Mind Training logic puzzle「Number Place」 The objective is to fill a 9x9 grid with numbers without repeatedly in all row, column and 3x3 squares. Test 10000 questions in 4 levels of difficulty from Easy to Expert. Lets't choose question that suit yourself, or challenge harder with others!

Mind Training logic puzzle「Number Place」 The objective is to fill a 9x9 grid with numbers without repeatedly in all row, column and 3x3 squares. Test 10000 questions in 4 levels of difficulty from Easy to Expert. Lets't choose question that suit yourself, or challenge harder with others!