Let's Crack Zodiac #24: Bomb Code Defused?

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A cryptic 1970 Zodiac Killer letter promised a hidden bomb location. Its code, Z32, remains unsolved—but can Dr. Garlick unlock its mysteries?

UPDATE: Oops, my math was wrong at 54:34. Z13 actually has this many keys: 26^8 = 208,827,064,576 (almost 209 billion). And Z32 actually has this many keys: 26^29 = 108,199,957,741,720,996,894,562,347,292,921,981,566,976 (208 "duodecillion"). So my comparison was also wrong—it wouldn't take 11 million years to examine all the Z32 keys. In fact, it would take much longer: 16,418,608,236,223,435,000,000 (16 thousand billion billion) years! 🤦🏻‍♂️ Thanks to ‪@ericastone1415‬ for pointing out the error.

00:08 Intro
02:44 Learn math and cryptography!
03:38 Dr. Ryan Garlick: Intro and background
13:31 Dr. Ryan Garlick: Zodiac’s bomb
15:27 Dr. Ryan Garlick: Z13 and new bomb
18:57 Dr. Ryan Garlick: Z32 cipher and bomb map
24:30 Dr. Ryan Garlick: Solutions using unrestricted keys
30:15 Dr. Ryan Garlick: Solutions using Z408’s key
46:00 My response
48:47 Responding to Ryan’s challenge
50:12 Alternative solutions using Ryan’s method
54:08 Conclusions

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= Links:
Let’s Crack Zodiac #23: Dr. Garlick’s Solution (to Z13):    • Let's Crack Zodiac #23 - Dr Garlick's solu...  
Let's Crack Zodiac #20: Evidence from Elsewhere:    • Let's Crack Zodiac #20 - Evidence from Els...  
Radetich reward https://www.ktvu.com/news/family-sfpd...
Bill Armstrong On ZODIAC Bomb Letter    • Zodiac Killer - Bill Armstrong On ZODIAC B...  

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