Sophomore Year

by Frank Longo

Published 3 April 2018

We’ll school you in sudoku! Find your grade, improve your play—and graduate to the next level.
Sudoku professor Frank Longo has crafted five books with 300 sudoku each, which will take students from solving basics to super-hard, super-expert strategies. Try them and see how far you can go!

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Freshman Year

by Frank Longo

Published 3 April 2018

We'll school you in sudoku! Find your grade, improve your play-and graduate to the next level.
Sudoku professor Frank Longo has crafted five books with 300 sudoku each, which will take students from solving basics to super-hard, super-expert strategies. Try them and see how far you can go!

...

Read more