Logic Masters Deutschland e.V.

Hello. This is my new puzzle. Alcatraz (Heron) is the first puzzle in a series inspired by the Nasca Lines, a group of geoglyphs in southern Peru. This series does not try to draw the shapes as close as possible to the geoglyphs, but to make reference to their most famous figures. I hope you like it.

Rules:

1. Normal sudoku rules apply. Each row, column and 3x3 box contains each digit from 1 to 9 exactly once.
2. Antiknight: Cells separated by a knight's move (as in chess) cannot contain the same digit.
3. Dutch Whispers: Along an orange line, adjacent digits differ by at least 4.
4. Kropki Pairs: Digits joined by a white dot must be consecutive. Digits joined by a black dot must be in a 1:2 ratio. Not all possible dots are necesarilly given.

Solve on SudokuPad

Have fun solving!

Here you can find the other puzzles in the series:

#1 Alcatraz

#2 Araña

#3 Ballena

#4 Cactus

#5 Árbol

#6 Colibrí

#7 Cóndor

#8 Flor

#9 Astronauta

#10 Lagarto

#11 Manos

#12 Mono