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MASTER SAFE 16B (REALLY SAFE)
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13 Sep, 2018 @ 12:17pm
14 Sep, 2018 @ 2:16am
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warlock
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MASTER SAFE 16B (REALLY SAFE)

Description
Our MASTER SAFE SERIES 16b is next generation in protection. It requires standard 4-digit code to open, but it is arguably harder to hack than competitors ZYZZY safes since alert is raised if just 16 wrong attempts are made. This improved 'b' version have even faster evaluation!

3 Comments
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Theo 3 Oct, 2024 @ 2:19am 
Nice puzzle, I figured out how to solve it by first trying 0000, 1111, ..., 8888 to find which digits are in the code using 9 attempts, then use up to 3 attempts to find which digit is first, up to 2 for which is second, then try both orders of final two digits, max 15 failed attempts .

At first I was trying finding which position the first digit is, then the second's position, and so on, but that required way too much juggling of indexes and moving digits around and needed too many lines. Switching to finding which digit is the first instead of where the first digit goes made it fit, but it still ended up at 95 lines after I added code to avoid trying 9999.

Also the statistics show the average time is over 200K cycles??? How...
warlock  [author] 14 Sep, 2018 @ 2:24am 
Updated "b" version now does faster evaluation - customers get faster response while making it even harder for potential hackers.
warlock  [author] 13 Sep, 2018 @ 12:23pm 
Friendly warning - this one is not easy to hack ;p