Yobitech Consulting imprint: 5 books

Sudoku Fiendish Volume 3 EBook contains total of 228 very hard puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. This book was designed for more advanced sudoku players. Each individual puzzle has a single unique...

Sudoku Fiendish Volume 1 EBook contains total of 228 very hard puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. This book was designed for more advanced sudoku players. Each individual puzzle has a single unique...

Sudoku Fiendish Volume 2 EBook contains total of 228 very hard puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. This book was designed for more advanced sudoku players. Each individual puzzle has a single unique...

Sudoku Fiendish Volume 4 EBook contains total of 228 very hard puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. This book was designed for more advanced sudoku players. Each individual puzzle has a single unique...

Sudoku Fiendish Volume 5 EBook contains total of 228 very hard puzzles organized at 5 different difficulty levels (1-5) with all of their solutions. The instruction to play both in English and Spanish. This book was designed for more advanced sudoku players. Each individual puzzle has a single unique...