sudoku

There are many kind of sudoku, u can find many at
http://games.groups.yahoo.com/group/Sudokuworld/

The following are some site of some special sudoku:
Super Wordoku
http://sudoku.top-notch.co.uk/superwordoku.asp

Monster Sudokus
exactly the same as sudoku, but more numbers and letters are needed. 12x12 puzzles require the numbers 1 to 9 and A, B and C in each row, column and 3x4 box. 16x16 puzzles need 0 to 9, and the letters A to F.
http://www.dailysudoku.co.uk/sudoku/index.shtml

nonomino Sudoku puzzle
the 9×9 grid is not standard, The goal is to fill in the empty cells, one numeral in each, so that each column, row, and each color region contains the numerals 1–9 exactly once.
http://en.wikipedia.org/wiki/Image:Nonominosudoku.JPG

Target Sudoku(Cir ular Sudoku)
The rule is that each of the ten numbers 0-9 must appear in each of the five rings and each of the ten pairs of adjacent segments.
http://www.esds.ac.uk/news/newsdetail.asp?ID=1499

Magic Sudoku
Magic Sudoku is a variation of the original Sudoku. It's adds some new restrictions:
-Every main diagonal has the numbers 1 to 9 without repetition. (the same as original sudoku but applied to diagonals).
-Every Quadrant has only a number.
-There is some special rows (filled with blue color). The value of the numbers who are in this cells is lower or equal as the number of coloured cells in every quadrant.
http://www.printsudoku.com/index-en.html

Samurai SuDoku
Samurai sudoku puzzles consist of five overlapping sudoku grids. The standard sudoku rules apply to each 9 x 9 grid. Place digits from 1 to 9 in each empty cell. Every row, every column, and every 3 x 3 box should contain one of each digit.
http://www.samurai-sudoku.com/

Code Doku
http://www.mathrec.org/sudoku/

Cube Sudoku
http://www.mathrec.org/sudoku/cubedoku.html

Hope you enjoy them!