Eureka!, Page 8

Cast Donuts puzzle (2012) from the Hanayama luxury series. Separate the two donut-shaped rings and put them back together.

Cast BOX puzzle consists of a cube and a ring locked inside it. Your task is to remove the ring from the box and reassemble the puzzle.

Hanayama Cast Huzzle — Harmony. An elegant metal brain teaser with interlocking arch shapes. Level 2 (out of 6).

V-Cube 3x3x3 in black. Material: plastic. Difficulty: 3 out of 6. Challenge: scramble the colors and restore them to their original positions.

Hanayama Cast Delta is a beautiful symmetrical puzzle made of three parts. Delta truly stands out for its simple yet elegant appearance — and its surprisingly tricky solution.

Two sturdy G-shaped pieces of Hanayama Cast G&G appear at first glance to be loosely connected. Look closer — and you'll discover they are more thoroughly interlinked than you...

The challenge of Hanayama Cylinder is to separate it into five pieces. At first glance it seems simple — just unscrew it — but there is no external way to unscrew it!

The challenge of Hanayama Twist is to separate it into two pieces. Use the grooves on the surface to find the correct path to solve this elegant metal puzzle.

Two bolts and four nuts — at first glance it looks like a pile of spare parts, but looks deceive. This puzzle contains a clever trick preventing you from taking it apart.

Hanayama Cast Huzzle — Galaxy. A cosmic-inspired metal brain teaser with star-shaped interlocking pieces. Level 5 (out of 6).

Hanayama Cast Huzzle — Keyhole. A metal brain teaser in the shape of a keyhole. Level 1 (out of 6).

Hanayama Cast Huzzle — Hexagon. An elegant metal brain teaser in hexagonal form. Level 3 (out of 6).