver birch wood stick to the <daimano>? |
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Oct-13-11
 | | Jimfromprovidence: I thought that this was a perpetual at best. I missed the key 53 Qe7+ 54 Qc5+ sequence. |
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| Oct-13-11 | | LIFE Master AJ: 51.Qf6+! (Of course, Black cannot take, because of RxP/h6#) Now the White Queen snips a Pawn or two, all with check ... I think that Black will resign shortly. |
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| Oct-13-11 | | BOSTER: Only glancing at the position I saw 51.Qf6+ Kh5 (if gxf6 Rxh6#) 52.Qf5+ and here I'd offer a draw, seeing too much black forces near white king.
And, of course, I was wrong. I guess this is what I call <the puzzle look>. But when you play game during many hours, you understand the position more deeply. White wins the game in couple more moves after exchange the queens. Certainly I can find another explanation of my mistake using the famous <Heisman' & Patriot> expression "Quiescent Errors". |
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Oct-13-11
 | | Memethecat: thanks <ssm> hopefully time served is beginning to show some returns, however its the weekends that are still beyond me. |
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Oct-13-11
| | sevenseaman: Ha ha! < awfulhangover: <ounos: Hard for a Wednesday.> Agree,that's why they published it on a thursday:-/> Excellent repartee! First time I've seen an avatar in full sync with the poster's comment. |
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Oct-13-11
 | | sbevan: <Jose Ortiz Elias: This is a wonderful position! Here is my idea: 51. Qf6+ wins. Let's see: a) 51. …, Rg5; 52. Qxg5 checkmate.
b) 51. …, Kh5; 52. Qxf7+,…
b.1.) 52. …, Rg6; 53. Qf5+, Rg5 (o Kh4); 54. Qh3 checkmate. b.2.) 52. …, g6; 53. Qd5+, Rg5 (53. …, g5; 54. Qf7+, Kh4; 55. Rxh6 checkmate) 54. Qd1+, Rg4 (54. …, Kh4; 55. Rxh6+ and checkmate to follow); 55. Bh3, an incredible position: white stop all checkmates, there's only 55. …, Qxf4; 56. Qxg4+,Qxg4; 57. Bxh4+,Kxh4; 58. Rxh6, winning. b.3.) 52. …, Kh4; (the acid test of the puzzle) 53. Qe7+, Kh5; (53. …, Rg5; 54. Qxg5 checkmate); 54. Qc5+, Qxc5; 55. bc, Rxf4; 56. Be2+, Kh4; 57. c6, goes for coronation and wins. Amazing! Time to check.>Excellent analysis.
Especially b2..< 55. Bh3, an incredible position: white stop all checkmates,...>. It is an incredible position. Thank you. |
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Oct-13-11
 | | fm avari viraf: Atlast, Viktor victorious with his crafty tactical blows in this spectacular game to knock down the youngest GM Negi! |
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Oct-13-11
 | | morfishine: <jackalope> Glad to help, sometimes these can get tricky |
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Oct-13-11
 | | Gypsy: <51. Qf6+>
<...b) 51. �, Kh5; 52. Qxf7+,> <... 52. �, g6; 53. Qd5+, Rg5 ....> <... 54. Qd1+, Rg4 ...; 55. Bh3, an incredible position: white stop all checkmates, there's only 55. �, Qxf4; 56. Qxg4+,Qxg4; 57. Bxh4+,Kxh4; 58. Rxh6, winning.> 54.Qxg5# |
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| Oct-13-11 | | stst: getting late, can only go for a perpetual:
51.Qf6+ Kh5 (others fail)
52.Qxf7+ Kh4
53.Qf6+ and repeats...
Bed time for another early morning... |
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| Oct-13-11 | | stst: yeah, too tired to go far enough, later Qc5 force exchange of Q and get a pass P! |
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| Oct-13-11 | | TheBish: V Laznicka vs Negi, 2011 White to play (51.?) "Medium", White is up a bishop.
Black threatens mate on the spot (three different ways), so White needs to figure out how to put the extra piece to good use. As usual, it needs to be a forcing move, definitely a check. One thing I noticed was 51. Qf6+ gxf6 52. Rxh6#, so this will be my only candidate move unless this doesn't work. Hmmm.... It's still to be determined if White can win or only draw. This is a little tough to do in your head, but I think I have it. Eureka! It's a sequence of moves that forces a trade of queens or mates. 51. Qf6+! Kh5
Not 51...gxf6 52. Rxh6# (as stated above), or 51...g5 52. R(Q)xh6# or 51...Rg5 52. Qxg5# (h6 pawn is pinned). 52. Qxf7+
Now Black has two ways to go:
(A) 52...Rg6 53. Qf5+ Kh4 (or 53...Rg5 54. Qxg5#) 54. Qh3#. This variation took awhile to see, clearing the rook from g4 to mate on h3. (B) 52...Kh4 53. Qe7+! Kh5 54. Qc5+! Qxc5 55. bxc5 Rxf4 56. Be2+! and the extra piece and passed pawn will win. Whew! That one was tough to work out from the diagram, but good to stretch the ol' gray "muscles". |
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| Oct-14-11 | | LIFE Master AJ: One of my former chess students in Mobile (AL) let me know a couple of things today: #1.) The end of this game is not that simple. (agreed) #2.) It wasn't clear to him why Black resigned. (see note - below) [ 53.Qe7+ Kh5; Looks forced.
(</= 53...g5?; 54.Rxh6#.)
54.Qc5+ Qxc5; 55.bxc5 Rxf4; 56.Be2+ Kg6; 57.c6,  ] |
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