TriDoku: 150 Triangular Sudoku Puzzles - Paperback

by Djape (Author)

Advanced Spatial Deduction: 150 Triangular Logic Grids

Abandon standard square grids and linear rows. Engineered specifically for solvers requiring a fundamental shift in spatial reasoning, this compendium introduces the TriDoku architecture. By replacing traditional 3x3 square nonets with interlocking triangular regions, this volume forces a complete overhaul of standard deductive scanning and candidate filtering.

To navigate these structures, solvers must manage multiple overlapping mathematical constraints simultaneously. Every major triangular nonet must contain the digits 1 through 9. However, the intersecting lines create secondary geometric shapes that dictate placement. The most critical of these is the Hexagon Rule: any six cells that form a hexagon within the grid strictly cannot contain repeating numbers, demanding aggressive forward projection across multiple nonets.

Basic triangular cross-hatching is insufficient to complete this volume. The final 20 puzzles escalate the cognitive friction by hybridizing the TriDoku framework with advanced structural anomalies:

• TriDoku Star (Diagonal Geometry): Navigate grids featuring three additional intersecting axes where numbers strictly cannot repeat, forcing multi-directional spatial logic.
• Jigsaw TriDoku: Master grids where the standard triangular nonets are entirely replaced by irregular, interlocking 9-cell regions, completely fracturing traditional visual tracking.

Every grid is mathematically verified to possess strictly one unique solution through pure logic alone, prohibiting guesswork. Whether utilized as a mindful daily mental workout to maintain spatial reasoning or as a rigorous deductive challenge for an experienced adult, this collection provides the definitive defense against deductive stagnation.

Author Biography

DJAPE is the author of more than 70 puzzle books and some 17 puzzle games for Amazon Kindle, ranging from Sudoku variants such as Killer Sudoku and Samurai Sudoku to Kakuro, TriDoku, Hidoku, CalcuDoku, Futoshiki and Picross/Hanjie/Griddlers/Nonograms puzzles. Also, Djape contributes regularly to newspapers and magazines across the globe, including The Washington Post. Currently Djape is working on his PhD thesis in Computer Science. Likes sailing, dancing tango, horseback riding, playing bridge and traveling.