Logic Masters Deutschland e.V.

Diagonal: Digits cannot repeat on the main diagonal (marked by the lines)

XV: Cells linked by a V must sum to 5 and cells linked by X must sum to 10.

SPECIAL even: Digits in the marked squares must be even AND a combination of orthogonally adjacent digits sum to it. (E.G. a 4 could have a 9,8,2,2 next to it or 7,3,1,1)

SPECIAL odd: Digits in the marked circles must be odd AND a combination of orthogonally adjacent digits must substract to it. (E.G. a 7 must have a 9 and a 2 adjacent to it (or 8,1 either 9,1,1))

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