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Pertti Poutiainen vs Jan Timman
Reykjavik Zonal (1975), Reykjavik ISL, rd 8, Oct-30
Zukertort Opening: Kingside Fianchetto (B06)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Sep-24-07  kevin86: I tried Nxf7 followed by Qxh7-but I don't know what to play after that.
Apr-06-11  paavoh: Such an original opening and forceful attack by Poutiainen! A pleasure to play through.
Oct-02-22  Brenin: 27 Bxg6 hxg6 28 Re4 Nf8 29 Rh4 Nh5 looked like the best way to open up the K-side, but then I expected 30 Rxh5 gxh5 31 Qxh5, and then 32 Qxf7+, followed by Rc3 and Rg3. I think this also wins.
Oct-02-22  mel gibson: I wasn't sure although I saw that move.
I didn't look at it long enough.

Stockfish 15 says:

27. Bxg6

(27. Bxg6 (♗b1xg6 h7xg6 ♖e1-e4 ♘d7-f8 ♖e4-h4 ♘f6-h7 ♘g5xh7 e7-e5 ♘h7xf8 ♕d8xh4 ♕h6xh4 ♖e8xf8 ♕h4-f6 e5-e4 ♕f6xd6 a5-a4 ♕d6-b6 ♖c8-b8 c4-c5 a4-a3 d5-d6 g6-g5 ♕b6-c7 g5-g4 ♕c7-e7 ♖f8-e8 ♕e7-g5+ ♔g8-f8 ♕g5-h4 f7-f5 ♕h4-f6+ ♔f8-g8 ♕f6-g5+ ♔g8-h8 ♕g5-h6+ ♔h8-g8 c5-c6 b7xc6 b5xc6 g4xh3 ♕h6xh3 ♔g8-g7 ♕h3-c3+ ♔g7-g6) +12.86/35 810)

score for White +12.86 depth 35.

Oct-02-22  jrredfield: I also jumped right on 27 Bxg6 but then looked at other possibilities and never was certain. Guess I figured the B sac would be to easy for a Saturday.

Komodo Dragon also strongly favors 27 Bxg6. Depth 39:

White +16.63: 27.♗xg6 hxg6 28.♖e4 ♘f8 29.♖h4 ♘6h7 30.♘xh7 e5 31.♘xf8 ♕xh4 32.♕xh4 ♖xf8 33.♕e7 ♖b8 34.♕xd6 ♖fe8 35.♕c7 e4 36.d6 ♖ec8 37.♕xa5 ♖d8 38.♕a7 b6 39.d7 ♖a8 40.♕c7 ♔g7 41.♖d1 ♖ab8 42.♔h2 ♔f8 43.♕d6+ ♔g8 44.♕e7 ♖a8 45.♕xe4 ♖f8 46.♕h4 ♔g7 47.♕e7 ♖ad8 48.f4 ♔g8 49.♖d6 ♖xd7 50.♖xd7 ♔g7

Oct-02-22  jrredfield: 26 ... e6 would have kept the game quite close for Timman:

26. ... e6 27.dxe6 ♘xe6 28.♘xe6 ♖xe6 29.♖xe6 fxe6 30.♗d3 b6 31.♖d1 ♖c5 32.♗f1 d5 33.cxd5 ♘xd5 34.♖e1 ♕e7 35.♕d2 ♘f6 36.a4 ♔f7 37.g3 e5 38.♗g2 e4 39.♕e3 ♔g7 40.♖d1 ♘d5 41.♕d4+ ♘f6 42.♖e1 ♕e5 43.♕xe5 ♖xe5 44.f4 ♖e6 45.♔f2 ♖e8 46.♖e3 ♔f7 47.g4

Oct-02-22  jrredfield: (Score for 26 ... e6: Black -0.47)
Oct-02-22
Premium Chessgames Member
  al wazir: <30 Rxh5 gxh5 31 Qxh5, and then 32 Qxf7+, followed by Rc3 and Rg3. I think this also wins.>

30. Rxh5 gxh5 31. Qxh5 e5 32. Qxf7+ Kh8. Now what?

In the game as played, I think 31. Rg3 followed by Rxh5 wins, e.g., 31...Re7 (31...Nxg3 32. Qh8#) 32. Rxh5 gxh5 33.Nxe6+.

