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Comments from Martin Cope and Jim Gillogly Back to Hall of Fame Comments from Martin Cope Encoding matrix is: FINAL HKMPV GXZQC EWUST DBYROKey is FINAL VICTORY with clockwise spiral insertion. Solved with pencil and paper by dragging crib texts through cipher text and attempting to recover a viable matrix to determine when correct position found. Comments from Jim Gillogly Martin doesn't give much detail, but he alludes to the key idea in starting a Playfair with a crib: the operation called "crib dragging." This is important in the solution of many kinds of ciphers when a crib is available: Try the crib at each position in turn and see whether you can find contradictions or confirmations, or make further deductions based on that position. Crib dragging can be done effectively by eyeball or with a computer program. Crack the Ciphers | Send a Coded Message | A Simple Cipher Are Web Transactions Safe? | Mind of a Codebreaker | How the Enigma Works Resources | Teacher's Guide | Transcript | Site Map | Decoding Nazi Secrets Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated November 2000 |