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< Earlier Kibitzing · PAGE 2 OF 2 ·
Later Kibitzing> |
| Dec-28-16 | | stacase: Black has to say check or defend against the mate at Qh8# and so 34...Rh3+ gets the nod. White can get out of check by moving or capture Black's Rook. The Rook capture merely prolongs the agony. This was a lot more fun than yesterday's fiasco (-: |
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| Dec-28-16 | | Mayankk: E file is blocked for white king. If the black queen can somehow give a check to white king, then it can maybe push white king to g4 where the h3 pawn can join the action to give a mate. All this suggests Rh3+. Should white accept then black queen swings into action from h8. Else the black rook can force white king to g4 and mate. |
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Dec-28-16
 | | radtop: If 35.KF4 Rh4+ 36.g4 Now Nxd4 doesn't work as it leaves the rook hanging. |
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| Dec-28-16 | | CliftonJ: <if White declines Rook sacrifice and plays 35 Kf4 Rh4+ , followed by 36...Qh1.>
Be careful: 35 Kf4 Rh4+ 36 Kf3 Qh1 37 Qh8++ |
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| Dec-28-16 | | newzild: The key line is:
34...Rxh3+
35. Kf4
(not 35. gxh3 Qh1+ followed by 36...Qe4+ and 37...Qh4#, while 35...Kg4 Re4+ 36. Kg5 Rh5 is also mate) ...and now one possibility is 35...Qc7+. If 36. Kg4, then Rh4+ forces White to give up queen for rook and knight to avoid mate, while 36. Be5 Rxe5 37. Qxe5 (otherwise a discovered check wins) Rh4+ 38. g4 Rxg4+ wins material. <dick50>
Your idea of 36...Qh1 runs into 37. Qh8# |
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| Dec-28-16 | | diagonalley: nice example of snaring an exposed king! |
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| Dec-28-16 | | YouRang: Wednesday 34...?
click for larger view
White threatens Qh8#, but it's black's turn and black has the white king is surrounded by a N, Q, 2R plus nearby pawns. All black needs is a breakthrough attack that keeps white in check. The only such move that makes sense is <34...Rxh3+! 35.gxh3>
click for larger view
We've traded our least active rook for a gaping hole in white's defense, which now gives our queen entrance via <35...Qh1+>
click for larger view
White has just two moves (f4 and g4), but between the threats of Qg2+, Re4+, and h6#, white will be mated shortly. ~~~~
White's stiffest defense is actually to decline the rook with <35.Kf4>
click for larger view
We can keep white in check with <35...Rh4+>
click for larger view
- 36.g4 Rxg4+ (force white to take the R!) 37.Kxh4 Re4+ 38.f4 (Kf3 or Kh3 met by Qh1#) Nxd4 (remove mate threat) 39.Rxd4 and now the rook can control the 3rd rank while the Q can threaten mate from h5. - 36.Kf3 Rxd3 (remove mate threat) 37.Rxd4 Qe1 building Q+R battery on e-file which should be winning with help of Nf5. If nothing else, black pawn advantage should be decisive. |
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Dec-28-16
 | | scormus: what's with all these RxKR3+'s these days? In the current rapid play, David Howell had a chance of # combo with Rxh6+. Unfortunately he missed it as he found an alternative quicker # |
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| Dec-28-16 | | morfishine: <34...Rxh3+> is both a demolition sacrifice against the White pawn structure and a clearance sacrifice freeing up <h1> for the Black Queen Nice
***** |
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| Dec-28-16 | | AlicesKnight: White threatens mate on h8, so find the check. I was right - ...Rxh3+ is the key, and a white capture allows the Q to H1 with check, the intrusion of the other Black R and possible mate by h6. If Black refuses the R offer with 35.Kg4 then ....Rh4+, and after Kf3 or g4 I cannot see an immediate mate but Black can force exchanges and 2 pawns should be a winning margin. |
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| Dec-28-16 | | vermapulak: if I am not missing anything….36.Qe4 could work faster |
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| Dec-28-16 | | Muttley101: <dick50: Easier than Monday! 34 ...Rh3
35 gxh3 Qh1+, 36 Kf4 (or Kg4) Qe4+, 37 Kg5 Qh4++ if White declines Rook sacrifice and plays 35 Kf4 Rh4+ , followed by 36...Qh1. Two major pieces on h file with help of Knight should finish White King. Rook on e8 prevents escape to other side of Board> Always consider your opponent's threats- Qh8# spoils black's fun I'm afraid, so black has to either have a forcing line to mate, or a line to exchange off on d4 advantageously. |
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| Dec-28-16 | | mel gibson: White can't take the rook.
