The New Sudoku Players' Forum

[russwinter]

It's only Saturday, but the Sunday puzzle gets delivered a day early to those of us with home delivery. It's rated "hard," and I got a multiple number of possible solutions.

In the 5th and 8th rows, I found that positions 2 and 3 can be either:

4 2 6

8 6 2

or

4 6 2

8 2 6


Also 1, 3 & 9 can be placed a couple different ways in rows 1, 3 & 9 (coincidence?) so that either of two other solutions work.

Did anyone else find the same thing?

I realize these puzzles are supposed to be computer-generated so that there's only one solution for each puzzle, but it looks to me like there are 4 solutions to this one.

[Shazbot]

can you provide the original grid?

[russwinter]

This is the original grid:

xx8 2xx xxx
x1x xx7 xxx
x5x xx4 x76

37x xxx xx2
4xx 5x8 xx1
9xx xxx x43

14x 9xx x3x
xxx 7xx x1x
xxx xx1 6xx

Here's 2 of the solutions I got:

798 216 354
614 357 928
253 894 176

375 149 862
426 538 791
981 672 543

147 986 235
862 753 419
539 421 687

OR:

798 216 354
614 357 928
253 894 176

375 149 862
462 538 791 Note that the 2 & 6 are switched
981 672 543

147 986 235
826 753 419 Note that the 2 & 6 are switched
539 421 687

There's a couple other solutions I got as well. I'm interested to hear what others found....

Russ
Washington DC

[angusj]

Here's 2 of the solutions I got

I'm afraid they're both invalid since I can see more than one 6 in column six in both your solutions. (However, the starting grid you've given does have only one solution.)