Puzzle 17
You have a barrel, filled to the top with water, which weighs 150 pounds.
What can you add to the barrel in order to make it lighter?
Puzzle 18
Starting in the bottom left corner and moving either up or right, adding up the numbers along the way, what is the largest sum that can be made?
| 2 | 3 | 5 | 4 | 1 |
| 3 | 2 | 4 | 3 | 4 |
| 5 | 1 | 3 | 5 | 2 |
| 3 | 3 | 2 | 3 | 1 |
| 1 | 4 | 2 | 4 | 4 |
Note: this puzzle is not interactive, and the numbers cannot be clicked.
Puzzle 19
Find an word which is singular, add an 's' and it becomes plural, and add another 's' it becomes singular again?
Puzzle 20
This BrainBashers safe has a rather unusual control panel.
In order to open the safe, you have to press every single square once only, in the correct sequence, ending on the square marked E.
Each square indicates which square to press next, for example, 2U means move up 2 squares and 3R means move right 3 squares.
Can you determine which square you must start with?
| 1D | 6D | 2R | 3R | 3L | 5D | 1L |
| 1R | E | 1U | 3R | 1R | 3L | 2D |
| 2U | 1D | 2L | 2U | 1L | 2D | 1L |
| 2D | 2R | 1D | 3L | 2U | 3L | 1D |
| 1R | 1D | 2R | 2D | 1L | 2D | 1D |
| 3R | 1R | 3U | 4U | 2U | 1L | 1D |
| 2U | 1R | 2L | 1R | 4U | 3U | 4U |
Note: this puzzle is not interactive, and the safe buttons cannot be clicked.