Logic Masters Deutschland e.V.

Originally published as part of the Modular Lines Unlocked Pack for Cracking the Cryptic. Available here from CtC and as part of the collection of Free Skunkworks Packs.

Normal Sudoku Rules Apply. Place the digits 1-9 in each row, column, and box with no repeats.

Modular lines: Every set of three sequential digits along a line must contain a complete set of residues modulo 3, i.e. one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}. Digits may repeat on a line if allowed by other rules.

Entropic lines: Every set of three sequential digits along a line must contain one low, one medium, and one high digit, i.e. one digit from {1,2,3}, one from {4,5,6}, and one from {7,8,9}. Digits may repeat on a line if allowed by other rules.

One line is entropic and the other is modular. It is up to the solver to determine which is which.

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