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Later Kibitzing> |
| Mar-23-20 | | landshark: After a day of mostly losses at blitz I went for b6, not taking enough time to look at the <entire> board, missing ... Rh1+ which admittedly is desperate and doesn't salvage Black's game. However.... an inferior line is - inferior. No meal for this shark today - |
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| Mar-23-20 | | boringplayer: I got this one. TY Monday! |
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| Mar-23-20 | | stacase: This was not yer basic Monday puzzle. At every turn there were several ways to say check and not all of them worked. In the end the obvious moves were the correct ones, but you had to check it out all the way to mate. The continuation of 64...Ka8 is forced allowing the White Queen to say check 65.Qa5+. At this point, you have to notice that she covers a7 and c7 forcing Black's King to move 65...b8 Where White's Rook, not the Queen, says 66.e7# |
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Mar-23-20
 | | al wazir: I saw the win of the piece with 63. Rxb8+ Kxb8 64. Qg8+, and said to myself, "There must be something more elegant." So my move was 63. b6.
A) 63...Qxc8 64. Qa5+ Ba7 65. Qxa7#.
B) 63...Qb4 64. Rxb8+ Kxb8 65. Qd8#.
C) 63...Qc3 64. Rxb8+ Kxb8 65. Re8+ Qc8
66. Qd6+ Ka8 67. Rxc8#.
D) 63. b6 Rh1+ 64. Qxh1 Qxf8 65. Qd5 Qb4 66. Re8 Qc3 67. Rc8, and now proceed as in A) or B). |
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| Mar-23-20 | | Walter Glattke: 63.Ree8 Qc1(a1)+ 64.Re1 65.Qc3! In the match, then 64.-Ka7 65.Qa5+ Kb8 66.Re8# D2) 63.b6 Rh1+ 64.Qxh1 Qe3+ 65.Kg2 Qd5+ 66.f3!? (others possible) Qd2+ 67.Kh3 Qh6+ 68.Kg2 Qxf8 wins, but by decisive material. |
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| Mar-23-20 | | saturn2: If 63. Rxb8+ Ka7 it is a rook more but
I did not see an imnediate mate
64. Rbe8 Rh1+ 65. Ke2 Qb2+ 66. Qd |
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Mar-23-20
 | | scormus: It's easy if you're just looking for a clear win, 63 Rxb8 does the job. But it is more interesting to go on and try to find a direct mate after ... Ka7, or by choosing 63 b6 instead. |
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Mar-23-20
 | | Morten: 63.-, Ka7. 64. Qd4+ and either 64.-, b6. 65. Qxb6++ or 64.-, Kxb8. 65. Qd8+ transposing to the game? But white kept the mouse alive to play with it for too long. |
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Mar-23-20
 | | agb2002: White has a rook for a bishop.
Black threatens Qf8.
White forces mate with 63.Rxb8+:
A) 63... Kxb8 64.Qd8+ Ka7 65.Qa5+ Kb8 66.Re8#.
B) 63... Ka7 64.Qd4+ Kxb8 (64... b6 65.Qxb6#; 64... Qc5 65.Qxc5+ Kxb8 66.Re8#) 65.Qd8+ transposes to A. |
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Mar-23-20
| | ajk68: I saw the whole line to mate but I thought there must have something quicker I was missing - it being a Monday puzzle |
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| Mar-23-20 | | Walter Glattke: 63.-Ka7 64.b6+ Ka6 65.Ra8+ Kxb6 66.Rb1+ Qb3 decisive material, but no immendiate mate so far. |
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| Mar-23-20 | | Damenlaeuferbauer: After long pondering, the great Russian chess player Evgeni Vasiukov finally found the mate in 4 moves with 63.Rxb8+!,Kxb8 64.Qd8+,Ka7 65.Qa5+,Kb8 66.Re8#. His best game was, in my opinion, against Loek van Wely at the Aeroflot Open 2002 in Moscow, which was awarded for the prize for the best half-year game by the Belgrade/Serbian Informator. As far as I know, in the 1970s and 1980s Shenya worked for Tolya Karpov. |
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| Mar-23-20 | | zb2cr: Once I discarded the idea of using an immediate Pawn push to b6, I found the forced mate. (A) Main line, Black accepts the sacrifice: 63. Rb8+, Kxb8; 64. Qd8+, Ka7; 65. Qa5+, Kb8; 66. Re8#. (B) Black declines the sacrifice: 63. Rxb8+, Ka7; 64. Qd4+. Now Black has
three choices.
