Not as Easy as ABC
Fill every row and column with each letter once plus one blank, using edge index clues.
Controls
Fill every row and column with each letter from A up to the grid size minus one, plus exactly one blank. A clue such as A2 means A is the second non-blank letter seen from that side. Tap a cell to cycle blank → A → B → … . Outlined cells are fixed.
Logic · Numbers · Deduction · Grid
Brain training · PuzGo