Thursday, October 1, 2009

XKCD Book Puzzles

So, I've been working on the puzzles in the new XKCD volume 0 book.

Here's what I got so far:

Warning: spoilers so only go if you're stuck:

The page numbers themselves:
Initially, it appeared that he was using base 3 to count each page, but there were significant breaks in what should have been the page numbers. It appears that He follows the base three naming sequence, but will only let a single 2 be in each page number and it cannot be followed anywhere in the rest of the number by a 1. All numbers in the sequence not following this rule cannot be found. It just skips to the next number that satisfies the condition.

End of Introduction:
15 11 1 25 8 5 18 5 23 5 7 15
o k a y h e r e w e g o- okay here we go

simple substitution using the numerical values of the letters of the alphabet.
the only confusing part of a couple seconds was there looked like a space between the 8 5 and 18 5 groups.



Page 1:

Unfinished because it doesn't all make sense but appears to be a substitution.

CNEG BAR BS RVTUG VA URK: RR AVAR RVTUG SVIR BAR BAR RVTUG

???t one of eight in he?? ee nine eight five one one eight

I'm thinking "just" for the first word, "here" for the second but those double e's are really confusing the heck out of me.

Page 11:

10TAE/KE
20IBSWIY
0DE6STN8
CO25.RAP

It's a sentence that you have to map your way around starting in the top left corner:

10020CODE256BITAESW/KEYIN8PARTS. or:
10020 CODE 256 BIT AES W/ KEY IN 8 PARTS. or:
page 10020 has a 256 bit AES code whose key is in eight parts.

Page 111:

CY-O CMLROOCXN. YR M.AOGP. NRK.W ABE ,CYDRGY M.AOGP.M.BY YD.P. JAB X.
BR OJC.BJ.V
It's impossible to measure love, and without measurement there can be
no science. When it comes to love, we're all in the dark. --Kinsey

This one was difficult since he was using substitutions between not only letters but also for grammatical signs like periods, apostrophes, etc. He also used a different symbol for a capitalized "W" as opposed to a lowercase "w".


Page 1012:

can't type this one up since it's all just dots but it's all just braille.

It takes more than you
expect but less than you fear!

Page 1111

page says 3 of 8-no idea but I translated the four binary numbers into decimal and hex:
1101 1010=218=0xDA
0001 0000=16=0x10
0001 1100=28=0x1C
1011 1100=188=0xBC

Page 10020

772A3A35 DEF88CA7 OBDFD186 20B05684 934721F8 F64762FD
03F8D76B 3FA0CB8C 2756B2D0 A9F00A1B CFF1603E DB05426C

Code reference on page 11 and requiring the 8 keys to unlock it.

Page 10100

101110=46=0x2E

Page 10101:

A series of dancing men is shown, I was able to recall from back when I read the Complete Sherlock Holmes. There was a story where various stick men were in various positions and a guy holding a flag denoted a space in the words. Here it was easier because he gave us spaces built in. I then assigned a random letter to each different pose of the dancing men and understanding that I might have gotten the letters correct, did my normal procedure for solving a cryptogram.

It says:

Started with four letters but only need
three what a riddle what a mystery

Page 10112:

0011 0010 0101 1100 0001 0110 0000 1101 1110 0100 0010 1010 0110 0110 0001 0010 1100 11

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