START A NEW GAME?
Same tile, turned over. Five shapes — which way round you set one down decides what it fits against.
Wherever the first sits beside the second, that second tile is overwritten with the third.
Before the first turn you both write the eight lines. Pick a shape from your own bench, pick the colour beside it, then click any empty slot.
It comes out of your stock and stays in the code. Twelve picks each, and no line may be finished all in one colour.
Take one tile from your bank, choose its orientation, click an empty square.
The listing executes top to bottom over the whole screen at once.
If you have an agent, change one tile of one line.
Two of your tiles join into an agent only where their touching edges fit flush. Sitting next to each other is not enough.
Copy any line onto the screen: three tiles in a row, across or down, same shapes and colours as that line.
Reads either way round. Whoever owns two of the three takes it. It must have been standing when your turn began, so they always get one turn to break it.
The machine takes its own turns and stops when the move is yours. ▶ executes the next instruction at the live end, and walks back through the trace behind it. Hold a key to repeat.
The stack descends: every push takes the next address down.