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Later Kibitzing > |
Jul-25-08
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| arsen387: <then Qxe3 followed by Rxf3 would still leave him winning.> I wouldn't be so sure about that. Of course black is better but whites still can fight for a draw. |
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| Jul-25-08 |
| Alphastar: <arsen387> I suppose ..h6? is a pretty bad move there. ..b6 would definitely be better and should make the win a trivial matter. Still, Nxc4 is considerably easier to find than the earlier combination. |
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| Jul-25-08 |
| Jim Bartle: "We didn't see 25...Rff8! after 25. Kg5."
Don't feel bad. Nunn himself admits he missed 25...Rff8, which was a move slower than his variation of 25...h6. |
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Jul-25-08
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| KokeFischer: Would you publish the game here?
Or send it to jorgegatica@yahoo.com please?
Lutwidge: This type of sacrifice always reminds me of the "immortal one minute game" that GM Roland Schmaltz (aka, Hawkeye on ICC) played vs GM Ronen Har-Zvi ("Indiana Jones"). Anyone remember that game? |
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Jul-25-08
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| SuperPatzer77: I like Lost-In-Space's analysis of 24 Kxh4 better after 23...Qh4+!!. One of White's tries is 24. Kxh4 below:
24...f4!,
25. Kg5 (White avoids being mated with Bf6#) Rff8! (Much better than any moves - It allows the light-squared Black bishop to take control of the e8-h5 diagonal), 26. Rg1 h6+,
27. Kxg6 Be8# 0-1. See that it is just 4 moves in mate. That's why I like Lost-In-Space's excellent and simple analysis of 24. Kxh4. Well, isn't it a piece of cake, folks? We didn't see 25...Rff8! after 25. Kg5. Kudos to Lost-In-Space
SuperPatzer77 |
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| Jul-25-08 |
| littlefermat: Wow. Very nice puzzle. I didn't get it, but it was still instructive. |
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| Jul-25-08 |
| nycbon: Could someone explain the resign after 27 ... NxC4?
I can't see the imminent mate (although white is in bad shape). After 28 QG2, white still seems to have some life. What am I missing? Thanks |
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| Jul-25-08 |
| nycbon: (Demonstrating that I am not good enough to know when I have lost I suppose) |
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Jul-25-08
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| chrisowen: Bowling chopper, that's more like it. He's spent enough time dodging bullets to be shopping around. |
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Jul-25-08
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| euripides: <nyc> A gap of two pawns is usually enough to provoke resignation at the grandmaster level if there's no compensation. Here Black will be the exchange (rook for knight or bishop) and three pawns up, with active pieces and no weaknesses. Also, <28.Qg2> e4 is unpleasant. |
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Jul-25-08
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| Marmot PFL: After looking for about 30 seconds Nxg3 seems to be the move - Kxg3 and now Qh4+! Kxh4 (Kh2 Qxe1 is easy) f4 and now Bf6 will mate. A very easy Friday unless I am overlooking something...There was a similar combination by Kotov (i think) in Zurich '53 that was much more complex |
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Jul-25-08
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| Marmot PFL: Here is that game Averbakh vs Kotov, 1953
as was already noted by Kangaroo in an older message. Bronstein points out some faster wins for Kotov too. |
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Jul-25-08
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| kevin86: Isn't it ironic that the first capture of the game would be the solution-and that it would be a sacrifice to set up a second sacrifice? |
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Jul-25-08
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| Marmot PFL: Objectively white should decline the first sacrifice and play something like b4 or exf5 Nxf5 Ne4, and hope Nunn makes a mistake later on. Though I would not blame him much for resigning either. |
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Jul-25-08
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| YouRang: Got it! I usually start by considering attacks on the king position (because that's usually the root of these tactics). In this case, there wasn't much to do except try to lure the king into danger (or at least win a pawn) with 22...Nxg3. (I also considered 22...f4, but I didn't see much happening after 23.g4). But is there adequate compensation for the knight? If 23.Kxg3, it seems that we can now REALLY bring out into the open with 23...Qh4+!, which skewers the rook on e1. But is there adequate compensation for the knight AND queen (i.e. a mating attack)? If 24.Kxh4, then the first order of business is to not allow the king to retreat to his hole, so 24...f4, which cuts off g3 and threatens 25...Bf6# -- so white must prevent this with 25.Kg5. The white king is really on his own here with black bishops and pawns and a rook swarming, so the attack *looks* promising. But one must be *sure*, so this is where it gets a little tricky. There are probably different ways to create mate (thanks to the fact that white's pieces are so helpless, that I have loads of time to set up a mating net). The line I found was:
25...h6+
26.Kxg5 (forced) Rf5!
