Happy Leap Day! Every four years, we make up for the fact that the solar year is about 6 hours longer than the 365 days on the Gregorian calendar. To do so, we simply add an extra day at the end of February. This was actually a major plot point in The Pirates of Penzance.

Today’s puzzle is Leapfrog. The Japanese name is Satogaeri, literally “coming home.” This is the first puzzle I’ve introduced in which you must visualize movement. Move the frogs so that each region contains exactly one frog.

Today, we’re playing Kin-Kon-Kan, a puzzle about placing mirrors. Draw a diagonal line in only one cell within each region.

In a grid divided into groups of three cells, we find three different shapes. Quite simply, fill in the rest of the shapes to complete the grid.

Oh no! Your precious flock is being hunted by wolves! Place fences (lines) along the lines of the grid to create regions that each contain only sheep, or only wolves.

This grid contains a hidden path, beginning with the number 1, and counting upward to 100. Fill in the missing numbers to reveal it.