Absolutely big font. Holmes presents Sudoku and puzzles: 1 puzzle per page. Paperback glossy cover. Large print on quality white paper easy to read. 30 Jigsaw Killer sudoku 9x9 hard levels. 30 Jigsaw Killer sudoku 12x12 extreme levels. 30 Cacludoku sudoku 8x8 hard levels. 30 Cacludoku sudoku 9x9 extreme levels. Jigsaw Killer sudoku. This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9 (1 to 6; 1 to 8; 1 to 12), each of the digits should appear only once in each row and column of the 9x9 (6x6; 8x8; 12x12) square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names ( Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). Calcudoku - this is a mathematical and logical puzzle. It is necessary to fill the grid with numbers so that in each line and in each column they are not repeated. The number in the corner of each selected block is the result of an arithmetic operation on the digits in this block. The numbers inside the block can be repeated. 50% of the math signs are hidden. The puzzle can be called Square Wisdom, Kendoku. Jigsaw Killer sudoku may be called or searched with the following phrases or names: sudoku, jigsaw sudoku, jigsaw killer, sum sudoku, killer sudoku books, times killer sudoku, sumdoku, sudoku books, hard killer sudoku, extreme killer sudoku, hard killer sudoku, times killer sudoku books, jigsaw sudoku books, killer sudoku puzzles, puzzle, the times killer sudoku books, times ultimate killer sudoku books, sudoku 9x9, killer sudoku puzzle books, killer puzzle, sumoku sudoku, sudoku puzzels, sudoku game, sudoku puzzle books, daily killer sudoku, daily sudoku killer, sudoku puzzles, sudoku for kids, hard sudoku puzzles, extreme sudoku puzzles, very hard sudoku puzzles, times killer sudoku solutions, super sudoku, daily sudoku, game sudoku, sudoku tips, sudokus, how do you play sudoku, play sudoku, sudoku solver, how to do sudoku, the times ultimate killer sudoku, play killer sudoku, sudoku answers, ultimate killer sudoku, how to play sudoku, sudoku rules, sudoku challenge, how to solve sudoku, sudoku puzzle solver, su doku, jigsaw sudoku, sudoku solution, sudoku easy, simple sudoku, sudoku solutions, sumoku puzzles, sudoku puzzles extreme. Calcudoku may be called or searched with the following phrases or names: cendoku, calcudoku, kendoku, sudoku game, maths puzzles, kendoku puzzles, daily sudoku, mathdoku answers, calcudoku solver, mathdoku solver, sudoku puzzles, sudoku brainium, malacca, sudoku math puzzles, maze, mathdoku, mathdoku puzzles with answers, campo santo, jigsawdoku, futoshiki, inky puzzles, fantino, sparkchess, shabash, mandate, permainan sudoku, dkm shisen, sudoku sudoku, math sudoku, calcudoku answers, qonqr, beachball pop, mathdoku rules, sudoku puzzle game, itrash, calcudoku rules, calcudoku puzzles, iball touch, andoku, void runner, numby, mathdoku 9x9 answers, life sim, nextoy llc, sudoku normal, sumoku sudoku, puzzles similar to sudoku, punch clock, hitoshi puzzle, gem lites, ryukendo, tetcolor, gichtel, crazy turtle, ticbits sudoku, listen to masters, card wars, newspaper maths puzzles, polar bear escape, mnemosyne, patrick min, sample sudoku puzzles, gametimer, japanese math puzzles, sudoku with friends, hidden ships, letter ladder, week end, jigsaw master. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes