Lyn Fox - Vulpine Artist

16 Coins

Sixteen Coins

Begin with 16 coins arranged in a 4 x 4 square with all coins heads side up. Your objective is to flip over the coins so that they are all tails side up within six moves.

A "move" consists of choosing a line of four coins horizontally, vertically or diagonally, and then choosing three coins in that line and flipping them (you must flip all three.)