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Gregory Kaidanov vs Aleksander Wojtkiewicz
PCA Qualifier (1994)
Sicilian Defense: Najdorf Variation (B90)  ·  1-0



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sac: 19.Rxd6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Mar-19-06  Cogano: Hello again <al wazir> & I sincerely hope this finds you well. Just for the record, what I do & why I do it goes beyond such things as patriotism. I begin & end my posts the way I do because that reflects my attitude, my beliefs, my philosophy, my personality & my preferred, chosen way of treating myself, & thus others, & of conducting myself in general. You must conduct yourself as your conscious dictates. Respectfully, you're asking to change who I am, change my beliefs etc. so as to communicate differently. Sure I can get lazy at times & have tried walking that road. But, I've found the results too much beneath the standard of ethical, moral, honourable & dignified conduct that I aspire to, that I no longer consider being tired or lazy as an excuse to express myself differently -- just as it would be unreasonable if a guy who always treated his wife/girl-friend well, with respect, with compassion & with dignity etc., thought /decided that treating her like an object or something of no value would be justified under X circumstances! So, respectfully as well, I sincerely hope you can understand my need to refuse your request. :) Thank you most kindly for your anticipated & continued patience, tolerance, understanding, consideration & assistance. Take very good care & have a great day -- & enjoy what's left of your weekend too. :) Cheers mate! :)
Mar-19-06  dakgootje: <fadaly3000> 18.Nxe6 Bxe6 19.Rxd6 Qxd6 20.Bxe5 Qc6 21. Qg5 f6 and black is in no trouble at all.
Mar-19-06  Zaius: <Cogano> I hope that you too will have a great end of weekend. Sometimes I sit around ask myself, "What kind of good things do I wish on Cogano?" and I get a multitude of answers. For one, I hope you have a very good rest of the day. I also hope that tommorow is a good day for you. Who knows maybe you could get lucky during the night in between today and tommorow? I certainly hope so. I hope that your family and friends do well and I hope that their family and friends do well. If you took this to its natural conclusion, you'd realize I hope that all of humanity does well. I wish them the best, I truly do. I just wish happiness upon all people many times over. I wish you the best!

I really do wish you the best!

The best! Really!


Premium Chessgames Member
  al wazir: Et tu, Zaius?
Mar-19-06  Zaius: <al wazir> As per your request, I do not wish any good things upon you.
Mar-19-06  Montreal1666: <Mendrys:><independentthinker .....Can someone punch this into fritz and let me know what the resulting m,oves are? Also, if anyoneh had any engines, can they see if they would have got this move?> After about several minutes (<10) crafty 20.1 found: 18. Nf5 exf5 19. Rxd6 Qxd6 20. Bxe5 Qd2>

As I said before 20)... Qc6 is not forced and obviously not the best move for black. I don't know what does that imply about the puzzle.

Mar-19-06  Boomie: <independentthinker> After 18. ♘de2 f6 and black is up a pawn.

Uncle Fritz sez: 18. ♘de2 f6 19. ♕e3 ♖f7 -0.58/15

Mar-19-06  Cogano: Hello <Zaius> & I sincerely hope this finds you well. Thank you most kindly for your most gracious words. Your attitude & manners are most refreshing, given what the "atmosphere" around here can be like. I'm most obliged to you sir for your well-wishes. I wish you, in turn, the best of everything every day & a most joyous day & night every day & night. Cheers mate! :)
Mar-23-06  patzer2: White's clearance sacrfice 18. Nf5! prepares a decisive attack to weaken and infiltrate Black's Kinside castled position.
Oct-01-10  sevenseaman: The game didn't have a direction until Kaidanov tossed the N at 18. Nf5. Every move thereafter has its purpose written on it. A truly astonishing insight from Kaidanov!
May-10-15  ToTheDeath: A very nice crush.
Dec-17-17  wtpy: Got it quickly but stopped analyzing at Nd5 so didnt consider Re8 as defense. This week has seemed easy, my first 7/7 for several months.
Dec-17-17  Cheapo by the Dozen: Like some of the posters from 2006, I gave up after failing to make Nxe6 work.
Dec-17-17  bane77: First three moves were easy to see for me, at least that was an obvious idea. But the real killer-move is 21. Nxd5! Black is unable to defend weak black squares.
Dec-17-17  morfishine: My first thought was <18.Ndb5> attacking the Black Queen along with a double attack on the DSB (besides the clearance theme initiating an attack down the d-file)

I didn't really see <18.Nf5> at all


Dec-17-17  patzer2: Black's not so obvious error was 17...Bd6?, allowing today's difficult Sunday puzzle solution 18. Nf5!! +-.

Instead, 17...f6 18. Nf5 Bc6! = (0.00 @ 33 ply, Stockfish 8) holds it level.

Dec-17-17  malt: <18.Nf5!> does the job.
Dec-17-17  Marmot PFL: Beautiful game. 17...Bd6 looks suspicious, putting an important defensive piece in the fire of Rd1, but proving this is difficult.
Dec-17-17  Nosnibor: I think that this is a very easy one for Sunday and cannot be regarded insane. Solved it all the way to the end without a board in less than one minute.
Premium Chessgames Member
  agb2002: White is one pawn down.

