# Puzzle page

Issue 29March 2004

## Breaking up can be sweet...

I can't wait for Easter to get here, so I have bought myself a block of chocolate to tide me over. It is a normal rectangular-shaped block with 5 rows, and 4 pieces of chocolate to a row, making 20 pieces of chocolate ready for the eating. I want to eat all of it right now, but I want to savour each piece.

What is the least number of clean snaps necessary to break the block of chocolate into the 20 individual pieces?

What about for a block with *n* rows of *m* pieces?

If you are stumped by last issue's puzzle, here is the solution.

For some challenging mathematical puzzles, see the NRICH puzzles from this month or last month.

Solution link:

Breaking up can be sweet solution