Puzzle Books by Milo Marwick
Paperback puzzle books with clear rules, graded difficulty and every solution at the back.
Murder mystery logic
Detective cases solved by deduction alone: case files, crime maps, picture-logic evidence and a 17,600-suspect guest book.
Spatial reasoning
Read the top, front and side views, then rebuild the 3D solid in your head.
Mystery coloring
A grid of numbers becomes a hidden picture, one pen mark at a time.
Why a paper book?
Online puzzles are handy, but many solvers prefer a pencil: no notifications, no battery, and a finished book you can see. Every book is checked so each puzzle has exactly one answer you can reach by reasoning. The Train Tracks books follow the same rules as the puzzles on this site, so everything on the how-to-play and strategy pages applies (the closed-loop variations are explained in the book). They also make a good gift for anyone who enjoys sudoku and wants something new.