Rule:
Each puzzle consists of a blank grid with sum-clues in various places.
The object is to fill all empty squares using numbers 1 to 9 so the sum of each horizontal block equals the clue on its left,
and the sum of each vertical block equals the clue on its top.
In addition, no number may be used in the same block more than once.
方便且節省大家一些時間 這邊列出一些各數和的可能
3=1+2 10=1+2+7or 1+3+6 or 1+4+5 or 2+3+5 or 1+2+3+4 18=1+8+9 or 2+7+9 or 3+6+9 or 3+7+8 or 4+5+9 or 4+6+8
4=1+3 12=1+2+3+6 or 1+2+4+8 or 5+6+7 or 1+2+3+4+8 or 1+2+3+5+7 or1+2+4+5+6
6=1+2+3 13=1+2+3+7 or 1+2+4+6 or1+3+4+5
7=1+6 or 2+5 or 3+4 or 1+2+4 14=1+2+3+8 or 1+2+4+7 or 1+2+5+6 or 1+3+4+6 or 2+3+4+5 17=1+2+3+4+7 or 1+2+3+5+6 or 8+9
這個小一就會了...應該很容易吧...呵呵