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< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing > |
Dec-06-08
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| Jimfromprovidence: I found what I thought was a clever line that unfortunately did not work.
21…Qc6 ?! (threatening mate in one)
click for larger view
Then after 22 f3 (not Be4) I followed with 22… Bxg3 (hoping to win material and force a queen trade).
click for larger viewBut this line fails to 23 Qe7+!. Now black is losing after 23…Kg8 24 Rxc6 Bxc6 25 Qe6+ Kh8 26 Qxc6.
click for larger view |
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Dec-06-08
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| al wazir: <Eyal: 24.Bc4+ first> I found that myself after I posted. But thanks once again. |
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Dec-06-08
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| Eyal: <Jimfromprovidence: I found what I thought was a clever line that unfortunately did not work. 21...Qc6 ?! (threatening mate in one) Then after 22 f3 (not Be4) I followed with 22… Bxg3 (hoping to win material and force a queen trade). But this line fails to 23 Qe7+!. Now black is losing after 23…Kg8 24 Rxc6 Bxc6 25 Qe6+ Kh8 26 Qxc6.> Another line worth mentioning after 21...Qc6 22.f3 is 22...Nf6 23.Rxf6+! gxf6 24.Qh5+ Ke7 25.Re1+ Kd7 26.Bb5. |
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| Dec-06-08 |
| spreadsanity: White doesn't end up with as much of an advantage if black plays 21...Ne5 |
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Dec-06-08
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| Once: It was my son's birthday party today. Fourteen boisterous 7 to 8 year olds alternately trying to kill each other, smear pizza over the the church hall floor and see how loud they can scream. Back home, a well-deserved glass of Uisge Beathe and the saturday CG puzzle of the day. But I have to confess that my ears are still ringing, so I haven't got the energy to calculate any further than 20. Nxf7 Kxf7 21. Rxe6. Again we see the limitations of a defensive knight. The Nd7 blocks black's second rank and turns the Qc7 into little more than a tall bishop. I feel a diagram coming on ... We tend to focus on pattern recognition of the squares that a knight can control. But what about the squares that a knight cannot control? Here they are: 
click for larger viewIn most of our recent POTDs we have had attacks slipping past clumsy defensive knights. Great in attack - rubbish in defence. Can't type any more today. I've got a headache. Today experience might convince a lesser man of the virtues of chastity ... |
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Dec-06-08
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| johnlspouge: < <spreadsanity> wrote: White doesn't end up with as much of an advantage if black plays 21...Ne5 > Because I missed 21...Nc5 but analyzed 21...Ne5, I hoped you were right. I miss far too many accurate defenses. Toga thinks 21...Nc5 better than 21...Ne5, however. |
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Dec-06-08
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| wals: Fabiano Caruana - Emanuel Berg, 2008 Olympiad 2008
Analysis by Rybka 3 1-cpu 32-bit: Total time 1 hour 5min 20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+ Kg8 24.Bxe5 Qe7 25.f4 Qf7 26.Qg4 Rac8 27.Qg3 Bd5 28.b3
 (1.15) Depth: 11 00:00:00 0kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+ Kg8 24.Bxe5 Qe7 25.f4 Qf7 26.Qg4 Rac8 27.Qg3 Bd5 28.b3
(1.15) Depth: 12 00:00:00 0kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+ Kg8 24.Bxe5 Qe7 25.f4 Qf7 26.Qg4 Rac8 27.Qg3 Bd5 28.b3
(1.15) Depth: 13 00:00:01 18kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5[] Bxe5 23.Qh5+[] Kg8 24.Bxe5 Qe7 25.f4 Qf7 26.Qg4 Rac8 27.Qg3 Rxd3 28.Qxd3 Qc4 29.Qxc4+
(1.09) Depth: 14 00:01:03 2248kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+[] Kg8 24.Bxe5 Qe7 25.f4 Qe6 26.b3 Rac8 27.Bf5 Qf7 28.Bh7+ Kf8 29.Bg6 Qe7 30.Bd3
(1.10) Depth: 15 00:06:58 15682kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+[] Kg8 24.Bxe5 Qe7 25.f4 Qe6 26.b3 Rac8 27.Bf5 Qf7 28.Bh7+ Kf8 29.Bg6 Qe7 30.Bd3 Qf7 31.Qh3 b5 32.Re1 b4
(1.17) Depth: 16 00:21:00 45467kN
20.Nxf7 Kxf7[] 21.Rxe6[] Ne5 22.Rxe5 Bxe5 23.Qh5+[] Kg8 24.Bxe5 Qe7 25.f4 Qe6 26.b3 Rxd3 27.cxd3 Rc8 28.Qd1 Qg6 29.Qd2 Qc6 30.Qe2 Qd7 31.Kg1 Rc6
(1.16) Depth: 17 00:52:41 120mN
(, 07.12.2008)
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Dec-06-08
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| chrisowen: <Eyal> This is helpful, I wondered about it, you put me straight....lux et veritas. |
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Dec-06-08
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| paulalbert: No, When the R comes back to e1 to defend it's discovered check by the white Q! |
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Dec-06-08
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| paulalbert: Question on Qd1ch disappeared and I notice it had already been answered below anyway. |
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| Dec-06-08 |
| THE pawn: Whoever found this is a monster. I personally knew the key moves as I went over it a couple' times during the olympiad. |
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| Dec-06-08 |
| DarthStapler: I didn't get it |
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Dec-06-08
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| johnlspouge: < <spreadsanity> wrote: White doesn't end up with as much of an advantage if black plays 21...Ne5 > I ran Toga for longer, and it changed its mind and agrees that 21...Ne5 is better than 21...Nc5. Thanks, <wals>, for correcting me (however gently :) |
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Dec-06-08
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| rookee1: really really dumb question: why doesn't get Black get a bank rank mate with his queen? |
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Dec-06-08
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| rookee1: oops - sorry I didn't see the answer was already posted to my stupid question. |
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| Dec-06-08 |
| wetpaste: <Once: But what about the squares that a knight cannot control?> Well, they are an anti-queen. A queen controls all of the squares that a knight cannot (in a certain radius). Or was that the point of your diagram? A knight is able to jump in the hole of a queens vision, 2 squares out. That was one of my first chess revelations. It is an interesting dynamic, a knight is the only that, when attacking, cannot be directly attacked back. (i mean, this is also true between bishops and rooks, queens and rooks, and queens and bishops, and pawns and rooks). but the knight is the all encompassing indirect attacker (except N vs N). |
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| Dec-06-08 |
| Civhai: I wanted to play Nf7, too and thought about Rxe6 in the next few moves. Didn't see the whole combination, of courses, but I found out some ideas and since I've got 1200 ELO and it is saturday, I can't be unhappy about that. |
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| Dec-06-08 |
| LivBlockade: <<anandrulez>: Can anyone tell me what will happen if black plays 21...Kxe6 ( accept rook sac) and on 22.Bc4 plays Kf5 ? >
click for larger viewWhite mates starting with 23. Qh5+ |
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| Dec-06-08 |
| TheCap: Wow.
