I can't get past the very first level. 5 safe tiles are expected, but apart from the one in the middle everything else seems to be undetermined. Or is there some rule I'm not getting. How am I supposed to think to solve level 1?
2 years ago(+1)(-1)
this is level 4, sorry, i probably should've numbered them but it goes in reading order (green levels -> yellow levels -> red levels) - in addition, the other comments on the page might help you with understanding the logic technique
2 years ago(-1)
"the other comments on the page might help you with understanding the logic technique"
Wait. So the rules in the tutorial screens are not sufficient to solve the puzzle?