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Lars Karlsson vs Helgi Olafsson
Lucerne Zonal prel-B (1979), Lucerne SUI, rd 5, May-??
Formation: King's Indian Attack (A07)  ·  0-1



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find similar games 2 more L Karlsson/H Olafsson games
sac: 25...exf4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Premium Chessgames Member
  fredthebear: Once the center opens with 25.f4 exf4, "the fur flies". Black gets inside before White does.
Premium Chessgames Member
  OhioChessFan: Wow. If this is a Friday, I won't be able to solve Saturday and Sunday even if I use Rybka.
Jul-03-20  Brenin: White is effectively a queen down during this beautifully played attack: her majesty self-isolates on b3, and plays no part in the subsequent proceedings. By the time the a2-g8 diagonal opens up with 33 Ne5, it it is too late for her to do anything effective, e.g. if 34 Qxd5 then Rh2+ with mate.
Jul-03-20  phantasmagorium: Why not just keep on eating with 27. Rxe8? Say, if 27... Qxg3 then 28. Qc2. Or does Black have something better?
Jul-03-20  mel gibson: I saw the first move but Stockfish 11
picks a different line:

25... Rbd8

(25. .. Rbd8
(♖b8-d8 ♕b3-c2 e5xf4 g3xf4 ♘d5-f6 ♕c2-f2 ♘f6-h5 ♗g2-f3 ♗g7-f6 ♘a3-c2 ♗e6-f7 ♖e1xe8 ♗f7xe8 ♗f3xh5 g6xh5 ♔g1-h2 ♗e8-f7 ♘c4-e3 ♕c7-d7 ♕f2-e2 ♖d8-e8 ♕e2-f3 h5-h4 ♘c2-a3 ♖e8-b8 ♖d1-g1 b6-b5 a4xb5 a6xb5 ♘a3-c2 ♖b8-e8 ♕f3-g2 ♖e8-g8 ♕g2-f1 ♖g8-d8 ♘c2-e1 ♘c6-e7 ♘e3-c2 b5-b4 c3xb4 c5xb4 ♘c2xb4 ♗f6-d4 ♖g1-g2) +1.72/38 219)

score for Black +1.72 depth 38

Jul-03-20  morfishine: Bizarre series of moves
Jul-03-20  Brenin: <phantasmagorium>: In your line, after 28 ... Rxe8 29 Qf2 is forced, and then the obvious exchanges starting with 29 ... Qxg2+ leave Black a pawn up with a better position. At least White survives to fight on. However, an immediate 27 ... Rxe8 28 Kh2 Re2 29 Rd2 fxg2 30 Rxe2 Qxg3+ 31 Kxg3 (31 Kg1 Bd4+) g8=Q+, followed by 32 ... Qxc1, looks promising for Black.
Jul-03-20  goodevans: <phantasmagorium> After 27.Rxe8 Rxe8 the threat of black getting his R to e2 causes white's position to collapse.

click for larger view

For example, 28.Rd2 Qxg3 29.Nc2 Nf4 30.N4e3 Ne5 and white won't survive much longer.

<Brenin> I'm sure your analysis is as accurate as ever but you seem to be answering a different question to what <phantasmagorium> asked.

Jul-03-20  phantasmagorium: Thanks <Brenin> and <goodevans>! Yup.. after 29... Qxg2+ in Brenin's line things appear pretty hopeless for white, and immediate 27... Rxe8 may be even better for Black - though White may survive longer than in the actual game. Easy to say this, though, as I do not actually have to play the game, experiencing time pressure, fear of losing, and hope of somehow winning!
Jul-03-20  goodevans: <morfishine: Bizarre series of moves>

Surprising, maybe, but I don't think any of them are 'bizarre'.

Black played some pretty nice moves in that sequence and whilst several of white's were mistakes they all seem to have some logic behind them.

Here's what I read behind some of white's mistakes:

27.Rd6? saves both the R and the g-pawn. SF reckons it's better to cede the exchange with 27.Ne5.

30.Nc2? Intending to trade off black's B. SF says white should instead give up his Q with 30.Qc2.

33.Ne5? I think white was aiming to trade Ns and create some threats to black's K but after 33...Qxe5 he realised that 34.Qxd5 would be met with 34...Rh2+! Kxh2 (35.Kg1Qxg3+ 36.Kf1 Rh1# ) 35...Qe2+ 36.Kg1 Qg2#.

Jul-03-20  RandomVisitor: After 25.f4. Note that after 25...exf4 white can improve with 26.Qc2. This line transposes with 25...Rbd8.

click for larger view


<43/67 12:35 -1.72 25...Rbd8 26.Qc2 exf4> 27.gxf4 Re7 28.Qf2 Bf7 29.Rxe7 Ndxe7 30.Qg3 Bf6 31.h4 Rd7 32.Be3 Bd5 33.Bc1 Bxg2 34.Kxg2 Nd5 35.Kh3 Rg7 36.Qf3 Qd7 37.Rg1 Nce7 38.Nc2 Qxa4 39.N2e3 Qd7 40.Nxd5 Qxd5 41.Ne5 Qxf3+ 42.Nxf3 Nd5 43.Bd2 Re7 44.Kg3 Kg7

