Permalink Submitted by bskbri on Thu, 01/16/2014 - 23:10.

The crossnumber sudoku in the instruction booklet is taken from the instruction booklet of WSC 2007.

I can offer to start solving the cells with the most constraints. In the bottom left 3x3 box of the sudoku, there are four crossing numbers.

The number in the first column cannot be any one of 2431, 4316, 4931, 7168, 8491 and 8651, because there are no numbers starting with 1 or 3.

For a possible 2637, 6517 or 8627 in the first column, we will have a 7168 across with repeating digits in the 3x3 box.

For 6798 in the first column, 7168 will be across and then there will be no possibility for the across number starting with 8.

For 8495 in the first column, 5876 will be across and then there will be no possibility for the across number starting with 4.

For 8629 in the first column, 9518 will be across and then there will be no possibility for the across number starting with 6.

For 9518 in the first column, 5876 will be across with repeating 8 in the box.

Therefore the number in the column is 5876. The across number starting with 8 can only be either 8491 or 8495, since we already have a 6 in the box. 8495 needs another crossnumber ending with 5. So the across number is 8491. The across number starting with 6 is 6517. The number in the third column is 4931.

The remaining part of the puzzle is still enjoyable to solve :)

## The crossnumber sudoku in the

The crossnumber sudoku in the instruction booklet is taken from the instruction booklet of WSC 2007.

I can offer to start solving the cells with the most constraints. In the bottom left 3x3 box of the sudoku, there are four crossing numbers.

The number in the first column cannot be any one of 2431, 4316, 4931, 7168, 8491 and 8651, because there are no numbers starting with 1 or 3.

For a possible 2637, 6517 or 8627 in the first column, we will have a 7168 across with repeating digits in the 3x3 box.

For 6798 in the first column, 7168 will be across and then there will be no possibility for the across number starting with 8.

For 8495 in the first column, 5876 will be across and then there will be no possibility for the across number starting with 4.

For 8629 in the first column, 9518 will be across and then there will be no possibility for the across number starting with 6.

For 9518 in the first column, 5876 will be across with repeating 8 in the box.

Therefore the number in the column is 5876. The across number starting with 8 can only be either 8491 or 8495, since we already have a 6 in the box. 8495 needs another crossnumber ending with 5. So the across number is 8491. The across number starting with 6 is 6517. The number in the third column is 4931.

The remaining part of the puzzle is still enjoyable to solve :)

Salih Alan

## thanks a lot

thanks a lot

## thanks

Your question is very nice. thanks