Offer a two-tap alternative to complex dragging
The practical problem
Dragging between distant grid cells requires motor precision and may conflict with touch scrolling. A simple select-then-target mode can make the same game playable.
Implementation protocol
Allow a tap to select a source piece and a second tap to select its destination. Show a clear selection outline and permit Escape or Cancel.
Worked scenario
Moving a tile from A2 to D2 should obey exactly the same collision and movement rules whether performed by drag or two-tap selection.
What could go wrong
If tapping already inspects a tile, explain when the interface is in move mode.
Acceptance criteria
Avoid overlapping gestures with ambiguous outcomes.
Source material and evidence boundaries
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