Logic Masters Deutschland e.V.

Logic Masters India hosts a sudoku contest every month. I had the honor to prepare the puzzles for the coming contest. It will be held from 14 till 16 December 2013. It will be called "Best of Sudokus 2010 - 2011"; A set of 20 sudokus and sudoku variants. I have choosen a puzzle from every sudoku test that was held by LMI in 2010 and 2011. Some of the variants are published here in the portal earlier by me.

As always the case after making puzzles for a contest, I had a few unused puzzles and I would like to share them here in the portal. At the same time, I can make same extra advertisement for the contest. Participation is free, only a registration at LMI is necessary. You can solve the puzzles whenever you like in the weekend. After downloading the .pdf-file you have two hours time to submit your solutions. You can find the instruction booklet here.

Sudoku XV
Place the digits from 1 to 9 in each row, column and 3x3-block.All horizontally and vertically neighboring digits with the sum 10 are marked with X, all horizontally and vertically neighboring digits with the sum 5 are marked with V.