CHALLENGES BY 1799, THE CRYPTOGRAPHER.FROM MANUSCRIPT CRYPTONIKI .
Saturday, March 25, 2023
CHALLENGE 5642.2 [UNSOLVED]
Wednesday, March 15, 2023
CHALLENGE 5642.1 [USOLVED]
Wednesday, February 15, 2023
CHALLENGE 5624.1[UNSOLVED]
Wednesday, December 28, 2022
CHALLENGE 5606.1 [UNSOLVED]
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