Search results for “[subject: puzzles]”

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesJigsaw sudoku replaces the familiar three-by-three boxes of ordinary sudoku with irregular nine-cell regions that snake across the grid like puz...

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesThis is a book that, to our knowledge, has never before appeared in print: 163 killer sudoku puzzles in which every cage sum is a prime number. ...

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesSamurai sudoku is the pentagonal variant of ordinary sudoku: five nine-by-nine grids arranged so that four outer grids share their corner three-...

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesMiracle sudoku is, in the opinion of nearly every constraint-variant enthusiast who has attempted it, the most remarkable sudoku variant ever de...

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesThis is the harder of our two killer sudoku volumes, aimed at solvers who have mastered the gentler collections and now want grids that fight ba...

• Author(s): Euler Ai • Publisher: Proven Puzzles • Publisher Imprint: Proven Puzzles • BISAC: PuzzlesEvery puzzle in this book has been proved to have exactly one solution � " not by inspection, not by hand, but by a computational verification p...