# Mark Huckvale'sSu Doku Puzzle Variants

Here are some variants of su doku puzzles that I can generate. Most puzzles can have a random or a symmetric starting position. The puzzles can have different levels of difficulty and be supplied in TXT, RTF, SVG, TIFF and PDF formats. Batches of variant puzzles can be purchased for publication.

Standard 9x9Code: gp9
Complete the grid such that each row, each column and each 3x3 box contains the digits 1−9.
Standard 4x4Code: gp4
Complete the grid such that each row, each column and each 2x2 box contains the digits 1−4.
Standard 6x6Code: gp6
Complete the grid such that each row, each column and each 2x3 box contains the digits 1−6.
Standard 8x8Code: gp8
Complete the grid such that each row, each column and each 2x4 box contains the digits 1−8.
Standard 12x12Code: gp12
Complete the grid such that each row, each column and each 3x4 box contains the numbers 1−12.
Standard 16x16Code: gp16
Complete the grid such that each row, each column and each 4x4 box contains the digits 0−9 and the letters A−F.
Letter 9x9Code: gp9let
Complete the grid such that each row, each column, each 3x3 box contains the letters 'ADEIKOSTU'. The solution contains a hidden word or phrase!
Letter 12x12Code: gp12let
Complete the grid such that each row, each column, each 3x4 box contains the letters 'ACEHIKLMORUV'. The solution contains a hidden word or phrase!
Standard 6x6 with diagonalCode: gp6d
Complete the grid such that each row, each column, each 2x3 box and each diagonal contains the digits 1−6.
Standard 9x9 with diagonalCode: gp9d
Complete the grid such that each row, each column, each 3x3 box and each diagonal contains the digits 1−9.
Even-odd 8x8Code: gp8e
Complete the grid such that each row, each column, each 2x4 box contains the digits 1−8. The marked cells must contain only even digits, the unmarked cells, only odd digits.
Double 9x9 overlap 1Code: gp9x1
Complete the grid such that each row, each column, and each 3x3 box in each of the two puzzles contains the digits 1−9.
Double 9x9 overlap 2Code: gp9x2
Complete the grid such that each row, each column, and each 3x3 box in each of the two puzzles contains the digits 1−9.
Triple 9x9 overlap 2Code: gp9x3
Complete the grid such that each row, each column, and each 3x3 box in each of the three puzzles contains the digits 1−9.
Complete the grid such that each row, each column, and each 3x3 box in each of the four puzzles contains the digits 1−9.
Quintuple 9x9 "Samurai"Code: gp9x5
Complete the grid such that each row, each column, and each 3x3 box in each of the five puzzles contains the digits 1−9.
Eleven 9x9 "Shogun"Code: gp9x11
Complete the grid such that each row, each column, and each 3x3 box in each of the eleven puzzles contains the digits 1−9.
Double 4x4 overlapCode: gp4x2
Complete the grid such that each row, each column, and each 2x2 box in each of the two puzzles contains the digits 1−4.
Double 12x12 overlapCode: gp12x2
Complete the grid such that each row, each column, and each 3x4 box in each of the two puzzles contains the numbers 1−12.
Jigsaw 4x4 version 1Code: gp4t1
Complete the grid such that each row, each column, and each tile contains the digits 1−4.
Jigsaw 5x5 version 1Code: gp5t1
Complete the grid such that each row, each column, and each tile contains the digits 1−5. (I have five more 5x5 jigsaw variants too: gp5t2-gp5t6):

Jigsaw 6x6 version 1Code: gp6t1
Complete the grid such that each row, each column, and each tile contains the digits 1−6. (I have three more 6x6 jigsaw variants too: gp6t2-gp6t4):

