1000 Hard Sudoku Puzzles To Improve Your IQ (IQ BOOST PUZZLES) (Volume 10)
Book Details
Author(s)
Kalman Toth
ISBN / ASIN
1492960330
ISBN-13
9781492960331
Availability
Usually ships in 24 hours
Sales Rank
#3,713,932
Marketplace
United States 🇺🇸
Description
SCIENTIFICALLY PROVEN THAT REGULAR SUDOKU PUZZLE SOLVING IMPROVES IQ AND KEEPS BRAIN IN TOP SHAPE. THIS BOOK HAS 1000 9x9 HARD SUDOKU PUZZLES WITH SOLUTIONS. COMPUTER CAN SOLVE HARD SUDOKU PUZZLES IN 4-8 SECONDS. EACH PUZZLE WAS CHECKED FOR A SINGLE SOLUTION. IQ CAN BE INCREASED BY SOLVING 3-5 SUDOKU PUZZLES WEEKLY.
