Logic Masters Deutschland e.V.

Normal sudoku rules apply

Digits in cells with a circle are odd.

German whispers: adjacent cells on a German whisper line differ by at least 5.

Index lines: A digit K on the Nth cell along an index line implies that the Kth cell along the line contains the digit N.

Entropic Lines: Any 3 consecutive cells along an entropic line contain one vale from {1,2,3}, one value from {4,5,6}, and one value from {7,8,9}.

1. Shaded rows and columns are all 9-cell (almost) german whisper lines, entropy lines, or index lines.

2. There are at least 2 of each type of line, and every type of line appears at least once horizontally and once vertically.

3. The type of line for R1 is not the same as the type of line for C9.

n.b.

The (almost) german whisper lines are a single 8-cell connected german whisper line with a 5 at one end (which end to be determined by the solver)

All index lines go from left to right for rows, and top to bottom for columns.