I recently received a whoel slew of
solutions, evidently from a single class (or a single teacher) in
Australia. The solutions are similar, so I won't write them all, but
let me acknowledge the authors: Gary MacPherson, Elise Bell, Paul
Wallace, Tracey Davidson, Laura Hendry, "Kathryn," Julie Rice, and
Geoffrey Harris. Of course, I'd have loved to see the reasoning.
Now, while they were similar, they were not
identical. Here is one kind, Elise Bell's:
Congratulations to Bryan; I take it that
since the teacher wrote, the students have no access to e-mail. And I
trust that Bryan's work was somehow informed by the group work that
From what I can read into this solution, a
really important part of the strategy was realizing that sometimes
you can figure out several answers from one clue (or a set of clues).
It may not be obvious how the other clues fit in. At that point, you
can just plug in the various possible solutions you already have and
eliminate the ones that don't work.
Sometimes you can eliminate all but one, and
you're done. Other times, that work helps you see how all of the
clues fit together.