Cross colored floor tiles using a robot that can change color at white mixers.

Paint every open floor tile with a roller that cannot stop midway.

Collect parcels along a route with limited energy and single-use chargers.

Roll a numbered die through floor restrictions and finish with the right face on top.

Open and close colored bridges while searching for a key and exit.

Trace an unbroken number route with a fixed length and target total.

Repair seven-segment arithmetic by moving exactly one match.

Reorder numbered wagons using a main track and two short sidings.

Complete a colored drawing by reflecting it across a vertical mirror line.

Compare two pixel mosaics and mark every changed tile.

Align linked clock hands whose connections turn other dials with them.

Exchange two groups of frogs using forward steps and single jumps.