Sudoku block - easy, medium, hard

All solutions in the clear solution section . Avoiding emissions: Printed with mineral oil-free inks and on 100 % recycled paper . Climate-neutral products by offsetting residual emissions through support of environmental projects . Reforestation: With every book, the publisher contributes 10 cents to projects for the planting of native forests. Ingeniously simple and yet darn difficult: Sudoku is top-class puzzle fun. Here comes the perfect challenge for all fans of the Japanese cult puzzle: With 192 Sudokus in three difficulty levels, you can test your Sudoku skills and gradually improve them. Brains and the ability to combine - that's all you need to solve the magic number squares. But beware: the ingenious number puzzles are addictive! For more sustainability in everyday life: This book was printed with inks without mineral oil and on 100 % recycled paper. Residual emissions are offset by supporting environmental projects. In addition, the publisher pen2nature contributes 10 cents to projects for planting native forests with each book. How exactly does all this work? The publisher provides detailed and transparent information on its website.