First, I'd like to thank you for being here. I just discovered your forum. I am fairly new to Sudoku, only solving them for a couple months, but already addicted.

I purchased a Will Shortz book entitled "The Giant Book of Sudoku" and in it he has several variants. One of them is called Up and Down and is similar to geometry sudoku except the numbers must run in order either up or down (hence the name I'm assuming). He only supplied 10 of them in the book and wouldn't you know I became addicted immediately. Does anyone know where I can find a book or more of them.

Thanks in advance for any help you can supply.

Camchase