Every puzzle in this app is a 27–28 clue grid with exactly one solution — verified in advance, so there's always a logical path through, never a guess required. "Easy" means exactly that: every single puzzle in this set solves using nothing but Naked and Hidden Singles — spot the one digit that fits a cell, or the one cell left for a digit in a row, column, or box, and repeat until the grid is full. Zero Pairs, zero chains, zero guessing. It's the gentlest possible starting point — every other difficulty in this app builds up from here.
Import a puzzle
Paste 81 numbers, in almost any format: comma- or space-separated, a 9×9 grid, or one long string. Use 0 or . for empty cells — box-drawing separators (| and ---+---) are fine too.
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