Buffalo Soldier Sudoku Series
Tesla's Blueprint Sudoku
Electricity, Invention, and the Architecture of Innovation
The fourth volume contains 80 medium-difficulty Sudoku challenges in a spacious 7 × 10-inch format, combining focused recreation with a Tesla-inspired theme of invention, experimentation, and disciplined thinking.
Amazon retail shown in the July 2026 catalog: $12.99. Price and availability may change.
