Aquarium Brown [kof-027]

Each piece is consisted of two cubes, which has some fish on its faces.
The problems are to make a fish tank with no imcomplete fish.

Main challenge is to arrange the four pieces to make a cube 2x2x2 with one fish on each face.
Extra challenge is to make some shape below (on the right side) without the condition of one fish on each face.

package size: 40*40*55mm
design / Kohfuh Satoh, 2006
production / Kofth, 2025