Mmtm m

m mta m tm mm m ┬╗mm m mm mm m&m M m once more stood the test excellently. They have had to put up with no inconveniences, but have made themselves felt in all directions.

One variation should be mentioned, namely 19.14, in order to keep the d-pawn at d3. The continuation might have been 19...Bc5+l, and White has after all to submit to playing 20.d4, and after 20...Bf8 21 .e5 we will have arrived at the position in the text.

The White Bishops have small possibilities of action.

21 ...a3 at once would have been more precise.

22.Qc2 a3 23.Bc1

It was essential to interpolate 23.Bf1 here.

This interesting combination should begin with 23...Nc5! Instead of 23...Bc5. The difference will soon be manifest.

Every free moment is used to the strengthening of the position on the Queenside.

19.d4

This move must be credited to Black's strategy in overprotecting e5. The valuable diagonal a1-h8 is now obstructed, but by no other means could the thrust e5 have been effected. Those engaged in this overprotection have

24.Rxc5 Nxc5 25.dxc5?

The interpolation here of 25.Bf1 (which would not have been possible if Black had played 23...Nc5) would have yielded him an extra tempo for the endgame.

We can see by his face that White's a-pawn is marked for death.

26.Nb1 Qxc5+ 27.Qxc5 Rxc5 28.Bxa3

26.Nb1 Qxc5+ 27.Qxc5 Rxc5 28.Bxa3

Or 28.Bd2 Rc2 29.Bf1 Rxa2 30.Bxb4 Rg2+! and wins (On 31 .B or Kxg2, comes 32...a2). If White had one tempo more (see note to move 25), this combination would have been impossible.

28...bxa3 29.Nxa3 Ra5 30.NC2 Rxa2 31.Nd4 Rb2 32.15 Nc7 33.fxe6 Nxe6 34.Nc6d4 0-1.

Game 39

Illustrates overprotection and also the problem of the isolated d-pawn.

Three Swedish Amateurs-Nirnzowitsch

Played in 1921

4.f4 would have been better.

With this exchange, which is anything but obvious. Black plans to win the square d4 for his Knight.

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