[Event "Clare Benedict Cup"]
[Site "Gstaad SUI"]
[Date "1973.06.25"]
[EventDate "1973.06.23"]
[Round "3"]
[Result "1-0"]
[White "Raymond Keene"]
[Black "Carlo Micheli"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1. Nf3 { Notes by Raymond Keene. } g6 2. c4 Bg7 3. d4 Nf6
4. g3 O-O 5. Bg2 d6 6. O-O c6 7. Nc3 Qa5 {In The King's Indian
Defence I christened this early excursion of the queen the
'Kavalek Variation'.} 8. h3 e5 9. d5 {?! Probably 9 e4! is the
best, e.g. 9...exd4 10 Nxd4 Qc5 11 Nc2! This last move is a
suggestion of the former Cambridge/Sussex player Nigel
Holloway, and promises White much more than the 11 Nb3 of Ree
- Kavalek, IBM 1973.} 9...cxd5 10. cxd5 10...Na6 {? The most
accurate is 10...Bd7! 11 Nd2 Rc8 and only then ...Na6, as in
Keene - Sosonko, IBM Masters 1973.} 11. Nd2 Bd7 12. Nde4 Ne8
{In contrast to the previous variation Black has to shut in
his king's rook in order to defend the d-pawn.} 13. Rb1 b5 {If
Black prods White's centralised knight with 13...f5 then 14
Ng5! followed by an invasion on e6. The point of Black's 13th
move is to hold up a possible advance of White's b-pawn.}
14. b4 Qc7 {If 14...Nxb4 15 Qb3 favours White.} 15. Qb3 h6
16. Ba3 {It was at this point that I began to think in terms
of a knight sacrifice at c5 in order to mobilise a mass of
queenside and central pawns.} 16...Kh7 {Not at once 16...f5 17
Nc5! dxc5 18 d6+ c4 19 dxc7 and the Ra8 hangs.} 17. Rfc1 Qb6
18. Nd1 Rc8 19. Rxc8 Bxc8 20. Rc1 Bb7 21. Ne3 Nac7 22. h4 f5
{At last - the time has come.} 23. Nc5 {! Black must accept
this sacrifice, when a highly complicated position would
arise, probably slightly in White's favour: 23...dxc5 24 bxc5
Qf6 25 d6 Bxg2 26 dxc7 Nxc7! 27 Nxg2 or if 26...Bb7 27 c6
+/-.} 23...Bc8 {After this feeble reply White can win
elegantly by means of the invasion outlined in the note to
move 13. The difference is that White uses c5 rather than g5
as his springboard into e6.} 24. Ne6 Bxe6 25. dxe6 f4 26. e7
Rf6 27. Ng4 Re6 {Now the final combination which demolishes
all resistance.} 28. Rxc7 Nxc7 29. Qxe6 Nxe6 30. e8=Q Nd4
31. Bd5 1-0