Researchers agree: playing logic puzzles requires your brain. Exactly what's required of it, they can't seem to agree, but it's the general consensus that the net effect is positive. Enter Strimko, a sudoku-like game of logic that involves placing numbers on a grid. Instead of a dry, angular box, however, you get to work with number chains that snake their way around the grid, adding a nice, flavorful twist to the familiar concept.