RULES: Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 outlined box.
Wherever 2 odd and 2 even digits form a 2x2 checkerboard pattern, a Battenburg marking is given. If there is no marking, the above pattern is not allowed.
What a beautiful construction. Really enjoyed unraveling tye solution!. 15 m may be a bad timing but it was v satisfying.
ReplyDelete9 min. Very nice !
ReplyDelete