The bishop on d6 protects th knight on e5. This suggests 18.Nf5 or 18.Ndb5 with idea of Rxd6. In the case of 18.Nf5:

A) 18... exf5 19.Rxd6

A.1) 19... Qxd6 20.Bxe5

A.1.a) 20... Qe7 21.Nd5 Qd8 (21... Qe6(8) loses the queen to 22.Nf6+) 22.Nf6+

A.1.a.i) 22... Kg7 23.Nxd7+ f6 24.Nxc5 Qb6 (24... fxe5 25.Ne6+ and 26.Nxd8) 25.Bd4 + - [2B+N vs r+p].

A.1.a.ii) 22... Kh8 23.Qh4 h5 24.Qg5 Kg7 25.Nxh5+ Kh7 (25... Kg8 26.Qh6 and mate next) 26.Nf6+ Kg7 27.Ne8+ Kh7 (27... Kg8 28.Qxg6#) 28.Bf6 with the double threat 29.Qh4+ Kg8 30.Qh8# and 29.Bxd8.

A.1.b) 20... Qb6 21.Nd5 Qd8 (21... Qa7 22.Ne7#) transposes to A.1.a.

A.1.c) 20... Qc6 21.Nd5 Rfe8 (due to 22.Ne7# or 22.Ne7+ and 23.Nxc6) 22.Nf6+ Kf8 23.Nxh7+

A.1.c.i) 23... Ke7 24.Qg5+ f6 25.Bxf6+ Kd6 26.Qf4+ Re5 27.Qxe5#.

A.1.c.ii) 23... Kg8 24.Nf6+ Kf8 25.Bd6+ Re7 (25... Kg7 26.Qc3 with the threat Nxe8+ or 26.Nxe8+ Rxe8 27.Qc3+ and 28.Qxc5 wins a piece) 26.Qe3 with the double threat Qh6# and Qxe7+.

A.1.d) 20... Qd2 21.Bf4 Qd4+ 22.Be3 Qb4 (else 23.Bxc5) 23.Nd5 Qa(b)5 (23... Ne4 24.Qe5 Qa(b)5 25.Ne7#) 24.Nf6+

A.1.d.i) 24... Kh8 25.Qh4 h5 (25... Kg7 26.Bh6+ Kh8 27.Bxf8 h5 28.Qg5 wins) 26.Qg5 Kg7 27.Nxh5+ Kg8 28.Nf6+ Kg7 29.Be5 looks winning.

A.1.d.ii) 24... Kg7 25.Qe5 Kh8 (25... Nxb3 (say) 26.Nh5+ Kg8 27.Qg7#) 26.Nxd7+ f6 27.Nxf6 wins decisive material.

A.2) 19... Nxb3 20.Bxe5

A.2.a) 20... Nc5 21.Rxg6+ fxg6 22.Bxc7 + - [Q vs r+n].

A.2.b) 20... f6 21.Nd5 (21.Rxf6 Qc5+) 21... Qd8 (21... Nc6(8) 22.Ne7+ wins; 21... Qb8 22.Rxf6 followed by Qxb3 wins a piece at least) 22.Nxf6+ followed by Qxb3 wins a piece at least.

A.2.c) 20... Qc8 21.axb3 wins a piece.

B) 18... Cxb3 19.Nxd6 with the double threat axb3 and Bxe5 seems to win a piece.

C) 18... Nf3+ 19.Rxf3 Bxf4 20.Nh6+ Kg7 (20... Bxh6 21.Qxc7 wins) 21.Rxf4 e5 (21... Kxh6 22.Rh4+ Kg7 23.Qxc7 wins) 22.Rh4 + - [N vs p].

Dec-17-17  ChessHigherCat: think this variant is prettier ( 24. Bd5 Qb6 (if Q takes, royal fork on f6+ and if Q leaves the 6th rank, Qxg6#) 25. Bc7!

25...Ne4 looks like a possible counterattack/defense, but I think 26. Nf6+ refutes it (if Nxf6 Bxb6 or if Kf8 Nxe4 and there's still the mating threat and black's Q is en prise.

Dec-17-17  malt: 18.Nf5! ef5 19.R:d6 Q:d6 20.B:e5 Qd2
21.Nd5 Rfd8 22.Nf6+ Kf8 23.N:h7+ Ke8
24.Bc3 Qh6 25.Qe5+ Be6 26.Nf6+ Ke7
(26...Kf8 29.Q:c5+ Kg7 30.Ng4+)
27.Q:c5+ Rd6 28 B:e6 (28...fe6 29.Qc7+)28...Rh8 29.Ng8+ R:g8 30.Qc7+ K:e6 31.Re1+
Dec-17-17  TheBish: I had the right idea, but for some reason only considered 18. Ndb5. I'm sure it's not as good, but will have to check the engine to see if it is even close to good!
Dec-17-17  TheBish: Nope. Seems the key difference between 18. Ndb5 and 18. Nf5!! is the weakening of d5 (after 18...exf5) for the Nc3 to enter the attack, which is a killer when combined with the weakened dark squares.
Dec-17-17  Whitehat1963: Absolutely brilliant combination. I wonder how much of it he saw from the beginning.
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