Adrianus M J van den Berg vs Raymond Keene - Amsterdam IBM-B 1973.07.28

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Adrianus M J van den Berg vs Raymond Keene
Amsterdam IBM-B Amsterdam NED round 10 1973.07.28
French Defense: Winawer Variation, Advance Variation 0-1

[Event "Amsterdam IBM-B"]
[Site "Amsterdam NED"]
[Date "1973.07.28"]
[EventDate "?"]
[Round "10"]
[Result "0-1"]
[White "Adrianus M J van den Berg"]
[Black "Raymond Keene"]
[ECO "C18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1. e4 { Notes by Raymond Keene. } e6 2. d4 d5 3. Nc3 Bb4 4. e5
c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. a4 b6 9. Bb5+ Bd7
10. Bd3 Nbc6 11. O-O h6 12. Re1 {A variation on the theme was
the game Hartston - Keene, British Championship, Coventry
1970, which continued 12 h4 O-O 13 Bf4 Ng6 14 Bg3 cxd4 15 h5
Nge7 16 Nxd4 Na5 17 Qd2 Rac8 18 Bf4 Qxc3 19 Bxh6 Qxd2 20 Bxd2
Nc4 21 Bb4 Rfe8 22 Nb5 Bxb5 23 axb5 Nxe5 24 Rxa7 Nxd3 25 cxd3
Nf5 1/2-1/2.} 12...O-O 13. h4 {?! A good alternative is 13
Ba3!?; but as we now Know 13 Bxh6? is unsound: 13...gxh6! 14
Qd2 Kg7-/+.} 13...f5 14. Ba3 Na5 15. h5 Rf7 {!} 16. Nh4 Bxa4
17. g4 {White's opening has been too loosening. If for example
17 Bxc5 bxc5 18 Rxa4 c4-/+.} 17...Raf8 {? Planning an exchange
sacrifice which White declines but better would have been
17...f4!-/+.} 18. Bc1 {! Not 18 gxf5? Nxf5 19 Nxf5 Rxf5! 20
Bxf5 Rxf5 intending ...Be8-+.} 18...Be8 19. g5 hxg5 20. Bxg5
{If 20 Ng6? g4!} 20...cxd4 21. cxd4 Qc3 22. Ng6 Nec6 23. h6
{!? White is thoroughly imbued with the spirit of
aggression. If instead 23 Nxf8 Kxf8 24 h6 gxh6 25 Bxh6+
Ke7-/+.} 23...gxh6 24. Bxh6 Rh7 {! After this move an
extraordinary situation arises in which both sides are
attacking on the kingside.} 25. Nxf8 {! If 25 Bxf8 Bxg6 26 Bd6
Bh5 intending ...Nxd4-+.} 25...Rxh6 26. Nxe6 {!? Intending
26...Rxe6 27 Bxf5 Re7 28 Re3 +/-. If 26 Qc1!? Rh5 27 Be2! (not
27 Nxe6 Nxd4!-/+) 27...Nxd4 28 Bxh5 Bxh5 29 Qg5+ (or 29 Re3
Qxc2 unclear) 29...Kxf8 30 Qxh5 Nf3+ 31 Kf1 Nxe1 with a murky
position.} 26...Bh5 {!} 27. Qc1 Rg6+ 28. Kf1 {? A plausible
move but it allows a blow which poleaxes White's
position. Correct would have been 28 Ng5! Nxd4 29 Kh2 Nf3+ 30
Nxf3 Bxf3 31 Qf4! (not 31 Rg1? Qxe5+ 32 Rg3 Qh8+ intending
...Qh1 mate) 31...Qc7 32 Qxf3 Qh7+ 33 Qh3 Rh6 34 Rg1+
unclear.} 28...Nb3 {!! A murderous shot with multiple threats
...Nxc1, ...Nxa1 or ...Nd2+. If 29 Bxf5 Qf3 intending ...Qh1
mate, or 29 cxb3 Qxd3+ 30 Re2 Qxe2 mate.} 0-1

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Updated: 23 January, 2022
Created: 23 January, 2022