sudoku 451 440 "Root", "groupRB", "groupFields" frameHeader Root 0 0 450 40 true buttonNewGame Root 5 5 100 30 "New game" buttonSolve Root 115 5 100 30 "Solve" rbEasy groupRB 230 13 80 18 "Easy" rbMedium groupRB 295 13 90 18 "Medium" rbHard groupRB 375 13 75 18 "Hard" field groupFields 9 69 30 30 White true "1"