200 MEDIUM - HARD SUDOKU PUZZLES that will keep you SATISFIED for a long long timeBig sudoku boards with plenty of room to write the solution candidates.Each puzzle increase in difficulty as you progress, which makes them satisfying and fun to solve.Advanced strategies are needed for the Tricky and Advanced puzzles.Medium puzzles can be solved without advanced strategies, but using them will shorten the solving time.Big and easy to read solutions at the end of the book.
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