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The Flank Formations: There are only two distinct groups of formations in this classification. The note of similarity in each is disregard of center control for a number of moves. There are several formations not presented here which must be classified as flank formations, arising notably from the Dundee. These omitted formations are so varied in characteristics that the author feels they should [be studied] individually by the student, after the understanding of the basic formations has developed.

A -- The Kelso Cross Family: 10-15 23-18 12-16.

In this group of formations, both sides occupy the center squares simultaneously, but there is no attempt by either side to gain complete center control. The student should carefully note that counterpart positions develop in almost every illustration.

Example 12, the Kelso Cross: 10-15 23-18 12-16 21-17 9-13 24-20 16-19 17-14, and the positions are evenly balanced.

Example 13, the Edinburgh Cross: 9-13 23-18 10-15 27-23 6-10 24-20 5-9 28-24 12-16 (if 10-14 then 23-19 favors white) 21-17 1-5 25-21 8-12 32-28 3-8 30-25 favors white slightly.

Example 14, the Edinburgh Lassie: 9-13 24-20 10-15 28-24 5-9 23-18 6-10 21-17 1-5 25-21 12-16 27-23 8-12 32-28 3-8 30-25 forms example 13 at the last move.

Example 15, the Edinburgh Lassie: 9-13 24-20 10-15 28-24 5-9 23-19 15-18 22-15 11-18 19-15, a strong development for white.

Example 16, the Edinburgh Cross: 9-13 23-18 5-9 24-20 10-14 (10-15 leads to examples 13 and 14) 18-15 11-18 22-15 14-18 (weak, 7-10 or 7-11 is better) 19-15 forms example 15, at the last move.

Example 17, the Edinburgh Lassie: 9-13 24-20 6-9 27-24 10-15 23-18 7-10 26-23 10-14 23-19, and the positions are balanced.

Example 18, Strickland's Cross: 10-15 23-18 7-10 26-23 10-14 23-19 14-23 19-10 6-15 27-18, and black may have a slight edge.

B -- The Regular Denny Family: 10-14 22-17 7-10.

The primary characteristic of development, in this group of formations, is the movement of three pieces in succession on the flank or double corner side, threatening the double exchange by 14-17 (or 19-16 in some cases) in reply to 25-22.

Example 19, the Regular Denny: 10-14 22-17 7-10 17-13 3-7 (note the development of three pieces on the flank) 25-22 14-17 (the characteristic two for two exchange) 21-14 9-25 29-22 11-15, and the position is almost evenly balanced.

Example 20, the Denny Book: 10-14 23-19 11-16 26-23 (still another formation is 27-23 16-20 31-27 7-10, favoring black strongly) 16-20 30-26, about even.

Example 21, the Edinburgh Book: 9-13 23-19 11-16 16-20 30-26, about even.

Example 22, Irregular: 9-14 22-17 5-9 17-13 1-5 25-22 14-17 21-14 9-25 29-22 11-15, white is strong.

Example 23, Irregular: 9-14 22-17 6-9 17-13 1-6*, same as example 22.

Example 24, the Denny Second: 10-14 24-19 7-10 28-24 11-16 32-28 16-20 22-17 9-13 25-22 5-9 19-15, white is very strongly situated.

Example 25, the Denny Second: 10-14 24-19 11-16 28-24 7-10 32-28, same as example 24.

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