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Boris Spassky vs Murray Chandler
Plaza (1988), Wellington NZL, rd 11, Mar-28
Queen's Gambit Accepted: Furman Variation (D27)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
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Jul-09-09  AnalyzeThis: <Thanks to User: Honza Cervenka for spotting the move which we used for today's somewhat tricky Thursday puzzle.>

Looks like Benzol was first.

Jul-09-09  levelzx: Umm, whoever found the winning move should be proud of himself. I personally tried and tried in vain. I thought it would be 22. Nxc5 Bxc5 23. Na5 with two Bishops hanging, but here comes 23...Bxe3+ and it's White, who loses. Oh, and in this variation Black has also 23...Rd2, which is equally awful.
Jul-09-09  TheBish: Spassky vs Chandler, 1988

White to play (22.?) "Medium"

I think I may have seen this before, but I don't think it was too tough anyway.

22. Bc3!

Removing the defender, since Black's next is forced.

22...Bxc3 (or 22...Nxa4 23. Bxc5+ followed by winning the knight)

23. Nxc5!

Now two pieces are attacked, and White comes out a piece ahead (23...Bd2 24. Rd2).

Jul-09-09
Premium Chessgames Member
  whiteshark: I think 22.Bc3 was a chance that arose quite unexpected.
Jul-09-09
Premium Chessgames Member
  agb2002: Material is even. Black's DSB protects the knight on c5. Therefore, attack the defender with 22.Bc3:

A) 22... Bxc3 23.Nxc5

A.1) 23... Bd2 24.Rc2 Bb4 25.Nxb7 Rd7 26.Nba5 + -.

A.2) 23... Bb4 is similar to A.1.

A.3) 23... Rc8 24.Nxb7 + -.

B) 22... Nxa4 23.Bxb4+ and 24.bxa4 + -.

C) 22... Nxb3 23.Bxb4+ and 24.Rd1 + -.

D) 22... a5 23.Bxb4 axb4 24.Nxc5 + -.

E) 22... Nd3 23.Bxd3 Bxc3 (23... Rxd3 24.Bxb4+) 24.Rxc3 Nd5 25.Rc1 Nxe3 26.Nxe3 Rxd3 27.Rd7+ + -.

F) 22... Nd5 23.Bxb4 Nxb4 24.Nxc5 + -.

Jul-09-09  gofer: Lots of choices... ...but I like...

22 Nd5

The point being that the knight on c5 is now attacked, but cannot move because 23 Rc7+ will tear black's defenses to pieces. So what can black do?

22 ... Rd2 23 Nxc5 Rxd2 24 Nxb7 Rxb2 25 Nc6+ winning

22 ... Nxb3 23 Rc7+ Nd7 24 Rxb7 winning
22 ... Nxa4 23 Rc7+ Nd7 24 Rxb7 winning
22 ... Nxa4 23 Rc7+ Rd7 24 Nxd7 Nxb2 25 Nxf6+ Kxf6 26 Rxb7 a5 now black has to struggle to save the Knight as it cannot easily move without being taken...

there are probably loads more options, but its time to check...

Jul-09-09  Confuse: Quiet move on a Thursday!? Tough.
Jul-09-09  UnsoundHero: White should realize the "trapped" nature of the black Bb4. The move 22 Bc3 fights for control of the diagonal a3-f8. The black Ke7 is an unfortunate target.

Four years after this game, Spassky evidently learned how important this diagonal was, and utilized it in his re-match with Fischer ("The $5 million match").

Spassky vs Fischer, 1992

Jul-09-09  jsheedy: I kept looking at clearing the b-file with 22. Bxf6+ and 23. Nxc5, Bxc5, and then 24. b4 to entice 24...Bxb4, 25. Rb1 winning a piece, but black doesn't need to take the b-pawn.
Jul-09-09  levelzx: <gofer> Your analysis is just... bad.

22. Nd5 is not legal, since White's Knights are at a4 and c4 and have no access to d5.

Even if 22. Nd5 was legal, it would disable Black's 22...Rd2, that was mentioned in your variations.

First variation: Black plays 22... Rd2 and then 23...Rxd2 just one move later, which is absolutely impossible.

And finally, in remaining variations Black doesn't have to play ...Nd7, losing a Bishop to Rook check. He can cover his King with ...Rd7 (yes, it's still there!) and his Bishop is perfectly secure.

Were you drunk or something?

Jul-09-09  sileps: Hands down, this one was too tough for me for some reason. I guess it's because it's a very subtle move and I didn't give it much thought.
Jul-09-09  geeker: I had seen this position before, but didn't solve it then (also went for N:c5), so I failed.
Jul-09-09  JG27Pyth: I think I looked at every move on the board except Bc3. I found and avoided the losing combination other posters have mentioned... Nxc5 Bxc5 Na5?? Bxe3+ ...and I had seen from my first moments looking at the postion that the Black DSB had problems... but for some reason Bc3 eluded me. Consolation prize, it eluded a former World Champion, too. Just too many tantalizing N forky things to try perhaps and not enough clear focus on simply exploiting Black's problem Bishop. I think that's why Dzechiel got this one so cleanly... he saw the problem and went right at it without distraction.

