GGbet

Three constraints, fifteen levels and a row of bells. The bells hang side by side with a rope between each neighbouring pair. Tap a rope and the two bells it sits between swap places, and the new arrangement rings out as a row. That single move is all you are given: swap a pair, hear the row, swap again. Reaching the target row would be easy if you could wander towards it. You can't. There's a move limit, you may never ring the same row twice, and certain rows are chalked up as forbidden before you begin — ring one of those and the attempt ends there. So the way from the opening row to the target has to be planned as a route rather than stumbled into. Each swap is a step through a shrinking set of arrangements, and one careless detour can leave you with moves still in hand and nowhere legal left to spend them. The early levels give you room to feel the swap out and get a sense of how an arrangement travels. Later ones close the gaps until there is effectively one path through, and finding it usually means working backwards from the target as much as forwards from the start. Quiet, orderly and entirely about thinking a few swaps ahead — a puzzle you solve with one finger and a little patience.

Giralda Hit V2