Monday puzzles: sudoku XV (actually, these are non-xv puzzles)
Puzzle 1
0945 Sudoku XV RS 29-06-15
Place the digits 1-9 in each column, each row and in all 3×3 regions. X markers show all adjacent pairs of squares where the two values in those squares add up to 10, while V markers show all pairs where the two values sum up to 5.