Puzzle Formats - SudokuPad/sudokutools GitHub Wiki

Puzzles are stored in a variety of formats with different characteristics and trade-offs.

Common Formats

• fpuz, used by F-Puzzles
• pppuz, used by PenPa+
• scf, used by Sven's SudokuPad. A compact format for basic puzzles.
• scl, used by Sam Cappleman-Lynes legacy puzzle editor. Used internally by Sven's SudokuPad.

Tool & Libraries

• scl decoder from Daniel Silverstones Linkdoku: linkdoku/puzzleutils
• fpuz to scl transcoder used by Sven's SudokuPad: fpuzzlesdecoder.js