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par—
beamlost
Click a cell to bolt a mirror to it: slash, then backslash, then bare rock again. The lamp fires east.
Bench
Arrow keys walk the cursor, Space cycles a mirror under it.
Every mirror costs the same, so the puzzle is not money — it is geometry. A slash mirror turns east to north; a backslash turns east to south. The par figure is not a guess: the board is solved as a graph over cell-and-heading states, and the cheapest route is what a perfect rigger would spend. Match it, or beat it if the solver missed a trick. G reveals the verified route and what it costs.