This puzzle was created for the "monthly puzzle prompt" on the
CTC discord server.
The theme for this month of July 2021 is NEW VARIATIONS.
Join it to find out more!
Rules
Normal Sudoku rules apply.
Additions and multiplications are Mod 9 and 9=0 is written down as 9.
Clues joining 4 cells apply to both diagonals.
Digits in two cells separated by an X sum to 10.
Digits in two cells separated by a V sum to 5 Mod 9.
White dots join cells with consecutive digits. 1 and 9 are consecutive.
A cell joined by a black dot is twice the other Mod 9. For example mod9 (2 * 8) = mod9 (16) = 7. 7 can join 8.
Digits in a diagonal pointed at by an arrow show the remainder mod 9 of the sum in that diagonal. The digits on a diagonal may repeat.
No negative constraint.
Link to play:
F-Puzzles