t**********s
发帖数: 205 | 1 Put the following numbers into a 4*4 grid so that no single digit appears
more than once in any row, column, or main diagonal.
10,12,13,21,34,38,40,47,50,53,57,64,65,78,89,98 | S*********N
发帖数: 6151 | 2
too simple.
permute gradually.
【在 t**********s 的大作中提到】
: Put the following numbers into a 4*4 grid so that no single digit appears
: more than once in any row, column, or main diagonal.
: 10,12,13,21,34,38,40,47,50,53,57,64,65,78,89,98
| t**********s
发帖数: 205 | 3 谢谢!
小孩子做呢?
【在 S*********N 的大作中提到】
:
: too simple.
: permute gradually.
| S*********N
发帖数: 6151 | 4
single digit or number?
does their position matter?
【在 t**********s 的大作中提到】
: 谢谢!
: 小孩子做呢?
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