Thursday puzzles: different neighbours (new)
Puzzle 1
Place a digit from 1 to 4 in each black outlined region so that adjacent regions never contain the same digit, not even diagonally. Some regions have already been filled.
0643 Different neighbours 10×10 RS 29-01-15
Puzzle 2
Place a digit from 1 to 4 in each black outlined region so that adjacent regions never contain the same digit, not even diagonally. Some regions have already been filled.