Jigsaw 7x7 version 1Code: gp7t1
Complete the grid such that each row, each column, and each tile contains the digits 1−7.
Jigsaw 8x8 version 1Code: gp8t1
Complete the grid such that each row, each column, and each tile contains the digits 1−8.
Jigsaw 8x8 version 2Code: gp8t2
Complete the grid such that each row, each column, and each tile contains the digits 1−8.
Jigsaw 9x9 version 1Code: gp9t1
Complete the grid such that each row, each column, and each tile contains the digits 1−9.
Jigsaw 9x9 version 2Code: gp9t2
Complete the grid such that each row, each column, and each tile contains the digits 1−9.
Jigsaw 9x9 version 3Code: gp9t3
Complete the grid such that each row, each column, and each tile contains the digits 1−9.
Jigsaw 10x10 version 1Code: gp10t1
Complete the grid such that each row, each column, and each tile contains the digits 0−9.
Quadruple Jigsaw 8x8 overlap 1Code: gp8t1x4
Complete the grid such that each row, each column, and each tile in each of the four puzzles contains the digits 1−8.
Triple Jigsaw 9x9 overlap 1Code: gp9t1x3
Complete the grid such that each row, each column, and each tile in each of the three puzzles contains the digits 1−9.
Quintuple Jigsaw 9x9 overlap 1Code: gp9t1x5
Complete the grid such that each row, each column, and each tile in each of the five puzzles contains the digits 1−9.
Samu/Killer 9x9Code: samu
Complete the grid such that each row, each column, and each 3x3 box contains the digits 1−9, and that the linked boxes add up to the sum shown. Repeated digits are not allowed in the linked boxes.
Hexagonal version 2Code: gp6hex2
Complete the grid such that each hexagon (around the circles), the set of triangles containing filled dots, and the set of triangles containing open dots contains the digits 1−6.
Hexagonal 19cellsCode: gp6hex19
Complete the grid such that each hexagon (around the circles) contains the digits 1−6.
Duo 8x8Code: gp8duo
Complete the grid such that each row, each column and each 2x2 box contains the digits 1−8. Each cell contains two digits, and the upper left digit is always smaller than the lower right.
Trio 4x4Code: gp4trio
Complete the grid such that each row, each column and each 2x2 box contains the numbers 1−12. Each cell contains three numbers, and the number at the upper left is always less than the centre number which in turn is less than the number at the lower right of the cell.
Kakuro/Kakro/Cross-sumCode: kakuro
Kakuro puzzles also available! See my Kakuro page.

Complete the grid with the digits 1-9 such that each horizontal block and each vertical block add up to the tota shown. Digits may not be repeated in any block.

Masyu/PearlsCode: masyu
Masyu puzzles also available!.

Draw a single loop through the middles of the cells that passes through each of the black and white pearls but does not cross itself. When the line goes through a black pearl it must go straight through at least one cell before and after the pearl, and turn right angles at the pearl. When the line goes through a white pearl, it must go straight through the pearl but must turn at right angles in either the cell before or the cell after the pearl.

Futoshiki 5x5Code: gp5futoshiki
Futoshiki puzzles also available!.

Complete the grid using the digits 1-5 such that each row and each column contain one instance of each digit. In addition the values of the indicated pairs of digits must obey the less-than (<) and greater-than (>) symbols.

Futoshiki 7x7Code: gp7futoshiki
Complete the grid using the digits 1-7 such that each row and each column contain one instance of each digit. In addition the values of the indicated pairs of digits must obey the less-than (<) and greater-than (>) symbols.
Futoshiki 9x9Code: gp9futoshiki
Complete the grid using the digits 1-9 such that each row and each column contain one instance of each digit. In addition the values of the indicated pairs of digits must obey the less-than (<) and greater-than (>) symbols.
Fillomino 9x9Code: fillomino
Fillomino puzzles also available!.

Complete the grid with the digits 1-7 so that each digit n is part of a group of n cells. Within a group, cells of the same digit must connect horizontally and vertically, but two different groups made up from the same digit may not touch horizontally or vertically. There may be groups in the solution which are not indicated by any digit in the original setting.

KenKenTM style 6x6 & 9x9Code: ken6 & ken9
KenKenTM style puzzles also available!.

Complete the grid with the digits 1-6 (1-9 for 9x9 puzzle) so that each row and each column contains one of each digit. In addition the values in the linked boxes form a simple arithmetic sum using the given operator (+, −, ×, ÷) which must equal the total shown. Unlike killer puzzles, repeated digits are allowed in the linked boxes.

KenKen is a trademark of Nextoy.

BattleshipsCode: battle
Battleship puzzles also available!.

Locate the hidden fleet of 1 battleship, 2 cruisers, 3 destroyers and 4 submarines from clues about how many ship parts can be found in each row and each column.