Normal sudoku rules apply.
The digit 1 must not see an identical digit by chess knight's move (anti-knight).
Each of the digits 2 to 7 must form a chain of identical digits connected by a sequence of knight's moves on distinct cells where the digit represents the number of digits on the chain. (eg. The digit 7 must form a chain of 7 identical digits connected by knight's moves).
Each digit forms exactly one such chain and the remaining digits must not see an identical digit by knight's move. (eg. The digit 2 forms one chain of 2 digits leaving 7 anti-knight digits).
No knight restrictions are placed on 8 or 9.
Digits separated by a black dot have a ratio of 1:2. Not all dots are given.
Solution code: row 8
on 28. June 2022, 00:29 by Workout9
Incredibile! Thanks :)
on 15. June 2022, 00:29 by peacherwu2
How could someone ever come up with an idea like that?!
on 13. June 2022, 11:26 by ranhothchord
that was incredible!
on 13. June 2022, 07:44 by Dag H
Beautiful puzzle Scruffamudda.
on 13. June 2022, 02:41 by Nylimb
This felt like 3 different puzzles, one after the other. Nicely done!