You win when the spot "O" is black. Instructions are in the game, so I will not explain them here. Still, here are a few examples that might help you understand the rules: I will use : V=Black Y=White P=you can switch this spot K=you can NOT switch this spot Situation 0: <-- Starting position ABCDEFG <-- Keys VVVVVVY <-- Dots PKKKKKK <-- OK to switch ? Situation 1: ABCDEFG VYVVVVY PKPKKKK Situation 2: ABCDEFG YVVVVVY PPKKKKK Situation 3: ABCDEFG VVYYYVY PKKPKKK Situation 4: ABCDEFG VVVVVYY PKKKKKP <-- You can make "G" Black : You win ! You might have noticed something : you can ALWAYS switch "A". The hard thing is knowing when you have to switch "A" or not.
Programming by me ! Fun fact: I got the idea from a puzzle at my grandparent's house :-) Fun fact : It takes twice as much time to switch a dot than it took you to switch the previous one. Therefore, if you managed to switch the first spot (congratulations for that), you have solved 1/256th of the puzzle ! Can you beat my personal best for solving this ? (49.231 secs) Thanks for support !