Update 2017-11-09: We have a winner! Puzzling.Stackexchange user Kayzeroshort solved the puzzle today. It took him 12 days, which means he is awarded 12 points on the Leaderboard. View the solution here.
Here’s Challenge #11 for October 27, 2017.
Today’s cipher is a method I created based on a known method, although it is likely that someone else thought of it before me. Here’s the ciphertext:
YGWCSD QDCHVF WCLEZJ CHCTJQ YUEOYG YSE,GY KYJXDZ KYCYEP IFKWGW
TIHOEP CHRTJR DOCRTU YGY,HB PEDWUC GWU.QD ;WRTDR BESDOY ZDMNUC
SFQDCH RKWCH. POXHQO QFYOY. YPSAYR QFYHYG Y,HGIT YGRT
I’ll give you three clues:
- The method is a spinoff of the famous method used to encode Challenge 10.
- The punctuation in the ciphertext encodes letters in the plaintext. (There is no punctuation in the solution.)
- The following text is not a deciphering tool but a clue that will point you in the right direction. What came after this?
3 5 7 9 N O P Q R S T U V W X Y Z
2 4 6 8 . A B C D E F G H I J K L M
New hint! (Updated 2011/11/08): The solve method lies at your fingertips.
With CodeAWeek.com, I hope to release one cipher, puzzle, or mystery each week. Anyone can attempt to solve. The winner is the first person to send a correct solution and a description of the solve method to firstname.lastname@example.org. Once a correct solution is e-mailed, I will publish a follow-up post, congratulating the winner and revealing the secrets of the code.
You may post questions or theories in the comments, but DO NOT POST SOLUTIONS. E-mail them to email@example.com.