nikoli.com Puzzle Championship

Event informationPuzzle ChampionshipNikoli DerbyMinority DecidesFlush

The winner of the puzzle championship vol. 78 is Ziti! Congratulations!

The next puzzle championship will be Fri. Feb 19, 13:00 (UTC). The puzzle will be a 17x17 Extra Hitori created by 45.


Puzzle Championships 2010

You can enjoy time trial problems, if the starting buttons for puzzles are displayed on the table below.

Click "Time" of champions, then you will know how they solved the time trial problems.

Members can enjoy all time trial problems at the members area.

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.78ZitiTry Kakuro puzzle
Kakuro
31x21

Extra

T.Karino

Fri. Feb 5, 13:00:00
13:10:04
9:59

492
Vol.77merrilinTry Shikaku puzzle
Shikaku
45x31

Extra

Ryohei Nakai

Fri. Jan 22, 13:00:00
13:13:48
13:41

806
Vol.76sunanekoroomTry Numberlink puzzle
Numberlink
36x20

Extra

Guten

Fri. Jan 8, 13:00:00
13:04:47
4:44

684

Puzzle Championships 2009

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.75hijiringTry Nurikabe puzzle
Nurikabe
45x31

Extra

aiko

Fri. Dec 25, 13:00:00
13:18:38
18:30

1336
Vol.74SphinxTry Sudoku puzzle
Sudoku
9x9

Extra

Casty

Fri. Dec 11, 13:00:00
13:05:04
4:55

81
Vol.73takkkunTry Slitherlink puzzle
Slitherlink
45x31

Extra

aiko

Fri. Nov 27, 13:00:00
13:12:51
11:53

1496
Vol.72ajiTry Heyawake puzzle
Heyawake
45x31

Extra

OLAKE

Fri. Nov 13, 13:00:00
13:13:15
13:01

1462
Vol.71SphinxTry Akari puzzle
Akari
45x31

Extra

crimson

Fri. Oct 30, 13:00:00
13:07:09
7:01

613
Vol.70catmaskTry Hashiwokakero puzzle
Hashiwokakero
41x27

Extra

45

Fri. Oct 16, 13:00:00
13:14:16
14:09

562
Vol.69ajiTry Masyu puzzle
Masyu
45x31

Extra

cubic function

Fri. Oct 2, 13:00:00
13:16:52
16:45

1526
Vol.68PsyhoSudoku9x9

Extra

Casty

Fri. Sep 18, 13:00:00
13:03:38
3:31

110
Vol.67moka36Try Hitori puzzle
Hitori
17x17

Extra

Casty

Fri. Sep 4, 13:00:00
13:04:38
4:28

86
Vol.66uri@nowKakuro31x21

Extra

aiko

Fri. Aug 21, 13:00:00
13:18:16
17:59

513
Vol.65monkeyfishShikaku45x31

Extra

Ogawa Minori

Sat. Aug 1, 04:00:00
04:17:50
17:43

489
Vol.65motrisNurikabe45x31

Extra

juno

Sat. Aug 1, 04:00:00
04:15:02
14:51

1304
Vol.65H.JoSlitherlink45x31

Extra

Komieda

Sat. Aug 1, 04:00:00
04:22:04
19:44

1510
Vol.64takkkunHeyawake45x31

Extra

OLAKE

Fri. Jul 24, 13:00:00
13:22:07
21:37

461
Vol.63hijiringAkari45x31

Extra

Miya

Fri. Jul 10, 13:00:00
13:09:18
9:13

500
Vol.62MOMOHashiwokakero41x27

Extra

45

Fri. Jun 26, 13:00:00
13:10:04
9:58

577
Vol.61SphinxMasyu45x31

Extra

Komieda

Fri. Jun 12, 13:00:00
13:13:57
13:45

1326
Vol.60ZitiKakuro31x21

Extra

-4

Fri. May 29, 13:00:00
13:13:49
13:39

768
Vol.59MORHitori17x17

Extra

45

Fri. May 15, 13:00:00
13:09:57
9:47

81
Vol.58hirakuShikaku45x31

Extra

aiko

Fri. May 1, 13:00:00
13:08:56
8:50

365
Vol.57omaSudoku9x9

Extra

Casty

Fri. Apr 17, 13:00:00
13:04:23
4:15

96
Vol.56HammyNurikabe45x31

Extra

Casty

Fri. Apr 3, 13:00:00
