Carol Vorderman, the UK's best-known mathematician and bestselling author of How To Do Sudoku and Carol Vorderman's Massive Book of Sudoku, returns once again with the perfect book for all those Sudoku addicts champing at the bit to take their skills to the next stage.

Carol Vorderman, the UK's best-known mathematician and bestselling author of How To Do Sudoku and Carol Vorderman's Massive Book of Sudoku, returns once again with the perfect book for all those Sudoku addicts champing at the bit to take their skills to the next stage.