The computer says this:
(34. .. Rxh3+ (♖h1xh3+ ♔f3-f4
♖h3-h4+ ♔f4-f3 ♖h4xd4 ♖d3xd4 ♕c1-c3+ ♔f3-f4 h7-h6 ♖d4-d6 ♕c3-c4+ ♖d6-d4
♕c4-c7+ ♔f4-g4 ♘f5xd4 ♖d2xd4 ♕c7-c3 f2-f3 ♕c3-b2 ♔g4-g3 ♕b2xa2 ♕f6-f4
♖e8-e2 ♖d4-d8+ ♔g8-h7 ♕f4-b8 g6-g5 ♖d8-h8+ ♔h7-g6 ♕b8-g8+ ♔g6-h5) +2.96/18
128)
Score +2.98 depth 18 |
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| Dec-28-16 | | gofer: Okay, White threatens Qh8#, but we can quickly discount a few defences... a) The only king move stopping mate loses quickly. 34 ... Kf8 35 Qh8+ Ke7 36 Bf6+ Ke6 37 Re2+ 
b) The other defensive moves seem to do not very much beyond stopping the mate. 34 ... Nxd4+ 35 Rxd4 ...
34 ... Qc6+ 35 Qxc6 bxc6...
c) So we need to find something more and it still has to be a check. Re6+/Qd1+ seem to be a bad ideas. The only other choice is the one we must look at... <34 ... Rxh3+>
35 gxh3 Qh1+ 36 Kf4/Kg4 Qe4+ 37 Kg5 Qh5#/h6#
35 g6 Qh1+ 36 Kf4/Kg4 Re4+ 37 Kg5 Qh6#/Qh5#/h6#
35 Kg4 Re4+!
36 f4 Rxd4! (36 Kg5 h6# or 36 Kxh3 Qh1#)
37 gxh3 h5+! (38 Rxd4 Rg3# or 37 Kxh3 Qh1+ 38 Kg4 Qh5#)
38 Kf3 Qf1+
39 Rf2 Qxd3+
40 Kg2 Qg3+ mating
<35 Kf4 ...>
At this pointed I was really tempted by <35 ... Qc7+>... 36 Kg4 Rh4+
37 Qxh4 Re4+ (Kg5/Kf3 Qf4#)
38 Kf3 Rxh4 
36 Kg5 Rh5+
37 Kg4 Re4+
38 f4/Kf3 Qxf4#/Qf4#
<36 Be5 Rh4+>
<37 g4 Rxg4+>
<38 Kxg4 Qxe5>
<39 Qxe5 Rxe5>
click for larger viewBlack is an exchange down, but three pawns up. But analysis provided by <Mel Gibson> looks to be compelling... ...pity! |
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Dec-28-16
 | | Once: Well, yes, I suppose. If I must. I've got a bad feeling about this. It's one of those disappointing puzzles where you have to settle for second best but it's better than nothing. The exciting line is 34...Rxh3+ 35. gh? Qh1+
click for larger viewThe black queen arrives on stage like Darth Vader force-choking rebel soldiers on the Tantive IV. White survives a little longer with 36. Kg4 than 36. Qf4, but either way the rebel alliance is crushed. But things are not so clear if white declines the rook. After 34...Rxh3+ 35. Kf4 Rh4+ 36. Kf3 
click for larger viewWhite runs away to hide the stolen plans in an R2 unit. There is no way for black to continue his storm trooper onslaught, and we still have the death ray pointed at Alderaan threatening Qh8#. Black has nothing better than exchanging either rook or knight for the Bd4. He will emerge two pawns up. Black will have a small plus, but it's more of Jar Jar Binks dimensions than a full-blown explosion. It isn't quite blowing up the deathstar, but it is worth getting into a gold bikini for. If they've got one in my size. |
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Dec-28-16
 | | varishnakov: 34...RxP+
35.PxR Q-R8+
36.K-N4 or 36.K-B4 there is 36...Q-K5+ 37.K-N5 Q-R5 mateso what if white does not take the rook?
35.K-N4 R-K5+ ------
36.KxR Q-R8 mate
36.K-N5 R-R4 mate
35.K-B4 -------
enticing is 35...RxR winning a rook but 36.Q-R8 is mate so we don't have the luxury of non-forcing moves 35...R-R5+ ----
36.K-N5 P-R3 mate
36.K-B3 and I don't see a way forward
35...Q-B2+ ----
36.B-K5 RxB 37.QxR R-R5+ 38.K-B3 QxQ and that's the best I can come up with ---
turns out I missed 38.P-N4 blocking the check, but rook can take the pawn and it amounts to the same thing, albeit with less material down |
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Dec-28-16
 | | kevin86: Black runs down white's king from behind. |
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| Dec-28-16 | | devere: <radtop: If 35.KF4 Rh4+ 36.g4 Now Nxd4 doesn't work as it leaves the rook hanging.> If 34...Rxh3+ 35.Kf4 Rh4+ 36.g4 Nxd4 37.Qxh4 Qc7+ forces checkmate
click for larger view |
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Dec-28-16
 | | agb2002: Black has a knight and a pawn for a bishop.
