Erasable Games Weblog

(Sudoku in words and pictures)

Entries tagged with 'Akari Puzzles'

Akari (Light Up) On Sudoku

Sunday, December 23rd, 2007

Akari (Light Up) On Sudoku

In the Western World, December is often host to festivals of Light. I’ve adapted a puzzle called Akari or Light Up which was originally invented by Nikoli in 2001. His site provides a tutorial for how the rules of the game interplay. Sample puzzles may be found on Nikoli’s Website, which vary in size from 10 x 10 to 36 x 20.

The puzzle shown in the cartoon is fairly easy to solve. It’s a little reminiscent of the old computer game called Minesweeper. Minesweeper offered adjacency clues which included the boxes diagonal to as well as number of exposed sides. When you incorrectly clear a space that was a mine, a rather startling bang! terminates your game. No sound effects for Akari, however.

The Wikipedia article for Minesweeper has a fascinating discussion about patterns and solving strategies by analyses of single and multiple boxes and mine probabilities. Board difficulty measurements are also detailed.

Some online sources of puzzles include: (online player, pdf puzzle generator), 100 Free Akari Downloadable Puzzles at (zipped pdf files), and for online games of varying difficulty.

Have a most enjoyable holiday! I’m glad to enlighten you or at least lighten your mood.