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David J Coleman vs Murray Chandler
Ilford Tournament (1977), Ilford ENG, rd 5, Jun-??
Caro-Kann Defense: Panov Attack. Modern Defense Mieses Line (B13)  ·  0-1

ANALYSIS [x]

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Given 28 times; par: 28 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-27-20  Cellist: I saw the solution pretty quickly and all the way to the end. I feel relieved after the hard problems in the last few days. The Black Q and R are very powerful when the files are open and when White's pieces are too awkwardly placed for defending His Majesty.
Nov-27-20  Walter Glattke: I apologize, quite desperate, having the move number one too high; thinking for unforced errors in tennis, shooting the black from the spot in snooker, if you know that, and to Fairground Attraction's song: it got to be-he-he-he-he-he per-her-her-her-her-her ... FACT. Hope, I can/will make better comments tomorrow.
Nov-27-20
Premium Chessgames Member
  chrisowen: Tangerine rf3 follow my lead no?
Nov-27-20  landshark: I thought a while and played 20.... Rxf3 having satisfied myself that it would deliver checkmate in all lines where the K recaptured my R. But after the game continuation 21. Nd1, I had to start all over again - typical with these late-week puzzles where I only figure out the most obvious replies. I settled on 21... Rd3 but - oops - in the game Black insisted on sacrificing that R on f3 anyway with Qe5 <mate-in 6> SF still liked my idea well enough at <-10.6> which I would find acceptable for the win OTB. Not the best, but my clock was ticking....
Nov-27-20  5hrsolver: Did not see the 21.Nd1 defense. When I saw it in the game my reply was 21...Rd3 which also wins but not as good as 21...Qe5+.
Nov-27-20  offramp: At the first <Thanksgiving> dinner there was both a <coalman> ("Mr Inigo The-Lord-Will-Destroy-Him Pupkin, purveyor of finest coals from ye olde New Castle"), and a <chandler> ("Mr Suleyman Efraimoglu, ship's chandler to His Majesty the King, Gord Bless 'Im").

Believe it or not!

Nov-27-20  RandomVisitor: 20.f3 was the losing move, instead there were two playable choices:


click for larger view

Stockfish_20112608_x64_modern:

<48/62 07:49 0.00 20.Ne4> Qxa1 21.Bg2 Qe5 22.Rc1 Qxh2 23.Kf1 axb6 24.Qb3 Qf4 25.Qxe6+ Kh8 26.Re1 Rc8 27.Qxb6 Rc1 28.Qb3 Rxe1+ 29.Kxe1 b6 30.Qd5 Qf7 31.Qc6 Qxa2 32.Qxb6 Qa1+ 33.Ke2 Qa2+

<48/72 07:49 0.00 20.Ke1> Rxf2 21.Rd1 Rxc2 22.Rxd4 Rxd4 23.bxa7 Rd8 24.Nb5 Rxa2 25.Rg1 Rf8 26.h4 h6 27.h5 Kh8 28.Kd1 Kg8 29.Kc1 Rff2 30.Bd3 Kf8 31.Re1 Ra1+ 32.Bb1 Ke7 33.Rg1 Kf6 34.Rg3 Rf1+ 35.Kc2 Rfxb1 36.Rf3+ Ke7 37.Na3 Rc1+ 38.Kb2 Rcb1+

Nov-27-20  goodevans: Is this the easiest puzzle so far this week? Maybe a sign that 'more difficult than we'd expected' week is about to give way to 'not too bad at all' weekend. If so there's an outside chance I'll make my usual 5/7 after all.

I wouldn't mind seeing this as GOTD one day. Plenty to see here. It seems that the sacs on c5 and b6 have been tried on a quite a few occasions from this position...


click for larger view

... but as far as I can tell this was the first. Despite the precariousness of the white K, SF reckons he'd have been fine after <20.Ke1> ( if 20...Rxf2 then 21.Rd1).

The position after <17.cxb6> was recently reached in B Adhiban vs Anna M Sargsyan, 2019 where black simply took the Nc3 and won convincingly a few moves later.

Nov-27-20  Brenin: <landshark>: I think the situation is that White is mated in all lines where he does NOT capture the R on f3, e.g. 21 Ke1 Qh4+ 22 Ke2 (or Qf2) Qf2#. His only chance of avoiding mate is to accept the sacrifice with 21 Kxf3, losing his Q but surviving with a hopeless position after 21 ... Rf8+ 22 Ke2 Rf2+ 23 Ke1 Rxc2 24 Ne2.
Nov-27-20  RandomVisitor: After 10...Nd4, 11.Qd1 seems to go nowhere:


click for larger view

Stockfish_20112608_x64_modern:

55/75 55:25 +0.39 11.Bb5+ Nd7 12.Qa4 Nxb5 13.Qxb5 g6 14.0-0 Bg7 15.Re1 0-0 16.Bg5 Bxc3 17.bxc3 f6 18.Bh6 Rf7 19.Re6 b6 20.Rd1 Nc5 21.Kg2 Qe8

<55/24 55:25 0.00 11.Qd1> e5 12.dxe6 fxe6 13.Bg2 Bb4 14.0-0 0-0 15.f4 Rc8 16.Bxb7 Rc7 17.Be4 Rd7 18.a4 Qc8 19.a5 Nc4 20.Qd3 Nf5 21.Qe2 Nd4 22.Qd3

Nov-27-20
Premium Chessgames Member
  perfidious: <goodevans>, from ca 1985 to the early 1990s, I used to play into this morass as Black rather than head for the drawish waters of 9....e6, though I actually lost in the ....e6 line as White (!) to William Kelleher at Boston 1988, the only time I ever had that position.

