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Sudoku

Sudoku is the classic Japanese number puzzle. In a 9×9 grid, you must place the numbers 1–9 in each row, column, and 3×3 square.

Today
432
3579
784
8
41
35
9583
715
4157
Argh!
Mar 16, 2015
3629
38
41
514
28936
462
12
859
9
Argh!
Jan 30, 2017
372
452
395
9
65387
4756
8
43
3645
Average

Kakuro

Kakuro is a popular logic puzzle made with a patterned grid of empty squares. Each empty square must be filled with a number between 1 and 9. Numbers can only be used once in each horizontal or vertical series, and they must add up to the sum shown above each column or to the left of each row. Each puzzle has only one unique solution.

Jan 20, 2011
7×7
Mar 11, 2011
11×11

Jigsaw

Your jigsaw puzzle begins as a jumbled mass of color, but once solved these puzzles are art. Work against the clock or simply play for fun. Jump into a random jigsaw puzzle to begin playing immediately, or browse through the jigsaw gallery to find your perfect challenge.

Ocean's Twelve 1by TouToukeOcean's Twelve 120×15
New York 10by njansenNew York 1020×15

Hashi

Generic description of hashi...

Feb 14, 2011
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10×18
Oct 28, 2011
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12×12

Hitori

My hitori generator still needs work, as it can't yet make puzzles which can be solved with logic alone. I'm working on it. If anyone knows of any free hitori generators, I'd appreciate the info.

Jan 8, 2011
43512
12413
22132
31215
23351
5×5
Jan 9, 2011
8739151434821071415164
7131629911106413365315
146856941051391471102
121615111045864131261498
8471015121414861641513131
10129147139411681110738
213315121211111271316641
1510447116515733861412
316148161110713917141411
13151261114825111137512
158812317151111149141210
1019514716147964103156
1294158715111556113139
26167111121316145148211
4921361145101512125176
751539476418281512
16×16

Nonogram

Paragraph talking about nonograms.

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10×10
Jun 28, 2012
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15×15
Sep 19, 2012
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20×20

Word Search

Word search description goes here.

European CapitalsAmsterdam, Ankara, Athens, Belgrade, Bern, Brussels, Bucharest, Budapest, Copenhagen, Dublin, Helsinki, Lisbon, London, Madrid, Moscow, Oslo, Paris, Prague, Reykjavik, Rome, Sarajevo, Stockholm, Vatican City, Warsaw24 terms
Famous Inventors 1Babbage, Benz, Braille, Eastman, Faraday, Fermi, Franklin, Gabor, Ibn Sina, Moog, Nobel, Sikorsky, Strauss, Wright, al-Khwarizmi, da Vinci16 terms

Mathdoku

This page is incomplete. For now, jump to a random mathdoku puzzle.

Jan 2, 2011
11+2÷20×6×
3−3÷
240×6×
6×7+30×
6×9+
8+2÷
Average – 6×6
Jan 8, 2011
6+1−3÷36×
6×5×
36×1−
13+1−2÷24×
4−7+4−
7+
Difficult – 6×6

Polyomino

A polyomino is a misshapen domino. In these puzzles, you must divide the grid into polyominoes and determine the shape of each polyomino given its size in the grid. Polyominoes of the same size cannot share a side.

Feb 7, 2011
1111111
41835542
11661
12131135
511811
7557111
6115917713
111
111571
81555559
417518511
21613442
111411
17×13
Feb 20, 2011
11411511
741945
781355641
1111
1663517
1911418
531716449
11161
51161
75175551
1751516
314655234
15115
17×13

Illumination

Paragraph talking about illumination.

Jan 4, 2011
0
31
21
21
20
31
23
21
10
2
10
1
1
14×14
Jan 12, 2011
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2
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222
100
11
14×14