<43/65 12:35 -1.71 25...exf4 26.Qc2 Rbd8> 27.gxf4 Re7 28.Qf2 Bg8 29.Rxe7 Ndxe7 30.Bf1 Nd5 31.Re1 Bf6 32.Bd2 Rd7 33.Bg2 Qd8 34.Rd1 Nde7 35.Be3 Qc7 36.Bc1 Rd8 37.Qg3 Bf7 38.h4 Rd7 39.Be3 Nd5 40.Re1 Re7 41.Kh2 Bg7 42.Bf3 Nf6 43.Kg1 Bd5 44.Bd2 Bxf3

43/72 12:35 -1.41 25...Bf7 26.Qc2 b5 27.Ne3 Nde7 28.axb5 axb5 29.Nf1 Qa5 30.Bd2 Qa6 31.Be3 b4 32.Nc4 Bxc4 33.dxc4 bxc3 34.bxc3 e4 35.Bxc5 Qxc4 36.Bd6 Rbd8 37.Ne3 Qxc3 38.Bc5 Nd5 39.Qc1 Ncb4 40.Nxd5 Nxd5 41.Kh2 Qf6 42.Bd4 Qe7 43.Bxg7 Qxg7 44.Qc5 Nc7

Premium Chessgames Member
  Diocletian: My first choice for Black's move was 25...PxP as in the game, trying to open lines against the weaker king position.

After that I simply recoiled from the complexity of this position. I am forced to take full credit here, the fault lying within the game itself and not in its apprehension.

Premium Chessgames Member
  Yuridmi: Premature thrust 25. f4 is a stinker, leading to major advantage for Black. 25. Qc2 brings back the out-of-play Queen. White may, if he's lucky, later bring back into the fight his out-of-play knight on a3
Jul-03-20  thegoodanarchist: As Rev. Spooner might say, <Puff Tuzzle>
Jul-03-20  Brenin: <goodevans>: Thanks. My response was to <phantasmagorium>'s line 25 ... exf4 26 Rxe6 f3 27 Rxe8 Qxg3 28 Qc2, with a suggested continuation Rxe8 29 Qf2 Qxg2+ giving Black a pawn advantage, whereas my suggested alternative 27 ... Rxe8 28 Kh2 Re2 gives Black a stronger advantage. Sorry I didn't make that clearer.
Jul-03-20  goodevans: <Brenin> Apologies. If I had reread your post and <phantasmagorium>'s I would have seen that.
Premium Chessgames Member
  agb2002: The bishop on e6 protects the knight on d5. However, after 25... exf4 26.Rxe6 Black has 26... f3 and if 27.Rxe8 Qxg3 28.Qc2 (28.Rd2 Rxe8 wins) 28... Rxe8 29.Qf2 Qxg2+ 30.Qxg2 fxg2 wins a pawn at least.
Jul-03-20  RandomVisitor: A final look at the position after 25.f4. Curious is the observation that black does not need to play 25...exf4, he can continue 25...Bf7, 26...b5 etc. Note also the transposition into lines beginning 25...Rbd8.

click for larger view


60/90 9:00:31 -1.76 25...Rbd8 26.Qc2 exf4 27.gxf4 Qb8 28.Qf2 Bf7 29.Rxe8 Bxe8 30.Re1 Bf7 31.Qg3 b5 32.axb5 axb5 33.Ne5 Nxe5 34.fxe5 Nc7 35.e6 Nxe6 36.Qxb8 Rxb8 37.Bd5 Ng5 38.Bxf7 Nxf7 39.Re7 Kg8 40.Kf1 g5 41.Be3 b4 42.cxb4 cxb4 43.Nc4 b3 44.Re6 Rd8

60/93 9:00:31 -1.69 25...Bf7 26.Qc2 b5 27.axb5 axb5 28.Ne3 Nde7 29.fxe5 Nxe5 30.d4 cxd4 31.cxd4 N5c6 32.d5 Nxd5 33.Nxd5 Rxe1+ 34.Rxe1 Bxd5 35.Bxd5 Qxg3+ 36.Kf1 Nb4 37.Qd2 Rd8 38.Re7 Qd3+ 39.Qxd3 Nxd3 40.Bf3 Nxc1 41.Nxb5 Kh8 42.b4 Rd3 43.Bc6 Rd1+ 44.Re1 Rxe1+

<60/97 9:00:31 -1.45 25...exf4 26.Qc2 Rbd8> 27.gxf4 Bf7 28.Rxe8 Rxe8 29.Rf1 Ndb4 30.Qd1 Rd8 31.cxb4 cxb4 32.Be3 bxa3 33.Bxb6 Bd4+ 34.Bxd4 Rxd4 35.Nxa3 Nb4 36.Qc1 Qd8 37.Nc2 Nxd3 38.Qe3 Rd7 39.Rd1 Rd6 40.Qa7 Kg8 41.Qa8 Qxa8 42.Bxa8 Bb3 43.Rd2 Bxc2 44.Rxc2 Nxf4

Jul-03-20  sofouuk: <Curious is the observation that black does not need to play 25...exf4, he can continue 25...Bf7, 26...b5 etc.> thx for this confirmation as b5 was my immediate candidate - with Bf7 first (which I didn't consider, ho hum, logical tho it is) white is just grovelling

never chase a flashy win when a prosaic one will do

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