Question: 1. Consider the mini-sudoku puzzle of Figure 10.24, in which each row, column, and quadrant needs to contain the numbers 1, 2, 3, 4. List the branches of a tree that are cut off by the numbers already placed in the mini-sudoku.
2. Here are the clues for the crossword puzzle in Figure
1 Down: the best color (hm. . . , blue, teal, rose, grey, ecru, jade?)
2 Down: has lots of water (sea, tub, bay?)
1 Across: also has lots of water (ocean, sewer, river, storm, cloud?)
2 Across: and also has lots of water (tank, well, lake?)
Use backtracking to find all possible solutions to the crossword, given the potential answers revealed above!
