Week 19-25, May, 2007 Puzzle 388: Wilfred Whiteside. Please take a look of his splendid results for this hard puzzle! Puzzle 401: J. K. Andersen, Farideh Firoozbakht & Giovanni Resta Conjecture 53: Werner D. Sand Posted on Saturday, May 26, 2007

Week 12-18, May., 2007 Puzzle 400: J. K. Andersen, Anton Vrba, Farideh Firoozbakht, J. C. Rosa. Conjecture 52: Maximilian Hasler. Posted on Friday, May 18, 2007

Week 5-11, May, 2007 Puzzle 399: J. K. Andersen, Giovanni Resta. Conjecture 53: Patrick Capelle Posted on Saturday, May 12, 2007

Week up to May 4, 2007 Problem 27: J. K. Andersen. Conjecture 53: Giovanni Resta, Phil Carmody, Kermite Rose, Bernardo Boncompagni, Anton Vrba & Farideh Firoozbakht. Posted on Friday, May 4, 2007