Oct-02-22  boz: My kind of game. Grab that space and mate the king.
Oct-02-22  nalinw: <jrredfield> It is a Sunday .... seeing Bxg6 is not the only requirement I suppose .... there is a long follow up that needs precise play to avoid Black breaking up the attack
Oct-02-22  jrredfield: <nalinw> Yeah I realized it was actually Sunday's POTD just after posting, but too late to change it. Thanks.
Oct-02-22
Premium Chessgames Member
  An Englishman: Good Evening: Couldn't solve the puzzle then, couldn't solve the puzzle now. Oh, well. 5/6 with one already known this week. About as well as me poor brain can do these days.
Oct-02-22  mayankk06: I wanted to try 27 Nxh7 Nxh7 28 Bxg6 fxg6 29 Qxg6+ Kh8.

I now had blown away the pawn cover around the opponent King but lost too much material and the Rook lifts are rather slow to deliver a mate before Black brings over his defence to the open ranks.

Oct-02-22  mayankk06: Looking back at the game, I probably had the right ideas - double sacrifice of Bishop and Knight to destroy the pawn cover, double Rook lift, sacrifice one Rook if needed to bring the opponent King in a mating net etc.

The devil is in the details however and I didn't understand or even guess the right sequence of moves. I discarded the initial Bxg6 move as 27 Bxg6 hxg6 28 Re4 didn't seem forceful enough.

Oct-02-22  Chessius the Messius: Needless to say Black had to play 26... e6. Bit of a no brainer.
Oct-02-22  agb2002: White has a bishop for a knight.

The pawn on f7 is overburdened with the defense of e6 and g6 and the knight on f6 is tied to the defense of h7. These details suggest 27.Bxg6 to open the h-file:

A) 27... fxg6 28.Ne6 Nh5 29.Nxd8 wins decisive material.

B) 27... hxg6 28.Re4

B.1) 28... Nxe4 29.Qh7+ Kf8 30.Qxf7# (or 30.Qh8#).

B.2) 28... Nf8 29.Rh4 N6(8)h7 30.Nxh7 wins.

C) 27... Nf8 28.Bxf7+ Kh8 29.Bxe8 wins decisive material.

D) 27... Ne5 28.Bxh7+ Kh8 (28... Nxh7 29.Qxh7+ Kf8 30.Qh8#) 29.Rxe5 dxe5 30.Bg6+ Kg8 31.Bxf7#.

Oct-02-22  agb2002: Still sleeping: I forgot the main defense in my line B.2, 29... Nh5 30.Rxh5 gxh5 31.Rc3.
Oct-02-22  sfm: In chess we have the moments where we were brilliant and happy, before moving on. Pertti Poutiainen got such moments with these zonal-victories over GM Timman and GM Jansa. P Poutiainen vs Jansa, 1975

Life itself is only a single game. No moving on if you decide it's time to resign.

Oct-02-22  Brenin: <al wazir: <30 Rxh5 gxh5 31 Qxh5, and then 32 Qxf7+, followed by Rc3 and Rg3. I think this also wins.> 30. Rxh5 gxh5 31. Qxh5 e5 32. Qxf7+ Kh8. Now what?>

33 Qh5+ Kg8 34 Rc3, followed by 35 Rg3, or 34 Nf7, followed by 35 Nh6+, both look to me like wins for White.

Oct-02-22
Premium Chessgames Member
  chrisowen: Lop I would vet jezebel Bxg6 v its achtung munch key fob v its a boa its auld buffed v its zoid key caver con tadah its drive dud off Bxg6 cite;
Oct-02-22
Premium Chessgames Member
  perfidious: Is Jezebel really a key fob?
Oct-02-22
Premium Chessgames Member
  chrisowen: <perfidious> Dreadlocks I'm Bg6
Oct-02-22  thegoodanarchist: White's attack was pertti good.
Oct-02-22  King.Arthur.Brazil: The King investigated the line 27. ♖e6?! fxe6 28. ♗xg6 hxg6 29. ♕xg6+ ♔f8 30. ♘xe6# or 29...♔h8 30. ♘f7#. Well, it seems good, if Black accept all the sacrifices. However, the simple line 28...♘f8! 29. ♗f7+ ♔h8 30. ♘xe6? ♘xe6 31. dxe6 ♖f8 32. ♖c3 ♖xf7! 33. exf7 ♕f8 avoids the White attack. Another trial: 30. ♗xe6! ♕b6 31. ♘f7+ ♔g8 32. ♖c3 ♘g6 33. ♖g3 ♕d4 34. ♖xg6+ hxg6 35. ♘h8#. It seems that this line has really chances to win. The question is, Black is not forced to capture (27...fxe6). So there must be another move best than this. Let's see it.
Jun-20-24
Premium Chessgames Member
  Stonehenge: A Perttinent Point.
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