Hard
Expert Riddles
25 XP

The Poisoned Well

7,395 solved 53% solve rate 47% fail rate
A king has 1000 wine bottles, one poisoned. Poison kills in exactly 30 days. He has 10 servants and 30 days to find the poisoned bottle. How?
Only 53% solve this correctly
7,395 attempts
Earn +25 XP for solving
Quick Answer & Explanation
10 testers

The answer to this riddle is 10 testers. Difficulty: Hard · Solved by 7,395 puzzle lovers.

Number bottles in 10-bit binary (2^10 = 1024). Each tester drinks from bottles where their assigned bit is 1. The exact death pattern reveals the binary number of the poisoned bottle.
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