The New Sudoku Players' Forum

[DonM]

I strongly prefer the expression of the pattern in notation rather than trying to notate the inferences within. As for the XYwing, for me, that would be something like Blue's XYWing:(68)r8c7,(89)r8c4,(69)r9c9.

Speaking of patterns, I would also like to see chains using patterns such as Broken-Wing/Oddagon, Empty Rectangle and some DP patterns notated by simply showing the constructs of the pattern without the need to express the chain as what is sometimes a network. Networks usually involve a substantial increase in assumptivity, but the presence of the above patterns removes that assumptivity.