Eight hateful sequences -- Building barrycades and constructing corrals -- Limited placements of polyominoes on rectangles -- Polyominoes on a multicolored infinite grid -- A chess tribute to John Horton Conway -- Some new combinatorial games -- Factor subtractor -- The mathematics of Septoku -- Thirty years of computer cubing: The search for God's number -- Nim-like games: An ancestry -- Triangles of absolute differences -- Generalization of a puzzle involving set partitions -- A generalization of Retrolife -- Coins of three different weights -- Rubber bandzzles: Three mathematical puzzle-art challenges -- Comet! -- Developing Topsy Turvy and Number Planet -- Coin-flipping magic -- Three puzzle fonts