The latest addition to my puzzle collection, Galaxies are elegant puzzles in which symmetry forms an essential component. You are presented with a grid containing circles, in seemingly random positions. You fill in the lines of the grid to form an island, or galaxy around each circle. The galaxy shapes must be rotationally (or 180° […]

Eighty-seven year old puzzle constructor Yochanan wrote to tell me he has posted scans of his hand-made crossfigure puzzles. You’ll find 80 puzzles, divided into 4 collections here. I find these puzzles to be excellent. However, because they are scans from a book, it helps to zoom in on each page to make the puzzles […]

Apparently, “Kennie” was a little too close to “KenKen” for Bob Fuhrer, who sent the following missive this morning: Dear Mr. Bumgardner, I am President of Nextoy, LLC and KenKen, LLC, which owns and controls all rights in the KenKen® and Kendoku® brands of mathematical logic puzzles. I have recently learned that you are publishing […]

Apparently, the paltry few KenKen puzzles published in the Times weren’t enough, so a number of you wrote to me asking for KenKen puzzles. I’m publishing a new kind of puzzle called a Kennie. It’s similar to a KenKen, but has a few minor differences. Kinda like those chocolaty sandwich cookies that aren’t exactly like […]