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REQUIREMENTS.md

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  • 1. The UI will consist of a Classic Sudoku puzzle.
    • a. The UI will disable the squares that have an initial value for a given puzzle. test_load.txt
    • b. The UI will allow the user to enter in a single digit to all initially open squares on the board. Invalid keystrokes will be ignored.
    • c. The UI square will display invalid entries in red (where a duplicate value exists). A wrong answer for a square should not automatically mark the field as red. test_load_invalid.txt, test_load_near_solved.txt
    • d. The UI will set all intersecting squares to yellow when a square is selected.
    • e. The UI will display all the candidate values for the selected square.
      • i. The exhibit below shows that numbers 1, 2, 5, 7, and 8 are still candidate numbers. Numbers 3, 4, 6, and 9 have been eliminated. (See original requirements for the image.)
      • ii. If there is a duplicate value, the corresponding value should display red.
      • iii. If no cells are selected this display will not appear.
  • 2. The UI will allow the user to load data from a file. test_load*.txt
    • a. The UI will be able to support the following format. (See original requirements for the image.)
      • i. Digits represent the corresponding digits.
      • ii. X(s) represent blanks.
      • iii. New line represents the end of a line.
      • iv. Whitespace and empty lines should be ignored. test_load_no_space.txt, test_load_odd_space.txt
    • b. The system will appropriately map the values to the UI squares. test_load*.txt
    • c. The UI will immediately display the state of the puzzle: normal, invalid, and solved. If the puzzle is invalid, the entire UI should be locked. The invalid squares should be marked red. test_load_invalid.txt, test_load_solved.txt, test_load_near_solved.txt
    • d. The UI will prompt the user when attempting to load a modified puzzle board. test_load*.txt
  • 3. The UI will allow the user to save data to a file. It will correspond with the format displayed in 2.a.
  • 4. The UI will default to a blank puzzle. This will allow the user to enter in a puzzle easily. Additionally, the system will provide a way to set a puzzle to a blank puzzle.
  • 5. The UI will indicate if you have successfully solved a puzzle. test_load_solved.txt, test_load_near_solved