I opened Tier I board 1 and moved the bishop from e2 to f3 to get a new zero-sight clue. That move immediately changed Moves 0→1 and Bonus +20→+17, so the moving-clue idea made sense in play. I could not find an in-game explanation that a move spends three bonus points; a short note beside Moves/Bonus (or in the ? panel) would help players decide when a move is worth spending. This is first-board feedback only; I did not solve it.