Self-Referential Sudoku
(Published on 13. November 2020, 20:05 by antichaos)
This is my first attempt at creating a puzzle. I've always been interested in self-referential things, and it turns out that sudoku is more self referential than you might first expect. This puzzle uses target cells in order to have a no-digits starting position, but you could just use references without the targets to provide some extra restriction in a sudoku with some given digits. I'm interested to see what more experienced setters can do with this rule set.
Rules
Normal Sudoku rules apply. A cell linked by an RC pair of the same colour must be the same as the cell at the coordinates given by the linked cells. For example 3 R 4 C 6 means that the cell at row 3 column 6 must be a 4. Each shaded cell is the target of exactly one coordinate pair. Not all valid RC marks are given.
Penpa link https://git.io/JkcUw
Solution code: Row 9 followed by column 9
Comments
on 16. November 2020, 12:34 by antichaos
Updated to fix an ambiguity with the break-in. Sudoku towards the end now substantially harder
on 14. November 2020, 09:05 by antichaos
Added sudoku tag
on 14. November 2020, 04:45 by glum_hippo
Please include the sudoku tag
on 14. November 2020, 00:20 by Semax
Nice one.
on 13. November 2020, 22:29 by antichaos
Updated to disambiguate connections to r4c7
on 13. November 2020, 22:22 by antichaos
Ah No. They need some colour to disambiguate. Will fix.
on 13. November 2020, 20:41 by Semax
Are the two cells in row 3 column 7 and row 4 column 8 also an RC pair?
