Logic Masters Deutschland e.V.

Region Sum Lines: The sum of digits along a line must be the same within each region the line passes through.

Additionally, each line satisfies one of the following:

Entropic Lines: Along an entropic line any run of three cells contains exactly one low {1,2,3}, one medium {4,5,6}, and one hight {7,8,9} digit.

Modular Lines: Along a modular line the digits in any run of three cells must all have different remainders under division by 3.

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