Tuesday, August 15, 2006

Cross Wits With a 7-Year-Old



My son, a math genius much smarter than his father, periodically pesters Papa for puzzles. So yesterday I created for him this CrossNumber puzzle, in which the empty squares must be filled with the proper numerals. I'm proud to report that he solved it on his own, with occasional help from Google. (His mother had removed IE and Flock from his PC as a protective measure, but he has since figured out how to RDP into my PC whenever he needs a browser).

Across


1 (2+7) * (475 - 468)
3 Declaration of Independence
7 (10-1)2 - 12
8 11 in base 3
9 x
÷ x

10 79, in base 8
11 2*x2 = x+1
12 Binary: 110 - 101 = ?
14 Roll dice 72 times. How many 7's?
15 US Route near home
16 The power of Googol
17 Crosses Stanford Linear Accelerator
18 -3, 0, 3, …





Down


1 0, 2, 4, …
2 Days in April
3 Your age, to a computer
4 1st successful commercial jet
5 23 * 32
6 I am my name
10 Emperor Henry V invades Italy
11 Two minutes
13 James Bond's successor
14 Meitnerium
16 Pawns on board


A solution grid is available upon request.

3 comments:

  1. I just saw the movie "Wordplay" (in theaters in SF) about crossword puzzle fanatics...featuring Will Shwartz, editor the the NYT crossword puzzle. You and your son should go see it.

    ReplyDelete
  2. Anonymous11:49 PM

    ok, i got it... er well, i got most of it... 7?

    ReplyDelete