Tips
 | |
 |
unique Number combination
This meens, that a number which is in a row and a col only can have a unique number because of a combination of its two sums.
Examples:
The possible Numbers for the sum 16 (orange) with 2 empty Fields are 7 and 9.
The possible numbers for the sum 17 (green) with 2 empty fields are 8 and 9.
In this case we see, that in the cross field (blue) only the number 9 can be set.
The Table below shows all unique number combinations in combination which their sums.
| Number of fields | sum | unique combination |
| 2 | 3 | 1,2 |
| 4 | 1,3 | |
| 16 | 7,9 | |
| 17 | 8,9 | |
| 3 | 6 | 1,2,3 |
| 7 | 1,2,4 | |
| 23 | 6,8,9 | |
| 24 | 7,8,9 | |
| 4 | 10 | 1,2,3,4 |
| 11 | 1,2,3,5 | |
| 29 | 5,7,8,9 | |
| 30 | 6,7,8,9 | |
| 5 | 15 | 1,2,3,4,5 |
| 16 | 1,2,3,4,6 | |
| 34 | 4,6,7,8,9 | |
| 35 | 5,6,7,8,9 | |
| 6 | 21 | 1,2,3,4,5,6 |
| 22 | 1,2,3,4,5,7 | |
| 38 | 3,5,6,7,8,9 | |
| 39 | 4,5,6,7,8,9 | |
| 7 | 28 | 1,2,3,4,5,6,7 |
| 29 | 1,2,3,4,5,6,8 | |
| 41 | 2,4,5,6,7,8,9 | |
| 42 | 3,4,5,6,7,8,9 | |
| 8 | 36 | 1,2,3,4,5,6,7,8 |
| 37 | 1,2,3,4,5,6,7,9 | |
| 38 | 1,2,3,4,5,6,8,9 | |
| 39 | 1,2,3,4,5,7,8,9 | |
| 40 | 1,2,3,4,6,7,8,9 | |
| 41 | 1,2,3,5,6,7,8,9 | |
| 42 | 1,2,4,5,6,7,8,9 | |
| 43 | 1,3,4,5,6,7,8,9 | |
| 44 | 2,3,4,5,6,7,8,9 | |
| 9 | 45 | 1,2,3,4,5,6,7,8,9 |