Would he have known at the moment of sacrifice or was gut feeling involved...
I had Nxf7, but wasn't even sure if black would take it (Rf1?)...
That is the difficulty to calculate not only the most probable line, but also all the strange replies black may have...
fantastic work by white... |
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Dec-06-08
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| patzer2: For today's Saturday puzzle solution, 16-year-old Fabiano Caruana, the youngest ever GM from the U.S. and Italy (dual citizenship), displays some amazing fire works with a double piece sacrifice to initiate a decisive demolition and pursuit (King Hunt) combination -- beginning with 20. Nxf7!! Kxf7 21. Rxe6! Here's my computer (Fritz) checked breakout:
<20. Nxf7!! Kxf7>
If 20... Bxg3, White wins after 21. fxg3! when play might continue 21...Rf8 22. Rxe6 Rxf7 23. Rxf7 Kxf7 24. Bc4 Kf8 25. Qe7+ Kg8 26. Rg6+ Qxc4 27. Qxg7#. <21. Rxe6! Nc5>
If 21... Kxe6, then White wins with 22. Bc4+! when play might continue 22...Bd5 23. Qe4+ Kf6 24. Qxd5 Nc5 25. Bxd6 Qxd6 26. Qf7+ Ke5 27. f4+ Kd4 28. c3+ Ke3 29. Qh5 Nd3 30. Qf3+ Kd2 31. Rd1+ Kc2 32. Qe2#. If 21... Qc6, then White should be able to gain a decisive advantage with 22. f3! when play could continue 22...Nf6 (22...Kxe6 23. Bc4+ Kf5 24. Qh5+ Kf6 25. Qf7+ Kg5 26. h4#) 23. Rxf6+ gxf6 24. Qh5+
Ke7 25. Re1+ Be5 26. Bxe5 Rxd3 27. Bf4+ Kd8 28. Qf7  . If 21... Ne5, then White gains a strong advantage with 22. Rxe5! Bxe5 23. Qh5+! when play might continue 23...Kg8 24. Bxe5 Qc6 25. f3 Qe6 26. Re1 Re8 27. h3 Rad8 28. Bc3 Qxe1+
29. Bxe1 Rxe1+ 30. Kh2 Bd5 31. Qh4 Rde8 32. Qd4 Bf7 33. Be4 . <22. Rxd6 Rxd6 23. Qf4+ Ke7 24. Re1+ Kd7> If 24... Ne6, then White wins with 25. Bc4! when play might continue 25...Qc6 (25... Bxg2+ 26. Kxg2 Qc6+ 27. Re4 Rad8 28. Qe5 Kf7 29. Qf5+ Ke7 30. Qg6 Kd7 31. Bxe6+ Rxe6 32. Qf7+ Kc8 33. Qxe6+ ) 26. Qxd6+ Qxd6 27. Bxd6+ Kxd6 28. Rxe6+ . <25. Bb5+ Bc6 26. Qf5+ Ne6 27. Bxd6 Qxd6 28. Rxe6> 1-0 Black resigns in lieu of 28...Qxe6 29. Bxc6+ Ke7 30. Qxe6+ Kxe6 31. Bxa8 . |
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Dec-07-08
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| Once: <wetpaste: Well, they are an anti-queen> Like it! British professional players used to say "queen and knight - you'll be all right." The queen and knight complement each other so well because they cover a different set of squares. |
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Dec-08-08
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| whiteshark: <Once> I like your diagram. Good for pattern recognition. Of all the 8 squares a central  covers,
4 are forward,
4 are backward,
4 lay starboard,
4 lay portside.
Or 2 in each quadrant. (NE-SE-SW-NW)
btw, are you already fully recovered ?
:D |
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Apr-13-09
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| notyetagm: Absolutely beautiful game. Caruana's best game so far. |
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Apr-13-09
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| notyetagm: Does anyone know if this game won the <BRILLIANCY PRIZE> at the Dresden Olympiad, if there was one? Thanks |
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| Jun-15-09 |
| Whitehat1963: Amazing combination! |
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Later Kibitzing > |
sac: 22.Rxd6
icon.
