GridHearth Puzzles · Paperback on Amazon
180 Puzzles with Locked Candidates, Pairs, a Solving Checklist, and Complete Solutions
Paperback available on Amazon in selected countries
Paperback · 8.5 × 11 inches · 122 pages · black ink on white paper
For adults who know Sudoku rules and can already use naked and hidden singles (moves with only one possible number). This volume offers 180 Medium 9 × 9 puzzles, four worked examples for locked candidates and pairs, a repeatable five-step solving loop, and complete numbered solutions.
Each puzzle has one solution and can be solved with the techniques shown in the book, without guessing. This is guided practice, not a complete beginner course.
Inside the book
Pointing, claiming, naked pair, and hidden pair examples show which possible numbers can be crossed out before the puzzle section. The five-step loop starts with singles, then checks locked candidates and pairs before updating the possible numbers and repeating.
Practice grids measure at least 4 inches per side; the answer key is compact. Large print is not used throughout the book.
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