Normal sudoku rules apply. The 3x3 box borders divide a blue line into segments, each of which has the same sum. eg r4c8+r4c9 = r3c9+r2c8+r1c8. Different lines may have different sums. Along a thermometer, digits must increase from the bulb end.
Normal sudoku rules apply. The 3x3 box borders divide a blue line into segments, each of which has the same sum. eg r4c8+r4c9 = r3c9+r2c8+r1c8. Different lines may have different sums. Along a thermometer, digits must increase from the bulb end.