That's a <very nice clearance sac> (if I say so myself) to open the e8-h5 diagonal. The rook cannot be taken since 27.exf6 allows ...Be8#. The immediate threat is 27...Rg5# 27.h4 (preventing ...Rg5#) Rcf1! (preventing Kxf5), and now nothing stops ...Be8#. Very good puzzle! You must really be sure of yourself before dropping a knight and queen. |
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| Jul-25-08 |
| MiCrooks: The theme this week seems to be play the move you'd like to play...it'll work :)! Still, this is a bit more difficult that previos days as it should be. Still, after playing Nxg3 (the move I want to play exposing the King to attack) it is not too hard to find the response to Kxg3. Qh4! is crushing as Kxh4 f4! traps the Kind in a mating net. Bf6++ is threatened so Kg5 is the only try. Here there are many ways home, but the one I found was h6+ Kxg6 Be8 which threatens Rf6++ or Rf8++. If the King tries to run back Kh5 then Rf5+ mates in a few. Kg4 Rg5+ Kh4 Rxg2 and mate next. I see there is a quicker mate with Rf5 instead of Be8 since exf5 blocks the escape square allowing Be8++, but any quick mate is enough to justify the combination. The position after losing the exchange and pawn is not worth much discussion. |
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| Jul-25-08 |
| ruzon: I saw Nxg3 and Qh4+, I just stuck f4+ in the middle: 22...Nxg3 23.Kxg3 f4+ 24.Kf2 Qh4+ 25.Ke2 Qg3 26.Rg1 Bxh3 27.Kf1 and I'm not even sure Black has an advantage anymore. |
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Jul-25-08
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| Zkid: A funny point to notice is that after Kxg3 Qh4 Kxh4 f4 Kg5 Black's positional advantage is so great, that despite being down a queen and knight, 23 of his 32 moves lead to forced mate in eight or less, and seven (the seven moves that sacrifice his light squared bishop are draws, because it is insufficient to mate afterward, but still perpetual after Bf6+ because of Kg4? h5#) of the remaining nine are draws by perpetual (the only losing moves are Bh6 and Rf5). Quite a magnificient position. I saw the sack, but failed to see Rff8! as best (I did Be8, which is still forced mate, though slightly more difficult). |
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Jul-25-08
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| SuperPatzer77: Well-done, <YouRang>!! You made two typos, uuuugh! I know your analysis of 24. Kxh4 is excellent and simple with a beautiful rook sacrifice. 24. Kxh4 f4!, 25. Kg5 (To avoid being mated with ...Bf6#) h6+, 26. Kxg6 Rf5! (If 27. exf5 [your typo is exf6] then 27...Be8#), 27. h4 (it prevents ...Rg5#) Rcf8! (Your typo is Rfc1!). Thus, White has no defense against Be8#. Kudos to <YouRang> and <Lost-In-Space>! <YouRang>, just read Lost-In-Space's commentary - 24. Kxh4 f4!, 25. Kg5 Rff8!  . It leads to 4 moves in mate. SuperPatzer77 |
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Jul-25-08
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| YouRang: <SuperPatzer77> Thanks, and sorry for the typos. :-p BTW, you had one too (interestingly, a typo of my typo -- recursive typos?): <(Your typo is Rfc1!). > You meant: <Rcf1>, and you're right, I meant <Rcf8>. :-) |
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| Jul-25-08 |
| zb2cr: Argh. Missed the Queen sacrifice. |
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Jul-25-08
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| Jimfromprovidence: The preventative move was the simple 22 exf5, I suppose.
click for larger viewNow, if 22...Nxg3, then 23 fxg6 Rf4 24 gxh7+ Kh8 and black's attack has
fizzled.
click for larger view |
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Jul-25-08
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| TheaN: 5/5
I'll be honest, I was actually thinking White could not escape the mate on h4 with Bf6‡. However, the King is SO isolated from its pieces, that much plans to mate the White King work. -ML-
<22....Nxg3!> It's useless diverting with no acception of the sac, although it's White's best try. The Queen will enter at h4, and White has a hard, if at all, time to prevent a mate with the Knight still on the board. <23.Kxg3 Qh4†!!> Be-au-ti-fuuul. I've seen many Queen sacs but this one strikes as a hot knife through butter, isolating the King upon capture. That's not White best try, but neither is Kh2. /A\
<24.Kxh4 f4> Baited, caught, and now the bringing in can begin. <25.Kg5> Otherwise mate with Bf6. I actually missed this and thought it was unstoppable, but now the White King gets more and more into the position of Black, without any help from ANY piece: I would've finished this OTB. <25....Bf8> It's obvious once you see the King can only escape via g5 and h6. Trying h6† or something can make things very hard for Black. SuperPatzer, on the other hand, shows that 25....Rff8! provides a more effective mating net, but meh; this is obvious and works. <26.Nb4 Kg7 27.Nc6 Nxc6 28.dxc6 Be7‡> 0-1 /B\
<24.Kh2 Qxe1> And any subsequent analysis is unneeded. The combination played by Nunn is nice, ending with Nxc4, but Black can simply retreat the Queen to h4 on any occasion, being a pawn and exchange up... clear enough. |
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Jul-25-08
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| johnlspouge: Friday (Difficult): Black to play and win.
Material: Even. Black has K-side counterplay, particularly against the dark squares, because of Nh5. The White Kh2 is lightly defended. The sacrifice 22…Nxg3 would draw Kh2 out and might be feasible, because attack might be reinforced faster than defense, and because Qd8, Pf5, Bd7, or Rf7 are readily available. The general pattern of attack might include entry of Qd8 with check, opening of the f-file for Rf7 with …fxe4 or clamping the K-side with …f4, and capture of Ph3 by Bd7 supported by the Black Q. Notably, Re1 is undefended, yielding a tempo after …Qh4. Candidates (22…): Nxg3
22…Nxg3 23.Kxg3 [else, lose a P]
Candidates (23…): Qg5+, Bh6, f4+
I omit my indecisive brief analysis of the candidates above, because I missed the shot 23…Qh4+. |
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| Jul-25-08 |
| Madman99X: It seems that Hsu was in his teens when he played this match. (According to CG.com, he played in under 20 events in 1993, a year after this was played.) |
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Later Kibitzing > |
sac: 22...Nxg3