Just when sudoku fans are getting a bit jaded, along comes an irresistible new challenge--Tridoku! This time, instead of a square, the diagram is a colorfully patterned triangle. And just as in the older game, the rules for entering the digits from 1 to 9 are simple, while the logic required to put them in the right places can be surprisingly tricky. Even budding sudoku addicts can join in on the fun, since the puzzles start out easy before becoming progressively more challenging.

Offers sudoku in a new shape. Instead of squares, this work offers these puzzles in triangles, all colour-coded to indicate special spaces where numbers can't repeat and where new rules of play come into action.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Futoshiki is a fun and addicting logic puzzle game that combines Sudoku with inequality constraints. This book is ideal for you if you love to solve difficult Futoshiki 9x9 puzzles. You do not need to wade through tons of easy Futoshiki puzzles before getting to the real brain teasers. Once you pick up this book, you won't be able to put it back down. You have been warned! Futoshiki 9x9 - Hard is a collection of 276 puzzles: 216 hard Futoshiki 9x9 puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this Futoshiki puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Futoshiki is also known as Hutoshiki and Unequal.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Outside Sudoku is a fun and addicting logic puzzle game. This book is ideal for beginners to learn Outside Sudoku. Once you pick up this book, you won't be able to put it back down. You have been warned! Outside Sudoku - Easy is a collection of 276 puzzles: 216 easy Outside Sudoku puzzles 60 extra logic puzzles The goal of Outside Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. Some digits are given outside the grid. These digits must appear in the first three cells in the corresponding direction. I guarantee that every logic puzzle in this Outside Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Binary Puzzles are fun and addicting logic puzzle games. The goal seems to be very simple, fill in the grid with the numbers 0 and 1. However, do not be fooled by its simplicity, Binary Puzzles are really challenging logic puzzles and are excellent brain games. This book is ideal for you if you already know how to solve Binary Puzzles but you find our hard Binary Puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned! Binary Puzzles 14x14 - Medium is a collection of 276 puzzles: 216 medium Binary Puzzles 14x14 60 extra logic puzzles The goal of a Binary Puzzle is to fill in the grid with the numbers 0 and 1 according to the following rules: There are as many ones as zeros in every row and every column (or one more for odd sized grids). No more than two of the same number can be next to or under each other. Each row is unique, and each column is unique. I guarantee that every logic puzzle in this Binary Puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Binary Puzzles are also known as Takuzu, Tohu wa Vohu and Binero.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Numbricks. You will experience Numbricks 10x10, Numbricks 13x13 and Numbricks 15x15. You get the perfect mix of different sizes of Numbricks to keep you entertained for weeks. After solving all the puzzles in this book, you will be a Numbricks Pro. You start with easy Numbricks puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely hard Numbricks puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Numbricks Mixed Grids Deluxe - Easy to Hard is a collection of 474 puzzles: 48 easy Numbricks puzzles per grid size, totaling 144 easy puzzles 48 medium Numbricks puzzles per grid size, totaling 144 medium puzzles 48 hard Numbricks puzzles per grid size, totaling 144 hard puzzles 42 extra logic puzzles The goal of Numbricks is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Diagonal paths are not allowed. I guarantee that every logic puzzle in this Numbricks puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Minesweeper is well known by the logic puzzle game in Microsoft Windows. This book is ideal if you love to play Minesweeper no matter their size. This book is ideal for beginners to learn how to solve different sizes of Minesweeper. You get the perfect mix of different sizes of Minesweeper to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Minesweeper Mixed Grids - Easy is a collection of 159 puzzles: 40 easy Minesweeper 20x20 puzzles 40 easy Minesweeper 25x25 puzzles 40 easy Minesweeper 30x30 puzzles 39 extra logic puzzles The task of Minesweeper is to place mines into empty cells in the grid. The numbers in the grid represent the number of mines in the neighboring cells, including diagonal ones. I guarantee that every logic puzzle in this Minesweeper puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Futoshiki is a fun and addicting logic puzzle game that combines Sudoku with inequality constraints. This book is ideal for beginners to learn how to solve different sizes of Futoshiki. You will experience Futoshiki 7x7, Futoshiki 8x8 and Futoshiki 9x9. You get the perfect mix of different sizes of Futoshiki to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Futoshiki Mixed Grids - Easy is a collection of 276 puzzles: 72 easy Futoshiki 7x7 puzzles 72 easy Futoshiki 8x8 puzzles 72 easy Futoshiki 9x9 puzzles 60 extra logic puzzles The goal of Futoshiki is to place one number in each empty cell, so that each column and row contains each number exactly once. Some numbers may be given at the start. In addition, inequality constraints are specified between some of the squares, such that the number must be higher or lower than its neighbor. These constraints must be honored as the grid is filled out. I guarantee that every logic puzzle in this Futoshiki puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Futoshiki is also known as Hutoshiki and Unequal.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Battleship Solitaire is a fun and addicting logic puzzle based on the Battleships guessing game. Become a master in solving Battleship Solitaire After solving all the puzzles in this book, you will be a Battleship Solitaire Pro. Once you pick up this book, you won't be able to put it back down. You have been warned! Battleship Solitaire 14x14 Deluxe is a collection of 468 puzzles: 408 Battleship Solitaire 14x14 puzzles 60 extra logic puzzles The goal of Battleship Solitaire is to discover where all battleships are located. There can be battleships of 4 squares, cruisers of 3 squares, destroyers of 2 squares, and submarines of 1 square. Some squares may contain given ship or water segments as hints to help start the puzzle. I guarantee that every logic puzzle in this Battleship Solitaire puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Battleship Solitaire is also known as Battleships and Solitaire Battleships.

When you buy this book you get an electronic version (PDF file) of the interior of this book. Samurai Sudoku is Sudoku on steroids. It combines 5 Sudoku's into one large fun and addicting logic puzzle game that will give you hours of puzzle pleasure. This book is ideal for you if you already know how to solve Samurai Sudoku puzzles but you find our hard or extreme Samurai Sudoku puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 Samurai Sudoku puzzle per page, with lots of white space for scribbling. Samurai Sudoku consists of five 9x9 grids, one in the center and the other 4 overlapping each corner grid of the central one. For each 9x9 grid the goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1-9 exactly once. Samurai Sudoku - Medium is a collection of 159 puzzles: 120 medium Samurai Sudoku puzzles 39 extra logic puzzles I guarantee that every logic puzzle in this Samurai Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Samurai Sudoku is also known as Gattai-5.