GeekDad Cryptography with the kids

July 2, 2008 at 1:39 pm 1 comment

Rainy day challenge to the kids: solve the code, keep the treasure

R SZEV SRWWVM GSV GIVZHFIV RM GSV TFRGZI XZHV YVSRMW GSV XLFXS RM GSV UZNROB ILLN

I explained the basics of frequency analysis and let em go.

Not only did they solve the clue within a half hour (and claim their prize), they presented me with their own encoded clues for a treasure hunt of their own design!  Wow, that was harder than I expected, expecially since the messages were almost too short for any sort of meaningful frequency analysis.

See how well you can do.

The first one was a stumper – and it contained an error which added to the fun:

3:2,3.3.1,3:5,4.4.5.4,3:4,3.2.5,2.1.4,3.1,3:
3.3,5:4,5.2,3.3:4,5.4,3.1.4,4.2,3:

And this one was pretty tricky too:

Today you stumble upon a secret code that could lead to treasure

To whoever finds this,

26,21,24,- 25,18,6,6,- 3,18,7,2-20,16- 14,10- 10,4,16- 23,10,14,17,16- 9,21,15,19,18,7,17-21,24,10

Good luck

Other codes with kids online:

http://blog.wired.com/geekdad/2007/05/gshiw_jsv_omhw_.html

 

Advertisements

Entry filed under: geekdad.

How I Found Keeping Found Things Found Innovation in the cloud; raining blood

1 Comment Add your own

  • 1. futhermet  |  July 8, 2008 at 12:48 pm

    SPOILER ALERT:

    Code one:

    Clue: “ATBASH” cipher; A=z; B=y

    R SZEV SRWWVM GSV GIVZHFIV RM GSV TFRGZI XZHV YVSRMW GSV XLFXS RM GSV UZNROB ILLN = i have hidden the treasure in the guitar case behind the couch in the family room

    Code two: clue, : is a delimiter; numbers refer to vowels and consonants a few letters away from vowels. So 1=a and 1,1=b

    3:2,3.3.1,3:5,4.4.5.4,3:4,3.2.5,2.1.4,3.1,3:3.3,5:4,5.2,3.3:4,5.4,3.1.4,4.2,3: = i hid your reward in thi trash (see the error? thi should be the)

    Code three: clue – is a delimiter; numbers are matched to letters in a strange pattern:

    13 a b 26
    12 c d 25
    11 e f 24
    10 g h 23
    9 i j 22
    8 k l 21
    7 m n 20
    6 o p 19
    5 q r 18
    4 s t 17
    3 u v 16
    2 w x 15
    1 y z 14

    So 26,21,24,- 25,18,6,6,- 3,18,7,2-20,16- 14,10- 10,4,16- 23,10,14,17,16- 9,21,15,19,18,7,17-21,24,10 = you will find me at the stage rocking out.

    I solved the last two through frequency analysis. It took me a while. What a novice.

    Reply

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Trackback this post  |  Subscribe to the comments via RSS Feed


Companion wiki

Del.icio.us tags

Feeds


%d bloggers like this: