Unique fitness, warm-up, training and positive energy for the brain. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). Su-Kro-Kuro puzzles. ("Sukrokuro" - the name of the puzzle is made up of parts of the words "Sudoku", "Kropki", and "Kakuro") combines elements of three puzzles: Sudoku, Sudoku-points and Kakuro. The task is a square grid with white and black cells. It is necessary to fill white cells with numbers so that in each row and in each column each number from 1 to N would meet only once. In black cells, the upper right value is the sum of the numbers in the row, and the value from the bottom left is the sum of the column numbers below the cell. If the numbers in neighboring cells differ by one, then there is a point on the border between them. If there is no point between two adjacent cells, the numbers in these cells differ by more than one. 60 Killer sudoku puzzles 9x9 extreme levels. 60 Killer sudoku puzzles 12x12 extreme levels. 120 Sukrokuro sudoku puzzles 12x12. Only 1 verified solution. All answers are at the end of the book. Killer sudoku may be called or searched with the following phrases or names: sudoku, sum sudoku, killer sudoku books, times killer sudoku, sumdoku, sudoku books, extreme killer sudoku, times killer 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 game books, greater than sudoku, mini killer sudoku, sum sudoku solver, the big book of killer su doku, play sudoku puzzles, sudoku for children, dailykillersudoku, sumoku puzzle book, daily killer, how to solve killer sudoku, how to play killer sudoku, sudoku sudoku sudoku, how to do killer sudoku, sudoku game very hard, krazydad killer, sodoku knacker, multi sudoku puzzles, very hard sudoku games, mega sudoku puzzles, sudoku puzzle maker, difficult sudoku puzzles, killer sudoku brainbashers, best sudoku game, best sudoku puzzles, killersud, killer sudoku cheat sheet, sample sudoku puzzles, sudoku summer, sudoku welt, suduko for beginners, who is the killer puzzle, killer sudoku pro, big sudoku puzzles. Sukrokuro sudoku may be called or searched with the following phrases or names: kropka, sukrokuro, super sudoku, sudoku classic, fason, biale, jest, oraz, bardzo, sudoku world, sudoku fun, bordo, posiada, elastycznośc, zen of sudoku, cyfra, kukuru, kurako puzzle, how to do kakuro, sudoku 2go, kakuro master, how do you play kakuro, sudoku kingdom puzzles, difficult sudoku, kakuro sums, kakuro cross sums, sudoku genina, real kakuro, kakuro puzzle solver, sudokus, sudoku solver, play kakuro, sudoku and kakuro, kakuro books, sudoku brainium, sudoku puzzle solver, wordoku, extreme sudoku, sudoku offline, sudoku x, word sudoku, sudoku igra, sudoku killer, daily sudoku, killer sudoku, sudoku kingdom, kakuro challenge, play sudoku game, sudoku sudoku, sudoku finger arts, games like sudoku, learn sudoku, pure sudoku, kakuro board game, crazy dad kakuro, kakuro hints, sudoku japanese puzzles, kuroko puzzle, sudoku duel, how to play kakuro puzzles, kakuro live, the big sudoku, uclick kakuro, kakuro software, sudoku kuroko, kukuru puzzle, kakuro vs sudoku, sudoku games offline, kakuro on, kakaru game, best kakuro. I hope you enjoy the book. Best regards, Basford Holmes