Logic Masters Deutschland e.V.

​"Deep Thought's Answer"

A puzzle referencing a well-known book :)

Warning - I designed this puzzle quite a while ago, so when test solving it today I couldn't remember all of my original intended solve path. I found myself relying on some bifurcation steps, but thought I would go ahead and share it anyway. The way the grid "flows" is rather different to a normal sudoku, so hopefully some will enjoy the concept! As always feedback is appreciated :)

Below is the Hitchhiker's Guide to this puzzle. ​

Place the digits 1-6 once each in every row and column.

The four shaded regions are rotated clones. A digit in one clone will also appear in the same place in the other rotated clones. For example, the digits in R1C5, R5C6, R6C2 and R2C1 are all the same.

​The digit "4" touches ten cells. The sum of these ten cells is a prime number.

The digit "2" forms a Whispers line running through the twelve cells it touches. Along this line, adjacent digits must have a difference of at least two.

The letter "H" between two cells indicates that those two cells sum to 4.

Don't panic.

Sudokupad link: https://sudokupad.app/yx9ms6ytke