(B.1) 64. ... b6: 65. Qxb6#.
(B.2) 64. ... Qc5; 65. Qxc5+, Kxb8; 66. Re8#. (B.3) 64. ... Kxb8; 65. Qd8+ transposes to line A. |
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| Mar-23-20 | | lajube: How did Bronstein miss this? |
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| Mar-23-20 | | TheaN: White mates after <63.Rxb8+>. The 'easy' line is 63....Kxb8 64.Qd8+ Ka7 65.Qa5+ Kb8 66.Re8#. After 63....Ka7 I went slightly suboptimal with 64.Ra8+ #4 (Qd4+ #3); now Kxa8 is 'best' with the same pattern, 64....Kb6 65.Re6+ Qd6 66.Rxd6+ Kc7 67.b6#. |
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| Mar-23-20 | | stacase: <zb2cr: Once I discarded the idea of using an immediate Pawn push to b6,> Yeah, I kept looking at that, but in the final analysis, all the moves had to say check, otherwise Black was going to unleash the hounds of hell. |
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Mar-23-20
 | | chrisowen: Mob handed absolutely! |
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Mar-23-20
| | chrisowen: Lord knows wash off? |
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Mar-23-20
 | | Breunor: I started with b6 but I thought it was too open; I found the mate in 3 but it took me a few minutes. |
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| Mar-23-20 | | Olsonist: I prefer b6 but I grant the game played is a series of forced checks ending mate. |
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Mar-23-20
 | | fm avari viraf: The sweet memories of playing with GM Vasiukov & GM Bronstein still linger in my mind. Both are just wonderful human beings. |
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| Mar-23-20 | | RandomVisitor: After 18.c3 the game is likely even.
click for larger viewStockfish_20032021_x64_modern:
<41/49 04:00 0.00 18...h5 19.0-0 f5> 20.Rfd1 h4 21.Bf1 Kf8 22.d4 Rd8 23.h3 Kg7 24.b5 Qc7 25.c4 Rd7 26.d5 cxd5 27.cxd5 Rhd8 28.dxe6 Rxd1 29.Rxd1 Rxd1 30.Qxd1 fxe6 31.Qxa4 Qe5 32.Qd1 Bxa3 33.Qd7+ Kg6 34.Qe8+ Kg7 |
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| Mar-23-20 | | RandomVisitor: After 5.Nge2 can black get away with playing 5...g6!? Note that after 5...g6 6.Nxe4 Nxe4! 7.Bxh8 f6 there are complications and a likely trapped white bishop. The computer wisely sidesteps this line:
click for larger viewStockfish_20032021_x64_modern:
<53/83 1:56:10 -0.69 5...g6 6.Ng3 Bg7 7.Ncxe4 0-0> 8.Qc1 h5 9.h4 Nbd7 10.Be2 Nxe4 11.Nxe4 Nf6 12.Ng5 Re8 13.0-0 e5 14.d3 Nd5 15.g3 Bh6 16.c4 Nc7 17.Qc3 Bf5 18.Rad1 f6 19.Ne4 Ne6 20.Qb4 Rb8 21.Kh2 a5 22.Qd6 Bxe4 23.dxe4 Qxd6 24.Rxd6 Bf8 25.Rdd1 Rbd8 26.f4 Rxd1 27.Rxd1 exf4 28.Bxf6 Nc5 29.Rd8 fxg3+ 30.Kh3 Rxd8 31.Bxd8 Ne6 32.Bg5 Kf7 33.Kxg3 Bd6+ 34.Kf2 Nxg5 35.hxg5 Be7 36.Bf3 Bxg5 |