13:13:33
12:35

1288
Vol.55uriSlitherlink45x31

Extra

aiko

Fri. Mar 20, 13:00:00
13:17:07
16:59

1407
Vol.54mokuHeyawake45x31

Extra

Komieda

Fri. Mar 6, 13:00:00
13:12:48
12:42

1267
Vol.53komami-Akari45x31

Extra

aiko

Fri. Feb 20, 13:00:00
13:06:55
6:45

678
Vol.52nyoroppyiHashiwokakero41x27

Extra

45

Fri. Feb 6, 13:00:00
13:16:08
16:03

672
Vol.51KitakazeMasyu45x31

Extra

akasyo

Fri. Jan 23, 13:00:00
13:15:01
14:53

1341
Vol.50H.JoKakuro31x21

Extra

akasyo

Fri. Jan 9, 13:00:00
13:20:18
20:09

562

Puzzle Championships 2008

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.49nyoroppyiShikaku45x31

Extra

Casty

Sat. Dec 27, 04:00:00
04:07:48
7:33

280
Vol.49polakeHeyawake45x31

Extra

HIRO FUKUSHIMA

Sat. Dec 27, 04:00:00
04:12:30
12:25

427
Vol.49volxaNurikabe45x31

Extra

juno

Sat. Dec 27, 04:00:00
04:16:22
16:15

1360
Vol.48motrisSudoku9x9

Extra

red-magician

Dec 12, 13:00:00
13:05:11
5:06

131
Vol.47hijiringAkari45x31

Hard

Casty

Nov 28, 13:00:00
13:08:11
8:06

560
Vol.46ajiHashiwokakero41x27

Extra

45

Nov 14, 13:00:00
13:13:45
13:38

562
Vol.45MORHitori17x17

Extra

Kumotan

Oct 31, 13:00:00
13:07:55
7:47

80
Vol.44ajiMasyu45x31

Extra

Casty

Oct 17, 13:00:00
13:17:39
17:30

1288
Vol.43volxaKakuro31x21

Extra

akasyo

Oct 3, 13:00:00
13:14:43
14:38

530
Vol.42jyokunNurikabe45x31

Extra

juno

Sep 19, 13:00:00
13:17:58
17:53

755
Vol.41sirousaShikaku45x31

Extra

Casty

Sep 5, 13:00:00
13:09:59
9:53

304
Vol.40MORAkari45x31

Extra

juno

Aug 22, 13:00:00
13:08:07
7:50

186
Vol.39volxaSlitherlink45x31

Extra

crimson

Aug 8, 13:00:00
13:18:45
18:37

1355
Vol.38jyokunHeyawake45x31

Extra

Casty

Jul 23, 13:00:00
13:11:21
11:16

437
Vol.37lozzMasyu45x31

Extra

NyanBaz

Jul 13, 13:00:00
13:12:02
11:50

1350
Vol.36ZitiKakuro31x21

Extra

akasyo

Jul 4, 13:00:00
13:18:25
18:10

679
Vol.35detunedSudoku9x9

Extra

Hone Rokuo

Jun 20, 13:00:00
13:06:24
5:57

89
Vol.34gorishNurikabe45x31

Extra

MINE

Jun 6, 13:00:00
13:14:22
14:18

1308
Vol.33MalthusShikaku45x31

Extra

aspirin

May 23, 13:00:00
13:06:59
6:38

79
Vol.32H.JoHitori17x17

Extra

OLAKE

May 9, 13:00:00
13:17:52
17:36

83
Vol.31ajiSlitherlink45x31

Extra

Komieda

Apr 25, 13:00:00
13:20:25
20:14

1579
Vol.30H.JoAkari45x31

Hard

akasyo

Apr 11, 13:00:00
13:03:29
3:23

181
Vol.29mokuHeyawake45x31

Extra

NyanBaz

Mar 28, 13:00:00
13:13:49
13:43

1559
Vol.28KitakazeMasyu45x31

Extra

Miya

Mar 14, 13:00:00
13:12:48
12:42

1267
Vol.27H.JoKakuro31x21

Extra

osakana

Feb 29, 13:00:00
13:13:02
12:54

493
Vol.26HammyNurikabe45x31

Extra

red-magician

Feb 15, 13:00:00
13:14:01
13:49

1308
Vol.25H.JoShikaku45x31

Extra

Casty

Feb 1, 13:00:00
13:09:14
9:09

301
Vol.24uriSlitherlink45x31

Extra

Yuichi Saito

Jan 18, 13:00:00
13:17:12
17:03

1290
Vol.23komami-Akari45x31

Hard

crimson

Jan 4, 13:00:00
13:08:06
8:02

488

Puzzle Championships 2007

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.22KazunegiHeyawake36x20

Extra

