Nested box puzzle from Machinarium. You have a grid containing some boxes, which have 2 different sizes and 1 open side. You control a marker that can move, enter/exit boxes and push them while inside them. 1 small and 1 large box have different colors. Insert small such box into large such box to solve puzzle.
Stand on FFC, face the given direction and press EX1 to move the marker.
1. Set up 16 box combos. Rows - small, large, small trigger, large trigger. Columns - open in up/down/left/right directions.
2. Set up 2 more combos. 1 for marker, 1 for empty space.
3. Build the puzzle. Only 1 small trigger box, 1 large trigger box and 1 marker combo must exist in the screen.
You can use solid combos and No push block flags as obstacles and puzzle boundaries.
4. Place invisible FFC with script at control panel.
D0 - ID of Combo used for marker.
D1 - ID of top left combo in box setup.
D2 - ID of empty space.
All combos in the puzzle are removed at the start. Graphics at runtime are rendered entirely by script.