In the actual continuation, believe I had prepared 12....Qf6 rather than 12....Bc5. Looks a total mess either way.

Nov-27-20  RandomVisitor: <goodevans>In that game 18.Rc1 was not best and loses. Better after 17.cxb6 <Qxc3> is 18.Bg2, where white can sacrifice the queen for an unclear position:


click for larger view

Stockfish_20112608_x64_modern:
NNUE evaluation using nn-c3ca321c51c9.nnue enabled

47/50 06:24 0.00 18.Bg2 Rad8 19.Rc1 Qb2+ 20.Qc2 Rd2+ 21.Qxd2 Nxd2 22.Bxd2 Qxb6 23.Rhf1 Qa6+ 24.Ke1 Rd8 25.Be4 Qxa2 26.Bf4 a5 27.f3 a4 28.Rc2 Qa1+

Nov-27-20  King.Arthur.Brazil: I found 25....♖xf3 26.♘d1 like many, however, even after checking that White wouldn't capture the ♖ because all lines will led to check-mate, I passed straight beyond the obvious 26...♕e5+ when such capture is unavoidable, "forgetting" previous analysis and content my self with 26...♖e3, which is not so strong. Maybe, I'm out of focus today (lgs). By the way, what do white suppose to get with this opening? This game seems to be just a premium to such a bad 'strategy'.
Nov-27-20  saturn2: Yesterday Panno's game and today his Caro Kann Variation - coincidence?
Nov-27-20
Premium Chessgames Member
  thegoodanarchist: Coleman was not cooler in this game.
Nov-27-20
Premium Chessgames Member
  perfidious: <saturn2>, the Caro-Kann was played by Panov, not Panno.
Nov-27-20
Premium Chessgames Member
  agb2002: Black has a pawn for a bishop and a knight.

The first idea that comes to mind is 20... Rxf3 (threatens Qf2#, Qe3#, etc.):

A) 21.Kxf3 Rf8+

A.1) 22.Ke2 Rf2+ 23.Ke1 Rxc2 wins. For example, 24.Be2 Qxc3+ 25.Kf2 Qf6+ 26.Ke3 Qe5+ and mate soon.

A.2) 22.Kg2 Qg4#.

A.3) 22.Kg3 Qf4+ 23.Kh3 Qf3+ 24.Kh4 Rf4+ 25.Kg5 Qg4#.

B) 21.Nd1 Rf5

B.1) 22.Rc1 (or 22.bxa7) 22... Re5+ 23.Kf3 Rf8+ 24.Kg3 Rg5+ 25.Kh3 Qg4#.

B.2) 22.Qxf5 exf5 23.Rc1 Qe4+ wins decisive material.

Nov-27-20
Premium Chessgames Member
  agb2002: The text 21... Qe5+ is much quicker than my 21... Rf5.
Nov-27-20  RandomVisitor: How would Stockfish play the Caro-Kann?


click for larger view

Stockfish_20112608_x64_modern:
NNUE evaluation using nn-c3ca321c51c9.nnue enabled

<57/91 5:36:17 +0.30 2.d4 d5 3.e5> Bf5 4.h4 h5 5.Bd3 Bxd3 6.Qxd3 e6 7.Nf3 Qa5+ 8.Nbd2 Ne7 9.c3 Nf5 10.a4 c5 11.dxc5 Qxc5 12.0-0 Qb6

Nov-27-20
Premium Chessgames Member
  eternaloptimist: Wow 🤩 I got every move right on this puzzle & I solved it quickly!! It seems like the vast majority of the time I don’t solve the “difficult” puzzles. This is a well constructed mating net by GM Chandler!
Nov-27-20
Premium Chessgames Member
  HeMateMe: I got the first move and took about a minute to work out a mating net, but never considered whites Knight defense.
Nov-27-20
Premium Chessgames Member
  eternaloptimist: Although actually Chandler was an IM back in ‘77 when he played this game. He didn’t get his GM title until ‘82
Nov-27-20
Premium Chessgames Member
  perfidious: Chandler was actually untitled when this game was played, his final IM norm coming later in 1977 from the Asian Junior Championship.
Nov-27-20
Premium Chessgames Member
  eternaloptimist: Ok so he didn’t become an IM until after this game was played. I wasn’t sure about that
Nov-27-20
Premium Chessgames Member
  perfidious: There was an article on that year's Asian junior in the BCM, but I do not have my copy to hand at the moment; Chandler either won outright or finished first ex aequo.
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