In Japanese, hitori roughly translates to ‘leave me alone’, and you’ll

understand why when you pick up the rules to this puzzle.

To complete the puzzle, every row and column must not contain the same digit

twice. You’ll notice in the example given here that there are repeated

numbers, so it’s your job to shade out just enough numbers to satisfy the master rule.

Formats available: tif

Frequency/Availability: Weekly

How to play: Fill in the blank squares of the grid, using 1 to 9, without repeating any number in any run line. The lines must be filled in with numbers whichadd up to the total in the shaded box at the top or beginning of each line. A number in the bottom half of the shaded box gives a downwardstotal; in the top half, it’s a horizontal total.

Formats available:

Frequency/Availability: Daily

Insert the numbers one to seven in each row and each column, taking care that no number is repeated in a particular row. The only symbols to guide you are the signs for “greater than” and “less than”.

Formats available: tif

Frequency/Availability: Weekly

Usual sudoku rules apply. Also, 1 to 3 appears in the normal squares,

4 to 6 in the dashed circles and 7 to 9 in the dashed squares.

Formats available: tif

Frequency/Availability: Weekly

Complete the grid so that every row, column and 3x3 box contains every digit from 1-9 inclusive.

Levels 1-5. Available daily.

©DJB. Dist. Knight Features. All rights reserved.

Complete the grid so that every row, column and coloured box contains every digit from 1-9 inclusive.

©DJB. Dist. Knight Features. All rights reserved.

Usual sudoku rules apply. Also, 1 to 9 appears in the four shaded

3x3 squares.

Formats available: tif

Frequency/Availability: Weekly

Each row, column and irregular shaped area contains 1 to 9.

Formats available: tif

Frequency/Availability: Weekly

Fill in the grid so that every row, column and coloured box contains ALL the numbers from 1 to 6. Each puzzle has a bonus clue to get you started!

Formats available: tif

Frequency/Availability: Daily

To begin, look at the digit which occurs most frequently in the grid. In which rows, columns and boxes is it missing? Also look at rows, columns and boxes which are almost complete – which numbers are missing and where could they go? The rest is up to you!

Formats available: tif

Frequency/Availability: Daily

Classic Sudoku too small? Try the Monster!

Formats available: tif

Frequency/Availability: Weekly

Usual sudoku rules apply. Also, the odd digits appear in the grey squares.

Formats available: tif

Frequency/Availability: Daily

Complete the grid so that every row, column and 3x3 box contains the letters

AEFGINRST in some order. One row or column contains a 7-letter word - what is it?

Formats available:

Frequency/Availability: Weekly

Usual sudoku rules apply. Also, the main diagonals (shaded) contain 1 to 9

Formats available: tif

Frequency/Availability: Daily

Four Sudoku puzzles joined by a common edge.

Formats available: tif

Frequency/Availability: Daily

© JFS/Knight Features

The Big One! Five separate Sudoku puzzles, joined by four common 9x9 squares.

Formats available: eps, tif

Frequency/Availability: Daily

© JFS/Knight Features

Each face is a separate Sudoku puzzle. The three adjacent 9x9 corner squares count as one 9x9 square shared in common.

Formats available: eps, tif

Frequency/Availability: Weekly

© JFS/Knight Features

SUMBRERO®: The numbers in the black cells represent the sum of the adjacent numbers to be inserted in the white cells.This is a game that requires logic thinking. You don't need to be a mathematician to solve a Sumbrero® puzzle!

Each square is to contain both a letter and a number such that every row, and every column, contains one of each letter, A-G and number, 1-7.

Each letter/number combination must appear exactly once. The check boxes below help to keep track of which combinations have been used.

Formats available: tif

Frequency/Availability: Daily

© William Paulsen