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Eric Alfons Arnlind vs Sidney Bernstein
olm5 fin B1 corr6568 (1965) (correspondence), ICCF
Sicilian Defense: Old Sicilian. Open (B32)  ·  1-0



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sac: 17.Bb6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-16-15  Steve.Patzer: I got 16. Ndb5 but didn't check further. I thought the initial response would be 16....Be6 just to stay alive.
Apr-16-15  aporia: This three move combination is the most accurate definition of the Knight I have ever seen.
Apr-16-15  diagonalley: once you spot that the target weakness is black's Q1 square, the theme becomes apparent... however, visualising the sequence of moves required to dislodge the black Q is very tricky... too tricky for <diagonalley> :-( ... great puzzle
Apr-16-15  M.Hassan: "Medium"
White to play 16.?
White is a pawn down and has the Knight pair for a Bishop and a Knight.

Move 16 should be obvious. Opening up the file for Queen+Rook battery by a Knight move to facillitate Qd8#. Knight move to: -Not in e6 nor to f5, both will cause 16...BxN and d8 will no longer be unsupported. -Also not to c6 since 16...Qd6 blocking the d file
-And Knight to e2 is pointless
That leaves one square:

16.Nb5 with the intention to move to c7 for a fork destroying castling move of black and winning a Rook

<if 16...Qa5 17.Bb6! Qxb6(forced) 18.Na4 Queen is trapped and has to either: 18..........Qxb5 leaving black square

OR 18..........Qd4
19.Nxd4 0-0>

So, it is best to castle on move 16

17.a3 Qa5
18.b4 Qd8
19.Qxd8 Rxd8
20.Rxd8+ Kh7
White is a pawn+Rook up

Apr-16-15  stacase: Combos like this are why we play Chess.
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pairband a pawn.

Black threatens 16... exd4.

The obvious 16.Nc6 is met with 16... Qd6.

Another option is 16.Ndb5, threatening 17.Qd8#, 17.Nc7+ and 17.a3 to trap the queen:

A) 16... Qa5 17.Nd5

A.1) 17... Qd8 18.Ndc7+ wins.

A.2) 17... Qxd2 18.Ndc7+

A.2.a) 18... Kd8 19.Rxd2+

A.2.a.i) 19... Bd7 20.Nxa8 axb5 21.Nb6 followed by Nxd7 wins an exchange.

A.2.a.ii) 19... Nd7 20.Nxa8 as in A.2.a.i.

A.2.b) 18... Kf8 19.Rxd2 Bd7 (19... axb5 20.Rd8+ Ne8 21.Nxe8#) 20.Nxa8 axb5 (20... Bxb5 21.Rd8+ followed by 22.Nc7 and Nxe8, winning an exchange, looks easier for White) 21.Nb6 Bc6 22.c4 wins an exchange.

A.3) 17... axb5 18.Qxa5 Rxa5 19.Nc7+ Kf8 20.Rd8+ Ne8 21.Rxe8#.

A.4) 17... Qxb5 18.Nc7+ Kf8 19.Qd8#.

B) 16... 0-0 17.a3

B.1) 17... Qa5 18.b4 Qd8 19.Qxd8 Rxd8 20.Rxd8+ Kh5 21.Nc7 Rb8 22.Ba7 wins both rooks.

B.2) 17... Qh4 18.Bg5 Bh6 (18... Qxg5 19.Qxg5 axb5 20.Nxb5 + - [Q vs 2B]) 19.Bxh6 axb5 20.Bxf8 (20.Bg5 Qd4) wins a rook (20... Kxf8 21.Qh6+ and mate in two).

Apr-16-15  hadi706: سیاه یعد از حرکت 11 با ید شاه در قلعه میکرد
Apr-16-15  abuzic: 16.Ndb5 0-0 17.a3 Qa5 18.b4 Qxb5 19.Nxb5 20.axb5

click for larger view

black n+b+p for white's Q. black's king in safe position, b can go to e6 or f5, the a file is open for the r. can white win this

Apr-16-15  Dionysius1: Very pretty. I did what <lost in space> did and picked 16 Nc6. Note to self: cup of tea first!
Apr-16-15  grootbrabant: I agree with <hadi706>. King's safety first and black had a couple of chances to castle to keep away from trouble like this.
Premium Chessgames Member
  perfidious: An elegant reminder of the grim fate awaiting Black's king in open Sicilians if he is not ever mindful of his monarch's safety.
Premium Chessgames Member
  scormus: Very attractive finish! I thought 16 Ndb5 (Qa5) must be the move, then I tried to make 17 Nd5 work .... seems to give only a modest advantage. Not a great success for me today, I missed the forcing sequence with Bb6 and Na4 :(
Apr-16-15  nalinw: I was so annoyed at not seeing this - appears easier with hindsight. After all there are only a few candidates.

But - surprise, surprise - so many of the regular solvers were also stumped or picked second-best solutions.

Must be something about the irregular move of the Knights ....

Apr-16-15  whiteshark: Back in the 1980 I read a small annotated game in a chess column of a tabloid pressmagazine, that is still kind of vivid in my memory:

Because of that Eric Alfons Arnlind is a name I always connect with M Yudovich Sr. vs E Arnlind, 1974 and his 14 days of hard research for a move after <25.Nc4>

click for larger view

M Yudovich Sr. vs E Arnlind, 1974 , a position he would almost had resigned.

