Hints only mark cells when the puzzle logic is certain (no more false X suggestions)
Hint popup stays readable above the toolbar
Completed row and column numbers can auto-grey when a line is finished (settings)
Optional setting to auto-X empty "0" rows and columns at puzzle start
Clicking row/column numbers no longer clears X marks that still belong on a finished zero-line
Minimap click centers the view (especially helpful on large boards)
Puzzle browser distinguishes puzzles you've started from ones you haven't
Save slot progress bar refreshes correctly after partial progress
Save slot and stats wording uses grid size instead of calling it a "level"
Fastest times show fractions of a second (e.g. 0.67s)
Error count persists when you leave and resume a puzzle, respects undo, and doesn't double-count the same wrong cell
End-of-puzzle fireworks finish cleanly (last burst fizzles; no blanking the screen)
Thanks to curator feedback that helped catch several of these.