In case you needed reminding, consecutive pairs is much like consecutive, only not all the pairs are given. Much cleaner in my opinion, and much nicer to look at.
Enjoy!
#310 Consecutive Pairs Sudoku – rated hardAll puzzles © Tom Collyer 2009-15.
#310 Consecutive Pairs Sudoku – rated hardAll puzzles © Tom Collyer 2009-15.
#309 Irregular Sudoku – rated mediumAll puzzles © Tom Collyer 2009-15.