SudoCue

SudoCue - Features

 

SudoCue is Freeware. That may set your expectations a little lower than usual. Nevertheless, SudoCue is one of the most powerful sudoku solvers currently available, and it has many features that you will fail to find in any other sudoku program.


Sample screenshot
Key features in a sample screenshot.


Here is a list of the most prominent program features. New ones are added as you are reading this. Join the user forum and you can help decide what will be added next.

  • Very complete set of advanced techniques implemented in the solver:
    • Easy to recognize Last Digit and Full House singles
    • Naked Singles, Hidden Singles in rows, columns, boxes and extra groups for variants
    • Unlocked Singles, using a Pointing Pair to find a Hidden Single
    • Locked Pairs and Triples
    • Locked Candidates (Line-Box interactions) types 1 and 2
    • Naked and Hidden pairs, triples and quads
    • X-Wing, Swordfish and Jellyfish
    • Remote Locked Pairs
    • XY-Wing, XYZ-Wing
    • Aligned Pair Exclusions (APE)
    • Sue De Coq (2-Sector Disjoint Subsets)
    • XY-Chains (simple Forcing Chains)
    • Coloring, Multi-Coloring. Color Trap, Wrap and Wing.
    • Skyscraper
    • 2-String Kite
    • Empty Rectangles (ER) or Hinge
    • Uniqueness Tests 1 through 4
    • BUG (Bivalue Universal Grave) +1
    • Finned X-Wing, Swordfish and Jellyfish
    • Sashimi X-Wing, Swordfish and Jellyfish
    • Almost Locked Sets (ALS-XZ rule)
    • 3D Medusa Coloring. Trap, Wrap, Bridge and Complex. Finds all Double Implication Chains
    • Nishio (a.k.a. templates) catches all single digit patterns
    • Tabling, a.k.a. Forcing Nets
    • Dancing Links (DLX) backtracking solver
    • New techniques are added in each release
  • Helper with a variety of tools:
    • Focus on a single digit, dims other digits
    • Draw cross-hatching lines for a cell of all cells for a single digit
    • Watch candidates for a single digit, disable or enable them
    • Watch candidates for multiple digits, with OR & AND relationships
    • Color candidates for a single digit, with upto available 14 colors
    • Show marks or small digits for remaining candidates
    • Peer filtering, focuses your attention to cells that affect the selected cell
    • Ultracoloring for individual candidates, unique feature!
  • Supports several Sudoku variants (the program can also generate these variants)
    • Sudoku-X
    • Windoku (NRC)
    • Disjoint Groups (Sudoku-DG)
    • Center Dot Sudoku
    • Asterisk Sudoku
    • Clover Sudoku
  • Customizable User Interface
    • Context menu for quick placement or elimination
    • Multiple cell selection to eliminate several candidates simultaneously
    • Select one of the 8 themed screen styles, or use a classic Windows interface
    • Select your own colors for each screen item
    • Select one of 5 grid sizes. All screen elements are adapted to fit the size
    • Choose your preferred coordinate system
    • Select format for copying sudoku grids
    • Select style and arrangement of pencilmarks
    • Minimize to system tray when the boss enters the room
  • Interactive solver log, featuring:
    • Detailed report of human-style solver trail
    • Copy log to clipboard
    • Select log entry and involved cells are highlighted
    • Smart hints from the log, current progress. Candidates and groups are highlighted to illustrate the hint.
    • Step solving assistance helps you learn the game
    • Solve from here option to show how to sover the remaining puzzle
    • Vague hint feature
  • Many input and output possibilities
    • Copy from and to clipboard, givens, filled cells or all candidates
    • Open from file, save to file. Many formats supported, with extended properties
    • Open and browse through large sudoku collections in a single file
    • Get daily sudokus from several websites
  • Generate a random puzzle
    • Choose between 9 types of symmetry or let the program select a random symmetry type
    • Define and name 5 custom difficulty levels for the generator
  • Optimizer will make an existing easy sudoku more difficult by removing unnecessary clues
    • Optimizer can keep the symmetry intact
    • Guaranteed minimal or symmetrical minimal puzzles are the result
  • Sudoku analyzer shows you techniques needed and rating
    • Detailed step analyzer showing the order of techniques
    • Total rating score, solving path width and number of steps
    • Count of every solving technique required to complete the puzzle
    • Useful if you want to know what to look for, without a direct hint
  • Sudoku scrambler makes a puzzle unrecognizable, but solvable in the same way, unique feature!
  • Canonicalize Sudokus to detect scrambled equivalents. unique feature!
  • Intensive support through this website and the user forum
  • This is no abandonware: New releases still coming your way, with improvements and new features
  • Comprehensive User Guide and Solving Guide online
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