Rod Gerstad - Software Products

Sourkoban

Sourkoban is a fun Sokoban program that can show animated solutions. * An easily-used puzzle solving interface * Built-in map sets (around 600 maps) * Unlimited maps via the map set reader * Built-in solutions for all built-in maps * Map editor/creator * Map saver * Animation to demonstrate solutions * Animation to replay your moves * Unlimited undo and redo * Map position save * Map position restore * Map solution reading * Remembers your best solution for each map * Automatic next map modes: next unsolved, next with improvable solution What is Sokoban? In this very popular game, the warehouse keeper (Sokoban) must push boxes to designated positions. The area in which he operates is effectively a maze, and is viewed from above. He can only push a single box at a time. He cannot pull. He cannot climb over boxes. He can only move up, down, left, right. A puzzle is completed when all boxes are in the designated locations. Of course, you, the user, have to choose the route and move the man. It might sound simple and boring, but try it; you''ll soon find how easy it is to get boxes into positions from which they cannot be moved, and how hard it can be to get them to their designated locations. Sourkoban has hundreds of built-in maps to get you started but huge numbers of others can be downloaded and used in the program. Future releases of Sourkoban will include additional maps and solutions. Map Editor Create or edit maps. Save as files, solve them and save your solutions. Then you can send them to friends and challenge them to find a better way. In the editor you type in the standard map symbols and the program displays them as graphical map elements so you can see exactly what it will look like when you look for a solution. The Python source code is included.

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SourGumdrop

Have fun playing Sudoku with SourGumdrop and become an expert. Finish that puzzle that''s got you stumped - just enter the clues and use SourGumdrop to guide you past the problem. Powerful but simple user interface The user inteface minimises the effort required to work on puzzles and lets you concentrate on finding the solution. The solution for a single cell or the whole puzzle can be shown at any stage. You can colour cells and candidates to help identify patterns. Inconsistent or incorrect answers can be shown as you set them and all moves can be undone. Flexible hint methods The hint methods can be configured to reveal carefully controlled amounts of information. Set them so you see only the minimum necessary to make progress, or use them to learn how to recognise patterns. Ask to highlight the candiates that can be removed, or the candidates that form the pattern, or ask to show only the cells involved in the pattern. Request the hint which is easiest to understand or the one which removes the most candidates. Hints can be requested for specific algorithms or for classes of algorithms. Hint algorithms Hidden Singles, Hidden Pairs, Hidden Triples, Locked Candidates, Naked Pairs, Naked Triples, Naked Quads, Xwing, Swordfish and Jellyfish. Internal and external puzzles SourGumdrop''s built-in puzzles are given a difficulty rating depending on the algorithms required in their solution and puzzles can be selected based on their difficulty. Puzzles can be read from files or entered via a built-in editor. SourGumdrop can solve all puzzles. Entered puzzles are checked for internal consistency and for having a single solution. Partially completed puzzles can be saved to files along with their remaining candidates and then tried again later or sent to friends. The appearance of the program can be set using a configuration option and clues can be numerals or letters. The source code is included.

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SourGumdropK

Enjoy playing Kakuro with SourGumdropK and discover new methods. Finish that puzzle that''s got you stumped - just enter the clues and use SourGumdropK to guide you past the problem. * An easily-used puzzle solving interface * Continuously updated combination lists for all clues * Hints for fifteen solving methods * Error checking * Undo mechanism * Built-in puzzles * Puzzle input methods * Difficulty ratings Powerful but simple user interface The user inteface minimises the effort required to work on puzzles and lets you concentrate on finding the solution. For example, at any time a single mouse click will pop-up the possible combinations for any row or column. And they are always up to date, so you don''t have to remember them or use tables. You can colour cells and candidates to help identify patterns. Inconsistent or incorrect answers can be shown as you set them and all moves can be undone. The solution for a single cell or the whole puzzle can be shown at any stage. You can select the hint which is easiest to understand or the one which removes the most candidates. Hint algorithms Simple Filter, Impossible Combinations, Unique intersections, Candidate Bounds, Unique candidates, Possible Permutations, Isolated Necks, Hidden Singles, Hidden Pairs, Hidden Triples, Naked Pairs, Naked Triples, Naked Quads, Xwing Internal and external puzzles SourGumdropK''s built-in puzzles are given a difficulty rating depending on the algorithms required in their solution and puzzles can be selected based on their difficulty. Puzzles can be read from files or entered via a built-in editor. SourGumdropK can solve all puzzles. Entered puzzles are checked for internal consistency and for having a single solution. The appearance of the program can be set using a configuration option. The Python source code is included.

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