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Double Samurai Sudoku Harakiri Compendium: 81 overlapping sudoku puzzles, 8 grids in 1
Paperback
Series: Super Samurai Grid Architecture: The Multi-Overlap Collection
General MathematicsLogic & Brain TeasersSudoku
ISBN13: 9781548038229
Publisher: Createspace Independent Publishing Platform
Published: Jun 12 2017
Pages: 100
Weight: 0.56
Height: 0.21 Width: 8.50 Depth: 11.00
Language: English
Experience the evolution of overlapping logic with Sudoku Harakiri. Created by Djape, the renowned puzzle author for The Washington Post, this compendium introduces the Gattai-8 format-a sophisticated architecture featuring eight overlapping 9x9 grids. Laid out as two Samurai Sudokus stacked atop one another, every puzzle in this volume provides double the complexity and deductive depth of a standard Samurai challenge.
This is not a vanilla collection. To push your logical limits, this volume includes five distinct Harakiri variants, each adding a new layer of constraints to the Gattai-8 structure:
- Jigsaw Harakiri: Traditional 3x3 nonets are replaced with irregularly shaped jigsaw regions, requiring a total shift in pattern recognition.
- Consecutive & Non-Consecutive: Logic dictated by the presence-or strict absence-of adjacent numerical sequences across the overlapping grids.
- Diagonal Harakiri: Every diagonal in every 9x9 sub-puzzle must contain unique digits from 1 to 9.
- Hyper Harakiri (Windoku): Each sub-puzzle contains four additional shaded 3x3 windows that must also contain unique digits.
In alignment with the Djape standard, every puzzle is verified for 100% logical solvability. You will never encounter a grid that requires guessing or trial-and-error. By applying standard Sudoku techniques across the interlocked 8-grid system, you can solve every puzzle through pure deductive reasoning.
Optimized for Serious Solvers:- 81 All-New Puzzles: A massive collection of high-difficulty grids that have never been published in other volumes.
- Strategic Instruction: Includes a detailed introduction explaining the rules of each variant and expert solving suggestions, such as why you should never start with the center sub-puzzle.
- Premium Format: Large 8 x 10 layout printed on thick, high-quality white paper designed to withstand heavy use and erasing.
- Unique Solution Guarantee: Every puzzle has exactly one correct solution, ensuring a frustrating-free (but challenging) experience.
Whether you are an engineer, a math enthusiast, or a veteran solver looking for the next step in Sudoku evolution, the Double Samurai Sudoku Harakiri Compendium delivers an elite mental workout.
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