Prism Pegs
Polish every ring in a one-slot mirror, then solve the destination faces.
How to play
Move one TOP ring at a time. On A, B and C, a larger ring cannot land on a smaller ring, and every arrival flips its sun/moon face. The fourth MIRROR peg holds exactly ONE ring of any size: arriving there polishes the ring and DOES NOT flip its face. Leaving the mirror for a normal peg flips as usual. Every ring must be polished. Finish on C, bottom to top:3 sun,2 moon,1 sun. Arrival-face previews appear on every move button. Unlimited Undo restores a transfer including polishing and face; no timer or loss. Try to solve with fewer transfers.
About this original study
One compact handcrafted scenario inspired by a documented mechanic, not a clone or a complete remake. Original interface and rule implementation; no source artwork, code, music, accounts or purchases.