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lie Half-center lie Half-center has a strong grip on the center has excellent chances of success if he undertakes an attack against an opponent w-ho has an infirm hold (or none at all) on the center; and conversely, a player who has only slight command of the center is only inviting disaster if he attacks a player who controls the center, (Of course, such general rules do not apply to extraordinary positions; but it is -hardly conceivable that a player who does not command the center could arrive at a powerful attacking formation.)

Diagram III shows a powerful attack based on complete control of the center:

(White to move) Nimzovich

(White to move) Nimzovich

111 ' Enevoldsen

(Copenhagen 1933)

111 ' Enevoldsen

(Copenhagen 1933)

White controls the center and his pieces are trained on the K side. Black's forces are divided and ineffectual. There followed: 24 RxKt! BxR; 25 Kt-R5, Kt-Kt3; 26 Kt(4)-B6ch! K-R1; 27 KtxKtPI R-KKt1; 28 KtxRPM KxKt(Kt2); 29 Q-R5, P-B4; 30 PxP e. p. ch, K-B2; 31 Kt-Kt 5ch and wins.

In Diagram IV we see the reverse principle at work.

(See diagram, next column)

The position is about even: White is a bit ahead in development, but Black will be able to occupy the important Q file first. Instead of claying xeasonably.. to dispute the Q file, White begins-an unwaimnted. .attack.;■

(White to move) Capablanca

(White to move) Capablanca

IV Marshall

(Berlin 1928)

IV Marshall

(Berlin 1928)

An embarrassing problem for White: after 17 PxP he will be left with a feeble KP. He has already lost command of his Q4, which is now a hole. If he advances 17 P-B5, then Black operates on the Q file, while White must lose time bringing the decentralized Queen back into the game, and he will have difficulty in protecting the backward KP.

17 Kt-B3 QR-K1

18 Kt-R4

Another piece removed from the center; the threat of Kt-B5 is easily met by Black.

Forcing White to retreat.

21 Q-B2 KtxB

22 RxKt RxP

White is lost, and he resigned 12 moves later.

Now as to the Pawn center, which is important because:

(a) The advance of the KP and QP is usually necessary to assure an adequate development.

(b) The very existence of the Pawn cerrter is a limitation of the opponent's mobility. This is an obvious corollary from the general impossibility ci placing- a- piece on a square cori.tm.lled.

A Simplified Method of

Pairing

By M. E. Zinman When I entered tournament play for the first time, I noticed that the secretary .had a rather cumbersome method of determining who was to play white or black. He had a book which had been imported from Germany which determined the pairings and the white and black players for a tournament consisting of four, five, six, etc., players. If the book was not to be found—which was often!—it was impossible for the players to determine for themselves who was to play the white side. Furthermore, the players themselves often did not understand the system, and if the secretary was not present, the game could not go on.

It occurred to me that there must be some simpler method of determining who was to play the white side. I submit the following scheme. We have used this system successfully for years at the Abraham Lincoln High School. I showed it to Kashdan and ¡he told me that it was a decided improvement over the former method. The method is simply this: Let us say there are ten men in a tournament. Give each a number from 1 to 10. Number 6 plays 4. Which is to play white? Subtract 4 from 6. The answer is 2.

Rule: If the answer is even, the top man (the one with the lower number, that is No. 4) plays white.

If the answer is odd, the top man plays black. Problem: No. 9 plays No. 4. Subtract 4 from 9. Answer 5. The result is odd. Top man plays black.

Mr. Kashdan suggested the following rule which may seem simpler to some ohess players: If both opponents are odd, or if both opponents are even, the top player plays white.

If one opponent is even and the other odd, the top player plays black.

Examples: 4 plays 8: both even. Top man

4 plays white.

3 plays 9: both odd. Top man 3 plays white.

2 plays 7: one odd and one even. Top man 2 plays black.

What To Do About Pairings No more worry about pairings. No long list for the secretary to organizc. No more waiting for slow players to finish. Just play with the by an enemy Pawn. It is this point, generally given so little attention in the manuals of instruction, which forms the subject of the discussion in the next issue.

first man that comes in on the evening of the tournament, subtract your number from his number, determine who is to play white and then go ahead. No more loss of time, incidentally, waiting for the book to show up or for the secretary to come in and determine the first mover. Of course, this does not apply to formal state, national or international tournaments.

Rapid Transit- Tournament For rapid transit tournament, this is a blessing. Recently, we had a rapid transit tournament at the Kings Chess Club in Brooklyn. The play started at 8 P. M. and was still going on when I left at 11:30. With the present system, all players have to wait till the last pair in each round are through. This will be necessary no longer. Play can go on without anyone's 'having to wait. All a person has to do is to challenge the first free player, figure out who is to play white, and then go ahead. If there is an odd player, he rings the bell for five minutes and then asks the first player finishing after that time to take his place.

We learn from Fred Reinfeld that the Y. M. H. A. of New York City has expressed its willingness to hold chess classes for beginners, as well as inexperienced and advanced players. Each course would consist of lectures, demonstrations and play under the personal supervision of Reinfeld, and, it is hoped, appearances by prominent chess personalities.

The fee for each course would be $10.00, covering two semesters and entitling one to such privileges as attendance at first-class concerts, plays, dance recitals and movies at special rates.

As these courses will be possible only in the event of a substantial response, those interested should get in touch with Mr. Reinfeld at 505 Fifth Avenue, New York City.

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