English 16: free puzzle app for iphone, ipad Review

In 1990 I bought 2 books of Sam Loyd's puzzles. This puzzle was in one of them. The object is to slide tiles 1 square at a time, or jump tiles one square at a time to interchange the colors.

I remember spending a good 30 minutes looking for the fastest solution.

This version is free and, hey, you won't have to collect bottle caps to do this puzzle.