Nutstack Workshop is a bolt sorting puzzle where a tap selects a bolt and another tap chooses where its top nuts should go. A legal move can transfer a consecutive group of the same color, as long as the destination is empty or has that color on top and enough room. Full, single-color bolts are complete; organize every active bolt to clear the level. Some puzzles hide nut colors, so moving the visible pieces also reveals information.
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Yes. A consecutive same-color group on top can move together, up to the target bolt’s free capacity.
On an empty bolt or one whose top nut has the same color, if it has enough room for at least part of the group.
A full bolt of one color is sealed as a completed stack.
Some levels conceal colors. Reveal them by making legal moves with the visible nuts.
Undo uses a tracked supply. When it reaches zero, choose the free refill to add five uses, then tap Undo again to reverse a move.
With no +Bolt tokens left, a free claim adds or extends the spare bolt by one segment. It creates room; it does not solve the puzzle for you.