Well, at least I have an unusual excuse today: I just discovered my pet female Madagascan "hissing" cockroach dead in her cage; how could I be expected to concentrate?!

Jul-09-09  beenthere240: <levelzx> have a heart and suspect a typo before inebriation. I think gofer was looking at 22. Ne5 (not d5) While the analysis is unconvincing, it isn't predicated on an illegal position.
Jul-09-09
Premium Chessgames Member
  kevin86: Bravos to Honza Cervinka for finding today's puzzle!-it's so great that even a champion can miss the correct move.
Jul-09-09  Summerfruit: Material is even.

The black bishop at b4 is unprotected and also the sole defender of the knight at c5, so attack the defender:

22.Bc3!

Black will now lose a piece in all variations:

a) Take the bishop

22...Bxc3 23.Nxc5

Leaving both black's bishops en prise, e.g.:

a1: 23...Bd2 24.Rd1 winning

a2: 23...Bb4 24.Nxb7 Rb8 25.Nca5 winning

a3: 23...Bb2 24.Nxb2 Rd2 25.Nxb7 winning

a4: 23...Bxf3 24.Bxf3 winning

c) Protect the bishop:

c1: 22...a5 23.Bxb4 axb4 24.Nxc5 winning

c2: 22...Nd3 23.Bxd3 Bxc3 24.Rxc3 winning

c3: 22...Nd5 23.Bxb4 Nxb4 24.Nxc5 winning

d) Captures

d1: 22...Bxf3 23.Bxb4 Bxe2 24.Bxc5 winning

d2: 22...Nxb3 24.Bxb4+ winning

Jul-09-09  CHESSTTCAMPS: Material is even with all pieces active on both sides. Black is threatening 22...Nxb3 with the idea that 22.Nxc5? Bxc5 puts pressure on white's vulnerable e-pawn. Unfortunately for Chandler, the lineup of two black pieces on the king's diagonal and the fact that black's DSB is the one piece directly defending another piece allows this bishop to be overloaded. In fact,

22.Bc3! wins at least a piece in all variations, e.g.

A. 22... a5 23.Bxb4 axb4 24.Nxc5

B. 22... Nxa4 23.Bxb4+ K-moves 24.bxa4

C. 22... Nxb3? 23.Bxb4+ Ke8 24.Rb1 a5 25.Bc3 and a 2nd piece falls

D. 23... Bxc3 24.Nxc5 Bb4 25.Nxb7 Rc8 (threatening Rc7) 26.Rd1 Rc7 27.Nd6 Bd6 28.Nxd6 Rc3 29.Bxa6 and black can resign.

Black probably resigned after 22.Bc3 or went a few moves down line D. Time to check.

Jul-09-09  levelzx: Ah, OK, sorry <gofer>. But anyway, I think 22...Rd2 is good enough to answer 22. Ne5, since Black won't waste a tempo the way they did at these analysis.
Jul-09-09
Premium Chessgames Member
  ajk68: I was also looking at Ne5.
There seem to be lots of attacking possibilities. Maybe there's a solid defense, but white seems to get a lot of initiative.
Jul-09-09  WhiteRook48: I was spending too much time trying to make 22 Ncb6? or 22 Bxf6+? work
Jul-09-09  LeroyGreat: I got 22.Ne5 with white winning at least one pawn, tell me what you guys think.
Jul-09-09  patzer2: For today's Friday puzzle solution, the move 22. Bc3! (missed by Spassky) wins a piece with an unusual and amusing double attack.
Jul-09-09
Premium Chessgames Member
  johnlspouge: Thursday (Medium):

Spassky vs Chandler, 1988 (22.?)

White to play and win.

Material: Even. The Black Ke7 has 3 legal moves, and White can play Bb7xf6+. The White Rc1 has a discovered attack on Nc5 from behind Nc4. The White Na5 also attacks Nc5. White can play Nc4-a5 to attack Bb7. The Black Bb4 is loose and has no flight squares. The White Kg1 is secured from check.

Candidates (22.): Nxc5, Bc3

22.Bc3 (threatening 23.Bxb4)

22…Bxc3 [on Nxa4, Nxb6, or a5, the threat wins a piece]

23.Nxc5 (threatening 24.Nxb7 or 24.Rxc3)

23…Bd2 [else, drop material immediately]

24.Rc2

Black must choose between dropping Bd2 or Bb7.

Jul-09-09  zenpharaohs: I'm feeling pretty good about getting this one. I actually thought I must have missed it since for some reason I suspected I had only found the second best move.
Jul-10-09
Premium Chessgames Member
  sleepyirv: It just sort of came to me. The action seemed to be taking place in that corner. I'm usually the victim of these "knightmares" where double attacks come from everywhere. A very sharp tactical position.
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