Crossfigure Puzzle # 6

A challenging puzzle in which all the clues are simple numerical expressions. You will find that for solving the puzzle logic and ingenuity are more important than mathematical skill.

Crossfigure Puzzle

Across

 1 1 down minus 177
 4 1 across plus thirty-one
 7 9 across plus twenty-nine
 8 Five times 27 across
 9 Four times 18 down
10 11 across minus thirty-six
11 5 down plus forty
13 17 across plus 3521
15 13 across minus 800
17 1 down plus twenty-one
20 6 down minus ninety-nine
23 16 down divided by eight
24 A square number
25 24 across times three
27 A square number
28 A prime number
29 Two times 8 across
30 17 across minus ninety

Down

 1 2 down times 28 down
 2 A prime number
 3 Three times 8 across
 4 1 across minus 624
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