RT Constantin Puzzle:Tough Measures logic game

This logic puzzle from the Constantin Puzzle series is a challenge for anyone who enjoys mechanical brainteasers. It consists of two bent metal bars that initially look tangled and twisted. With the right sequence of moves, however, they can be fitted into a square frame.

Solving it requires you to work out exactly when to turn each bar and which part belongs at the top and which at the bottom. Every piece in the series calls for a different way of thinking, so each new puzzle demands a fresh approach.

The game suits fans of demanding problem-solving who enjoy testing their spatial reasoning and trying out systematic solutions.