White threatens Qh8#.
Black can resume the attack with 34... Rxh3+:
A) 35.gxh3 Qh1+
A.1) 36.Kf4 Qe4+ 37.Kg5 Qh4# (or h6#).
A.2) 36.Kg4 Qg2+ (36... Re4+ 37.f4 and neither Qg1+ nor Qg2+ are feasible) 37.Rg3 (37.Kf4 Re4#) 37... Re4+ 38.Kg5 (38.f4 Qxg3#) 38... h6#. B) 35.g3 Qh1+
B.1) 36.Kf4 Q(R)e4+ 37.Kg5 Rh5# (or h6#).
B.2) 36.Kg4 Rh4+
B.2.a) 37.gxh4 Qg2+ as in A.2.
B.2.b) 37.Qxh4 Nxh4 38.gxh4 Qg2+ 39.Rg3 (39.Kf4 Re4#) 39... Re4+ 40.Kg5 (40.f4 Qxd2, etc.) 40... Qh2 41.Rg4 (due to Qxh4#) 41... h6+ 42.Kxh6 (42.Kf6 Re6#) 42... Rxg4 43.Bf6 (threatens Rd8+ and mate next) 43... Rxh4+ 44.Bxh4 (44.Kg5 Qf4#) 44... Qxh4#. B.2.c) 36.Kg5 h6#.
C) 35.Kf4 Rh4+
C.1) 36.Kf3 Rxd4 37.Rxd4 Nxd4+ - + [2P].
C.2) 36.g4 Nxd4 (36... Rxg4+ 37.Kxg4 Qg1+ 38.Kf4 Qh2+ 39.Rg3 + -) C.2.a) 37.Qxh4 Qc7+ 38.Kg5 Qe7+ and mate next.
C.2.b) 37.Rxd4 Rh2 (threatens Rxf2+) 38.Kf3 (38.f3 Rxd2 wins) 38... Qh1+ and mate in two. C.2.c) 37.Qxd4 h5 - + [2P].
D) 35.Kg4 Rh4+ 36.Kf3 Rxd4 as in C.1. |
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| Dec-28-16 | | YouRang: <Once: Well, yes, I suppose. If I must. I've got a bad feeling about this. It's one of those disappointing puzzles where you have to settle for second best but it's better than nothing.> I suppose that it may be disappointing in the sense that it's not a quick mate with best play, but then again, many great moves aren't quick mate. With <34...Rxh3!>, black makes a flashy move that gives white a great opportunity to eat a poisoned rook. Even if not eaten, black has initiated an attack that wins material, it can squelch white's own mating attack, and ultimately lead to a winning endgame. If only all disappointments were so pleasant! ;-) |
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Dec-28-16
 | | ChessHigherCat: It's almost a spoiler the way it encourages you to play Rxh3+ right away, counting on the helpmate gxh3, but it's a lot more challenging if the K declines (baby no eat), as Phony Benoni pointed out. It still eventually leads to an advantage though, as you guys laboriously demonstrated. |
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Dec-28-16
 | | gawain: Nice combination. I saw enough of it (including the variant in which White declines the rook) to count the puzzle as solved. White's vulnerability, especially at e4, is striking |
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| Dec-28-16 | | unferth: <YouRang:
White's stiffest defense is actually to decline the rook with <35.Kf4> We can keep white in check with <35...Rh4+> - 36.g4 Rxg4+ (force white to take the R!) 37.Kxh4 Re4+ 38.f4 (Kf3 or Kh3 met by Qh1#) Nxd4 (remove mate threat) 39.Rxd4 and now the rook can control the 3rd rank while the Q can threaten mate from h5. - 36.Kf3 Rxd3 (remove mate threat) 37.Rxd4 Qe1 building Q+R battery on e-file which should be winning with help of Nf5. If nothing else, black pawn advantage should be decisive.> I think interpolating 35 ... Qc7+ before Rh4+ is stronger--36 Be5 (Kg5 Qf4++) Rh4+ followed by Qxe5 picks up a piece, and white is forced to trade queens to avoid mate. |
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| Dec-28-16 | | YouRang: <unferth> Regarding the <34...Rxh3 35.Kf4> line,
click for larger view
<I think interpolating 35 ... Qc7+ before Rh4+ is stronger--36 Be5 (Kg5 Qf4++) Rh4+ followed by Qxe5 picks up a piece, and white is forced to trade queens to avoid mate.> After <35...Qc7+ 36.Be5 Rh4+>
click for larger view
Now white has <37.g4!>
click for larger view
Note that 37...Rxe5 can be met by 38.Qd8+! |
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| Dec-28-16 | | unferth: <YouRang> ah, well spotted. thanks! |
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Kibitzing
sac: 34...Rxh3+
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