*** Level 1 ***

Complete 3 of 5 tasks:

Task 1: Align three circles to allow a stick/plank to "punch thru".
Symbol: Three circles with a stick on top.

Task 2: Colour-stones. 2x2 matrix, 1 well.
Symbol: 

Task 3: Rolling stone. 10x10 matrix.

Task 4: Inverted bits. 8x2 path in-between.

Task 5: Build-a-bridge 'n' press a button.

1 -> 2: Gate

*** Level 2 ***

One large room with two 9x9 pads: One measures the sum the other the product of
the boxes. One weight of two 2x2 pads, indicating which pad carries the heavier
load.

2 -> 3: Staircase

*** Level 3 ***

Colour-stones, 10x10 matrix, 4 wells in each corner.

3 -> 4: Lift

*** Level 4 ***

Lasers! And mirrors!
