1 c4 Nf6 2 Nf3 g6 3 g3 Bg7 4 Bg2 c6 5 d4 0-0 6 0-0
d5
































































This is the clearest equalizing attempt. To remain in
King’s Indian paths with 6...d6 7 Nc3 Qa5 leaves White with the
advantage after 8 d5!
7 cxd5 cxd5 8 Ne5
If 8 Nc3, Ne4 9 Ne5 Nxc3 10 bxc3 Nc6 11 Nxc6 bxc6 12
Qa4 Qb6 13 Ba3 Qa6!= as in Keene-Pfleger, Hastings 1971/72.
8...Ng4
In our game from the 1968 British Championship,
Hartston here played 8...e6 9 Nc3 Nfd7 and equalized without
difficulty. The text is a perfectly valid alternative.
9 Nxg4 Bxg4 10 Nc3 Nc6 11 h3 Be6
































































12 Be3
Here I toyed with the idea of 12 e4 but finally
decided that after 12...Nxd4 13 Nxd5 Bxd5 14 exd5 Qb6 Black even had
the better chances.
12...Qd7 13 Kh2 Rfd8
Of course, with 13...h6 14 Qd2 Kh7 Black could prove
that White’s opening play has achieved nothing positive.
The move played by Black can hardly be criticized, but
it does mean that White’s queen’s bishop has slightly more scope than
its black counterpart and can retain the possibility of Be3-h6,
weakening the dark squares.
14 Qd2 f5!?
































































Very interesting – but over-sharp. I think that
my opponent wanted to seal up the centre and king’s wing and then
redeploy his bishops at e8 and f8, whence they can support an eventual
advance of the queenside pawns.
The drawback to this, naturally, is the resultant
weakening of the dark squares, in particular e5. White’s
following knight manoeuvre is intended to exploit this weakening.
15 Rac1 Bf7 16 Na4 b6 17 b3 e6 18 Nb2 a5?
































































Black would do better with 18...Rac8, hoping for a
general liquidation on the c-file. The text gives him another
weakness to worry about.
19 Na4!
Tying down a major piece to the defence of b6, since
the advance b6-b5 (ceding c5) is hardly to be contemplated.
19...Qb7 20 Bh6 Bxh6
20...Bxd4? loses at once to 21 Rxc6, but 20...Bh8,
retaining a measure of control over the dark squares, deserved
preference.
21 Qxh6 Rdc8
































































Not 21...Nxd4 22 Qe3.
22 Rfd1 Be8 23 Qe3 Bd7 24 Nb2 Nb4 25 Nc4 Qb8
Or 25...Nxa2 26 Nd6 Rxc1 27 Nxb7 Rxd1 28 Qe5, and
Black’s scattered forces can put up no resistance to the penetration
of White’s queen.
26 a3 Nc6 27 Ne5 Nxe5 28 dxe5 Qb7 29 h4
































































Here Donner offered a draw, which was refused.
White has several advantages which should amount to a
win: good bishop, potential control of dark squares, exposed black
king and Black’s weakness on b6. White, on the contrary, has no
weaknesses at all, so Black can only defend.
29...Rxc1 30 Rxc1 Rc8 31 Rxc8+ Bxc8 32 Qg5 Qd7 33
h5 Qe8 34 Bf3 Bd7 35 Kg2 Kg7 36 Qf6+ Kg8 37 Qg5 Kg7 38 Qf6+ Kg8 39
hxg6 hxg6 40 g4 fxg4
































































Played to prevent White’s bishop coming into play via
h5 after White has captured on f5. But now White has a simple
winning plan at his disposal: a triple onslaught by king, queen and
bishop against Black’s weakness on g6.
41 Bxg4 Kh7 42 e3 Bc8 43 Be2 Bb7 44 Kg3 Bc6 45 Bd3
Kh6 46 Kg4 Qg8
































































Here the game was adjourned and I sealed:
47 Qf4+
I then began to analyse the following line: 47...Kg7
48 Kg5 Be8 49 Qh4 Kf7 50 Qh6 Ke7 51 Bxg6, winning a pawn but still
leaving White with some technical difficulties.
At this stage Black resigned (1-0), thus
sparing me the immediate task of finding a more conclusive line.
The more conclusive line in question was later pointed
out by Whiteley, to wit: 47...Kg7 (47...Kh7 48 Kg5 Be8 49 Qh4+ Kg7 50
Qh6+ Kf7 51 Qxg6+) 48 Qf6+ Kh6 (or 48...Kh7 49 Qe7+ Kh8 50 Kg5 Be8 51
Kh6) 49 Qg5+ Kh7 50 Qh5+ Kg7 51 Bxg6! Kf8 52 Qg5, and Black is
helpless.
Of course, had I noticed at the time I could have
forced this line at once with 47 Qg5+!