## puzzle

Logikion is a level up from Pandemonion, one of our new interactive sudoku-like puzzles!

A life insurance agent knocks on a door. A woman answers and he tries to sell her a policy. He asks her how many children she has and their ages. She replies: "I have three children, but I will not even listen to your sales pitch unless you guess their ages..."

A mad robot sets off on a journey mindlessly following a set of instructions. Where will it explode?

Which gives a tighter fit: a square peg in a round hole or a round peg in a square hole?

The *n*-th birthday of a very famous mathematician coincides with a year that corresponds to the (*n*+1)st prime number. Who is this mathematician?

It's 21st of October and for puzzle lovers this can only mean one thing: the G4G Celebration of mind. This annual party celebrates the legacy of Martin Gardner, magician, writer and father of recreational maths, with mathemagical events in his honour happening all over the world.

Write the number 2011 using only the digit 4 and the operations of addition, subtraction, multiplication, division, exponentiation, taking a square root and factorial. You can use any number composed of the digit 4, even if it's decimal, so 44 and 44.44 are both allowed. You're also allowed to use brackets.