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Lights On Diagonally (Posted on 2009-07-15) Difficulty: 3 of 5
"Lights Switched" toggles the cell selected and its immediate orthogonal neighbours.
"Lights On Diagonally" does exactly the same except that diagonal neighbours are toggled on or off, ie, if a neighbour is on it is turned off.

Select an "N x N" grid size to display that grid for examination.

Offer a lowest switching sequence for each grid (for the 3 x 3 it takes 5).

See The Solution Submitted by brianjn    
Rating: 4.5000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: to Brianbrianjn2009-07-16 22:17:06
Questionto Brianpcbouhid2009-07-16 14:36:59
re(2): computer solutionCharlie2009-07-16 01:15:48
re: computer solutionbrianjn2009-07-15 21:06:42
Solutioncomputer solutionCharlie2009-07-15 19:01:00
solution for 4x4pcbouhid2009-07-15 14:55:40
solution for 3x3pcbouhid2009-07-15 14:47:58
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