Puzzle 17
Place JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER, into the grid. The sequence will snake around, but cannot go diagonally, nor cross itself.
Puzzle Copyright © Cihan Altay
Puzzle 18
Hidden in the grid below are eight, 7-letter words. Each word begins with the central V and you can move one letter in any direction to the next letter. All of the letters are used exactly once each. What are the words?
| R | E | T | N | R | E | N |
| I | P | M | A | G | I | Y |
| I | L | A | A | A | C | C |
| L | N | A | V | A | C | N |
| A | R | A | A | A | C | A |
| H | N | U | R | I | O | U |
| S | I | L | T | E | D | S |
Note: this puzzle is not interactive, and the letters cannot be clicked.
Puzzle 19
At a picnic recently, I noticed that:
Charles liked biscuits, but didn't like custard.
Mary liked quiche, but didn't like marshmallows.
Brian liked apples, but didn't like biscuits.
James liked chocolate, but didn't like jelly.
Did David like doughnuts?
Puzzle 20
Consider an arrow in flight towards a target.
At any given moment of time, a snapshot could be taken of this arrow. In this snapshot, the arrow would not be moving. Let us now take another snapshot, leaving a very small gap of time between them. Again, the arrow is stationary. We can keep taking snapshots for each moment of time, each of which shows the arrow to be stationary. Therefore the overall effect is that the arrow never moves, however it still hits the target!
Where lies the flaw in the logic?