Will Shortz Presents Black Diamond Sudoku: 200 Extreme Puzzles MTO DOVER_APR58 Chapman's book “Color Breeding For

Chapman's book “Color Breeding For Pigeon Fanciers”

It does not involve broad acres or landed gentry

professionally arranged in the original easy-to-read Real Book notation

While the title of the book implies 'mandalas' which are normally circular or perfect square

Even a hero like Luke Skywalker struggled to learn patience

Will Shortz Presents Black Diamond Sudoku: 200 Extreme Puzzles MTO DOVER_APR58 Chapman's book “Color Breeding ForWatch out! These puzzles are for the most extreme solvers! But if you dare, grab a pen and take on these two hundred all new extra challenging puzzles in Will Shortz Presents Black Diamond Sudoku. Features: 200 hard puzzles Big grids for easy solving Introduction by legendary puzzlemaster Will Shortz