The Times Samurai Su Doku: Book 8 presents a collection of 100 new Samurai puzzles, featuring a five-grid interlinked system designed for an extended mental workout. The puzzles adhere to the standard Su Doku rules where each column, row, and 3x3 box must contain the digits 1 to 9. The complexity arises from the overlapping grids, which provide additional clues and challenges beyond traditional Su Doku. The book is structured into four difficulty levels: 10 Easy, 40 Mild, 40 Difficult, and 10 Super difficult, representing the most challenging puzzles in The Times range.

This collection is designed for dedicated Su Doku enthusiasts seeking a significant challenge. The extended five-grid format and the inclusion of 'Super difficult' puzzles indicate a focus on endurance and advanced logical deduction. The progression through four difficulty levels suggests a structured approach to mastering the complex interlinked grids, catering to solvers who have already achieved proficiency in standard Su Doku.