Did you solve it? Are you a match for these match puzzles?
by Alex Bellos from on (#2Z834)
The solutions to today's firelighters
On my puzzle blog earlier today I set the following three questions:
A barracks (the matchbox below) is surrounded by 24 guards (matchsticks) in groups of three, such that when the sergeant drives once around the guards to check that they are all there he sees two rows of 9 guards (the top and bottom rows), and two columns of 9 guards (the left and right columns).