JT Onkoud 50 theme

H#2-7 theme. In all phases, all White moves with the same move number are played on the same line, and all Black moves with the same move number are played on the same line. A line can be a file, rank, or diagonal. At least two solutions are required. The idea may be doubled.

If the moves with the same move number are played on the same square, the theme is realized simultaneously on a file, rank, and diagonal.

⧖ This is the theme of the Abdelaziz Onkoud 50 Jubilee Tourney. See also Onkoud-50 JT Award.

Note: In Helpmate Analyzer, due to the large number of random problems matching theme conditions, at least three phases for the theme are required.

Onkoud, Abdelaziz

Gravure, 2012

2nd Prize