On my puzzle blog earlier today I set you the following three problems about this grid:
Solution. Here’s one shape that works.
2. Find the 20 squares that can be made by joining four dots.
Solution: Thinking orthogonally, we get 9 1x1 squares, 4 2x2 squares, and 1 3x3.
Thinking diagonally, we get 4 at a 45 degree angle, and 2 at the lesser angle. Summing them up makes 20 in total.
3. Find a way to connect all 16 points with an acute angle at every point.
I set a puzzle here every two weeks on a Monday. I’m always on the look-out for great puzzles. If you would like to suggest one, email me.
Thanks again to Daniel Finkel for today’s puzzles.