aspirin

Dec 21, 13:00:00
13:07:22
7:18

238
Vol.21tarotaroSudoku9x9

Extra

red-magician

Dec 7, 13:00:00
13:06:30
6:08

78
Vol.20HugoKakuro31x21

Hard

Komieda

Nov 23, 13:00:00
13:11:10
10:57

464
Vol.20ajiShikaku45x31

Extra

Casty

Nov 23, 13:00:00
13:14:16
14:04

341
Vol.20HammyNurikabe45x31

Extra

red-magician

Nov 23, 13:00:00
13:15:37
15:24

1328
Vol.19jyokunHitori17x17

Extra

mimic

Nov 9, 13:00:00
13:06:45
6:23

78
Vol.18maysureNurikabe45x31

Extra

aspirin

Oct 26, 13:00:00
13:13:51
13:40

779
Vol.17uriKakuro31x21

Extra

crimson

Oct 12, 13:00:00
13:17:24
17:13

493
Vol.16maysureSlitherlink45x31

Extra

OX

Sep 28, 13:00:00
13:24:29
24:14

1311
Vol.15maysureAkari45x31

Hard

Casty

Sep 14, 13:00:00
13:09:14
8:53

270
Vol.14maysureHitori17x17

Extra

mimic

Aug 31, 13:00:00
13:12:58
12:48

79
Vol.13HugoNurikabe45x31

Extra

juno

Aug 17, 13:00:00
13:18:51
18:37

1287
Vol.12jyokunHeyawake45x31

Extra

NyanBaz

Aug 3, 13:00:00
13:19:16
18:55

439
Vol.11tarotaroKakuro31x21

Extra

-4

Jul 20, 13:00:00
13:17:37
17:26

493
Vol.10gori.shSlitherlink45x31

Extra

crimson

Jul 6, 13:00:00
13:19:55
19:48

1878
Vol.9uriAkari45x31

Extra

mimic

Jun 22, 13:00:00
13:08:36
8:28

181
Vol.8HammyHitori17x17

Extra

mimic

Jun 8, 13:00:00
13:14:13
14:06

129
Vol.7motrisSudoku9x9

Extra

TAKEI Daisuke

May 25, 13:00:00
13:09:31
9:04

110
Vol.6ajiNurikabe45x31

Extra

aspirin

May 11, 13:00:00
13:18:21
18:12

1295
Vol.5mokuHeyawake45x31

Extra

OX

Apr 27, 13:00:00
13:21:53
21:45

1451
Vol.4uriSlitherlink45x31

Hard

aspirin

Apr 13, 13:00:00
13:13:54
13:38

1283
Vol.3FUMIKAZUKakuro21x13

Extra

mimic

Mar 30, 13:00:00
13:15:24
15:16

212
Vol.2gori.shAkari45x31

Extra

OX

Mar 16, 13:00:00
13:12:45
12:34

719
Vol.1mimicNurikabe45x31

Hard

TAKEI Daisuke

Mar 2, 13:00:00
13:16:36
16:25

1395

Rules of nikoli.com Puzzle Championships

Get the puzzle immediately when it is posted. The first correct solution is the winner. Start right away and hurry, race, dash to solve it and submit it immediately! The history of the solution will be open to other registered members.

An announcement for the "Time trial problem" will be posted on the publication schedule page of the members area 7 days before its release. At the start of the time trial, it will appear in the table of recent puzzles. So, after logging into the members area wait for the race to start - but you have to be a member.

After you have been declared Champion once in one year you may take part in all following time trials, but your solution will not be counted among those qualifying. You can only be declared a Champion once a year.

When you become a champion?

Your name will be displayed and remain on the Champion page of nikoli.com Hall of Fame. When you become Champion you will receive an original Nikoli T-shirt, as well as you are honored in our Hall of Fame. Please tell us your name and address and the size of T-shirt you need, so we can get the T-shirt to you.