I have always liked doing logic puzzles. Since they became popular this has included the Japanese puzzles such as Sudoku.

There are now quite a few types of these puzzles and I regularly complete them online. If you have never tried them why not have a go. A selection of them are available on this site courtesy of www.conceptispuzzles.com. If you have never done logic puzzles before a tutorial page is also provided.

I have also added some free puzzles from other sources and some Strategy Games.

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Picture Logic
Pic-a-Pix Sym-a-Pix
Pic-a-Pix Sym-a-Pix
Link-a-Pix Fill-a-Pix
Link-a-Pix Fill-a-Pix
Maze-a-Pix Dot-a-Pix
Maze-a-Pix Dot-a-Pix 
Number Logic
Sudoku Kakuro
Sudoku Kakuro
Battleships Hitori
Battleships Hitori
slitherlink Hashi
Slitherlink Hashi
CalcuDoku Nurikabe
CalcuDoku Nurikabe
Skyscrapers  
Skyscrapers  
Other Logic
Tic-Tac-Logic Wooden-Path
Tic-Tac-Logic Wooden-Path