Apr-16-15  morfishine: This one was pure pattern-recognition for me; not that I recall this specific game, but that I found myself in almost the same position, albeit on the receiving end, in a long-forgotten tournament years ago.

After <16.Ndb5> its not too hard to see that White controls the vital dark squares, and the Black Queen has nowhere to hide. White's pawn on <f3> is the quiet killer, preventing the Black Queen from escaping to <g4>

Best for Black is to bail with 16...O-O and after 17.a3 to go ahead and surrender the Queen for two Knights: 17.a3 Qxb5 18.Nxb5 axb5

click for larger view

Of course it loses for Black, but thats the thinking of a newbie in the 1700 section :)


Apr-16-15  cocker: The follow up 17 Bb6 is the difficult move.
Apr-16-15  patzer2: Right piece but wrong square for me on my failed try at today's Thursday puzzle solution with 16. Nc6? which is refuted by 16...Qd6 =.

Here's a look at a few key moves in the game and puzzle position with Deep Fritz 14:

<12...Nc4?> This appears to be the losing move as it forces the exchange of Bishop for Knight, but in the process gives White a won game.

Much better here is simply 12...Nxb3 13. Nxb3 b5 =.

<13. Bxc4! Qxc4 14. b3! > This is the continuation Black missed in the attempt to improve over the simple 12...Nxb3 13. Nxb3 b5 =.

<14...Qb4> The best move in a bad position.

If 14...Qc7, then 15. e5! Nd7 16. Nd5 Qb8 17. e6! Nf6 (17...fxe6 18. Nxe6 Kf7 19. Nxg7 Kxg7 20. Nxe7) 18. exf7+ Kxf7 19. Nb6! Ra7 20. Rhe1 (+2.03 @ 20 depth) gives White a decisive position.

<15. e5!> White sacrifices the pawn to clear the d-file and prepare the way for his next tactical shot.

<15...dxe5> Again the best move in a bad position.

Moving the Knight out of the way with 15...Nd7 16. Nd5 , 15...Ng8 16. Nd5 or 15...Nh7 16. Nd5 looks to be winning for White.

<15. Ndb5!!> This solves today's Thursday puzzle with a subtle double attack, threatening an obvious mate and a not so obvious threat to trap the Queen.

Not 15. Nc6? Qc6! = or 15. Nf5?? Bxf5 .

<16...Qa5?> This obvious attempt to protect the Queen and prevent mate overlooks White's strong reply.

Instead, Black can drop the Queen but still make a game of it after 16...0-0! 17. a3! Qa5 18. b4! Qxb5 19. Nxb5 axb5 20. Kb2 Bf5 21. Rhe1 Kh7 (+ 0.67 @ 24 depth, Deep Fritz 14).

<17. Bb6!> After this strong follow-up, black must surrender the Queen in a clearly lost position.

<17...Qxb6 18. Na4!> This completes the double attack, forcing Black to decide between surrendering the Queen or getting mated.

<18...axb5> Not 18...Qxb5 19. Qd8#.

<19. Nxb6> Now Black must choose between dropping his Rook or getting mated.

<19...Be6 1-0> After making this move, Black resigns in lieu of 20. Nxa8 (+ 10.30 @ 22 depth).

Apr-16-15  kevin86: I missed by Nc6, when Nb5 was clearly the best move.
Apr-16-15  Marmot PFL: Correspondence game. OTB I doubt too many players would see the trap beginning with 15 e5, and even in the puzzle position where the Nd4 has to move 16 Ndb5 is still hard to find. It works because the knight controls a3 and d6, and can't be taken because of Qd8 mate. at least in 1965 you know they didn't cheat with fritz.
Apr-16-15  M.Hassan: <hadi706: ÓیÇå یÚÏ ÇÒ ÍÑ˜Ê 11 ÈÇ یÏ ÔÇå ÏÑ ÞáÚå ãی˜ÑÏ>


Apr-16-15  Longview: I could not see much of an attack on the king, failing to see how to open the d-file. I did want to attack the queen as a target trying to distract from my dead (to me) knight on e4. I did not envision the Mate threat of Qe8 if the e4 Knight were to move....duh. I wanted to move the c3 Knight and force a Queen exchange trying to get N-a4 Nc6 in thinking about a fork but it really is an empty change of N for B. After seeing the game move, I failed to recognize the trap that was being built for the
Apr-16-15  stst: Not an immediate easy shot.

A quick line to gain material is:
16.Ndb5 if axb5 or Qxb5,

Almost the only defense is to intervene with N, thus
16.........Nd7, but then the R is off via

The quick & sweet
16.Nc6 bxc6

fails to the tougher defense
after which the exchange
17.Qxd6 exd6
18.Nb4 does lead to significant advantage for White, e.g.
19.Bg5 Nd7
20.Nbd5 f6(*)
21.Bxf6 Nxf6
22.Nc7+ Kf7
23.Nxa8 ... and White is up a R.

If (A)20...... Rb8, 21.Nc7#
If (B) 20.......Be7, 21.Nc7+ and the Black R is off.

Apr-16-15  goodevans: In the final game position black might consider <18...Bh6>. White wins the R in the corner but since he's already sac'd B+P that's not a big plus. On the other hand, black's pieces are very discoordinated so white shouldn't take too long to press home the win.
Premium Chessgames Member
  Penguincw: I thought there was no silver bullet for 17.Nc6, until the e8 computer said 17...Qd6. :|
Apr-16-15  Cheapo by the Dozen: Bb6/Na4 is a sweet combination. I totally missed that part.
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