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| Mar-23-20 | | TheaN: <RV: 5....g6!?> actually, the line is not that subtle at all and it's typical it has not been played yet. After 5....g6 Black forcefully fianciettos with a great position, or wins two pieces for the rook after 6.Nxe4 Nxe4 7.Bxh8 f6 essentially followed by 8....Nd6 and 9....Nf7 or Kf7. The only slight salvage seems to attack the knight and then open the h-file: 8.Ng3 (mind that immediately 8.h4? Bh6 -+ and an instant knockout, as there's nothing against Bxd2+) Nd6 9.h4!?: if White <doesn't> threaten the h-push, Black can pick up the bishop with the king, ie 9.Bd3 Kf7 ∓. After 9.h4 Nf7 (Kf7? now is a disaster 10.h5 with hxg6 +-) 10.h5 Nxh8 11.hxg6 Nxg6 12.Rxh7 ⩱ apparently (SF10 is not conclusive), looks extremely weird:
click for larger view |
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| Mar-24-20 | | RandomVisitor: <TheaN>Interesting. I have this at the critical position after 5...g6 6.Nxe4 Nxe4! 7.Bxh8 f6, where try as hard as he can white cannot rescue the trapped piece, and in each case below must exchange it for the lowly f-pawn: 
click for larger viewStockfish_20032021_x64_modern:
60/91 18:28:14 -1.51 8.Ng3 Qd4 9.Nxe4 Qxe4+ 10.Qe2 Qxe2+ 11.Bxe2 Kf7 12.Bc4+ Be6 13.Bxe6+ Kxe6 14.0-0-0 Nd7 15.Rde1+ Kf7 16.Re3 Kg8 17.<Bxf6 exf6> 18.Rhe1 Kf7 19.Rd3 Nc5 20.Rd4 Re8 21.Rxe8 Kxe8 22.Rh4 h6 23.b4 Ne6 24.c3 Kf7 25.a4 f5 26.b5 c5 27.Rc4 Kf6 28.Kc2 Bd6 29.g3 Ke5 30.a5 a6 31.bxa6 bxa6 32.d3 g5 33.h3 Bc7 34.Ra4 Kd6 35.Ra1 f4 36.Re1 Kd5 37.gxf4 gxf4 38.Ra1 Bd8 39.Re1 Kd6 40.Ra1 f3 41.Re1 60/83 18:28:14 -1.59 8.g3 Qb6 9.d4 Qa5+ 10.c3 Bg4 11.Qd3 Nd6 12.Qe3 Kf7 13.h3 Bd7 14.Bg2 Na6 15.0-0 Kg8 16.<Bxf6 exf6> 17.Rfe1 Nc7 18.c4 Nf5 19.Qd3 Be6 20.Red1 Rd8 21.a3 Bf7 22.b4 Qb6 23.Rac1 Bh6 24.Rc3 Rd7 25.d5 cxd5 26.Rc2 Qd6 27.cxd5 Bf8 28.Qc4 a6 29.h4 Nb5 30.Qb3 Bh6 31.Qf3 Ne7 32.Nc3 Nxc3 33.Qxc3 Bf8 34.Qb2 Bg7 35.Qc1 f5 36.Qe3 Bf6 37.Qc5 Bxd5 38.Bxd5+ Nxd5 39.Qxd6 Rxd6 59/86 18:28:14 -1.96 8.Nc3 Nd6 9.Qf3 Bh6 10.0-0-0 Kf7 11.<Bxf6 exf6> 12.h4 Nd7 13.h5 Ne5 14.Qe2 Kg7 15.f3 b5 16.Kb1 Nf5 17.Qe1 a5 18.hxg6 hxg6 19.d4 Nf7 20.Bd3 a4 21.Bxf5 Bxf5 22.g4 Bc8 23.d5 axb3 24.cxb3 Qd6 25.Qf2 Qb4 26.Qd4 Qxd4 27.Rxd4 c5 28.Rdd1 Bd7 29.Ne4 Rc8 30.d6 Bf4 31.Rd5 Be3 32.Re1 Bd4 33.Rc1 Be6 34.Rdxc5 Bxc5 35.Nxc5 Bd5 36.d7 Rc6 37.Ne4 Rxc1+ 38.Kxc1 Bc6 39.Nc5 Bxf3 40.Ne6+ Kh6 41.d8Q Nxd8 42.Nxd8 Kg5 43.a4 bxa4 44.bxa4 Kxg4 |
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Later Kibitzing> |
Kibitzing
sac: 63.Rxb8+