Page 1 of 1

6 by 6 puzzle

Posted: Fri Nov 17, 2006 8:56 pm
by nj3h
I came across one from a newspaper that for the time being has me stumped. I am probably missing something obvious. Anyway, the puzzle is:

..4 ..6
5.. ...

.4. .23
23. ...

... ..4
4.. 1..

The above spacing is to highlight where the 6 boxes are in the puzzle. Of course, row and column rules apply.

Any thoughts?

Posted: Sat Nov 18, 2006 12:42 am
by Ruud
Tricky little puzzle.

A few locked candidates to start with,
then Empty Rectangle for digits 2 and 3,
then nothing...

...until you use higher powers. There are a lot of ALS in the grid.

Let's use some of them:

Code: Select all

&#40;1&#41;r2c3-&#40;1=26&#41;r12c2-&#40;6=52&#41;r6c26-&#40;2=1&#41;r2c6-&#40;1&#41;r2c3 => r2c3<>1
&#40;5&#41;r56c5-&#40;5=12&#41;r1c5|r2c6-&#40;2=5&#41;r6c6-&#40;5&#41;r56c5 => r56c5<>5
naked pair &#40;36&#41; in r56c5
After that, you could investigate r3c1.

Ruud