Killer Kakuro (Mark Huckvale/Orion Books) Has a rather interesting puzzle variant in it, that combines sudoku and kakuro in a different way that seen previously (Samunampure/Killer Sudoku):
A sudo-kuro hybrid is a kakuro puzzle which has an active area of 11x11, with 2 cells in each row and column filled in, leaving 9 empty cells in each row and column, where the numbers go from 1 to 9 without repitition. Has anyone else seen this?