Grade many puzzles
Grade a file of puzzles in parallel, choose the output columns, and keep full cards as JSON lines.
Check a puzzle before publishing
Ask for the publishing checks (issues), read what they mean, and tune or switch off each check.
Write a variant puzzle file
Write a 6×6 thermo and Kropki puzzle in the sudoku-puzzle format, check it and grade it.
Import puzzles from other apps
Grade puzzles written as text grids, sudokuwiki.org strings, ipuz files or SudokuPad, f-puzzles, Penpa and Logic Masters links, and save them in the puzzle format.
Draw a puzzle
Draw a puzzle file as an SVG picture in the default style, light or dark.