nikoli.com Puzzle Championship

Event informationPuzzle ChampionshipNikoli DerbyMinority DecidesFlush

The winner of the puzzle championship vol. 186 is furudo.erika! Congratulations!

The next puzzle championship will be Fri. May 2, 13:00 (UTC). The puzzle will be a 45x31 Extra Nurikabe created by -4.


Puzzle Championships 2014

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.186furudo.erikaTry Hitori puzzle
Hitori
17x17

Extra

T.Karino

Sat. Apr 19, 23:00:00
23:08:53
8:37

419
Vol.185mottyTry Masyu puzzle
Masyu
45x31

Extra

aiko

Sat. Apr 5, 23:00:00
23:11:06
11:01

1412
Vol.184hasettiTry Shikaku puzzle
Shikaku
45x31

Extra

Guten

Sat. Mar 22, 13:00:00
13:03:18
3:11

60
Vol.183moka36Try Ripple Effect puzzle
Ripple Effect
18x18

Extra

T.Karino

Sat. Mar 8, 13:00:00
13:20:53
20:14

316
Vol.182nyoroppyiTry Heyawake puzzle
Heyawake
45x31

Extra

aiko

Sat. Feb 22, 13:00:00
13:10:59
10:55

1139
Vol.181deuTry Yajilin puzzle
Yajilin
45x31

Extra

aiko

Sat. Feb 8, 13:00:00
13:10:54
10:49

1332
Vol.180ZitiTry Kakuro puzzle
Kakuro
31x21

Extra

T.Karino

Fri. Jan 24, 10:00:00
10:15:42
15:36

563
Vol.179ByronosaurusRexTry Satogaeri puzzle
Satogaeri
45x31

Extra

bay wolf Jr

Fri. Jan 10, 10:00:00
10:17:37
17:25

218

Puzzle Championships 2013

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.178volxaTry Slitherlink puzzle
Slitherlink
45x31

Extra

YukiHiro

Sat. Dec 28, 13:00:00
13:11:20
11:13

1264
Vol.177bf81Try Hashiwokakero puzzle
Hashiwokakero
41x27

Extra

Ogawa Minori

Sat. Dec 14, 13:00:00
13:09:45
9:39

608
Vol.176RichardRoeTry Shakashaka puzzle
Shakashaka
45x31

Extra

aiko

Sun. Dec 1, 13:00:00
13:09:51
9:47

994
Vol.175hiro-ymTry Akari puzzle
Akari
45x31

Extra

nyoroppyi

Sun. Nov 17, 13:00:00
13:10:00
9:53

183
Vol.174ajiTry Nurikabe puzzle
Nurikabe
45x31

Extra

Ogawa Minori

Sun. Nov 3, 13:00:00
13:13:26
13:17

1411
Vol.173Mme.ChorizoMasyu45x31

Extra

Pencil Rocket

Sun. Oct 20, 13:00:00
13:14:25
14:08

1234
Vol.172aquanoteShikaku45x31

Extra

T.Karino

Sun. Oct 6, 13:00:00
13:10:50
10:44

461
Vol.171MORHitori17x17

Extra

cherry

Fri. Sep 20, 13:00:00
13:10:26
10:19

81
Vol.170KazunegiHeyawake45x31

Extra

Guten

Fri. Sep 6, 13:00:00
13:11:37
11:32

433
Vol.169jiatjiatYajilin45x31

Extra

Guten

Sat. Aug 24, 00:00:00
00:16:15
15:50

1265
Vol.168gorishTry Numberlink puzzle
Numberlink
36x20

Extra

Casty

Sat. Aug 10, 00:00:00
00:06:44
6:41

991
Vol.168jmendelsonKakuro31x21

Extra

-4

Sat. Aug 10, 00:00:00
00:16:10
16:01

633
Vol.168bskbriTry Sudoku puzzle
Sudoku
9x9

Extra

Guten

Sat. Aug 10, 00:00:00
00:04:22
4:07

127
Vol.167rythenSlitherlink45x31

Extra

YukiHiro

Sat. Jul 27, 00:00:00
00:13:43
13:32

1086
Vol.166catmaskHashiwokakero41x27

Extra

Ogawa Minori

Sat. Jul 13, 00:00:00
00:10:41
10:36

649
Vol.165TuringJoe_Jr.Ripple Effect18x18

Extra

aiko

Sun. Jun 30, 13:00:00
13:14:33
14:30

345
Vol.164pisacaShakashaka45x31

Extra

Guten

Sun. Jun 16, 13:00:00
13:10:11
10:03

756
Vol.163kezukezuAkari45x31

Extra

the ax and sword

Sun. Jun 2, 13:00:00
13:06:02
5:57

498
Vol.162nyoroppyiNurikabe45x31

Extra

Guten

Sun. May 19, 13:00:00
13:14:06
13:52

1391
Vol.161roroboMasyu45x31

Extra

aiko

Sun. May 5, 13:00:00
13:11:42
11:39

1408
Vol.160AnchorNavyHeyawake45x31

Extra

bay wolf Jr

Fri. Apr 19, 03:30:00
04:07:39
35:40

1859
Vol.159vanillaiceShikaku45x31

Extra

aiko

Fri. Apr 5, 03:30:00
03:41:54
11:49

844
Vol.158BKTNHitori17x17

Extra

cherry

Fri. Mar 22, 03:30:00
03:34:40
4:35

81
Vol.157deuKakuro31x21

Extra

akasyo

Fri. Mar 8, 03:30:00
03:48:43
18:40

579
Vol.156mizuikeYajilin45x31

Extra

T.Karino

Fri. Feb 22, 13:00:00
13:14:36
14:28

1599
Vol.155mottySlitherlink45x31

Extra

aiko

Fri. Feb 8, 13:00:00
13:11:06
11:01

1513
Vol.154sinh9Numberlink36x20

Extra

Ogawa Minori

Fri. Jan 25, 13:00:00
13:03:49
3:46

794
Vol.153MOMOHashiwokakero41x27

Extra

aiko

Fri. Jan 11, 13:00:00
13:06:10
6:04

514

Puzzle Championships 2012

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.152MOMOAkari45x31

Extra

Guten

Sat. Dec 29, 01:00:00
01:06:03
5:56

518
Vol.152jiatjiatMasyu45x31

Extra

YukiHiro

Sat. Dec 29, 01:00:00
01:14:32
14:20

1216
Vol.152norikinRipple Effect18x18

Extra

aiko

Sat. Dec 29, 01:00:00
01:19:45
19:40

308
Vol.151wrhtnarzShakashaka45x31

Extra

aiko

Sat. Dec 15, 01:00:00
01:16:10
16:05

986
Vol.150kurocchiHeyawake45x31

Extra

the ax and sword

Sat. Dec 1, 01:00:00
01:14:33
14:15

1870
Vol.149doctor-masaShikaku45x31

Extra

T.Karino

Sun. Nov 18, 13:00:00
13:17:26
17:17

510
Vol.148sinh9Hitori17x17

Extra

nyoroppyi

Sun. Nov 4, 13:00:00
13:10:49
10:45

131
Vol.147ZitiKakuro31x21

Extra

T.Karino

Sat. Oct 20, 13:00:00
13:12:01
11:54

560
Vol.146MellowMelonNurikabe45x31

Extra

cubic function

Sat. Oct 6, 13:00:00
13:12:53
12:40

1215
Vol.145RichardRoeYajilin45x31

Extra

aspirin

Fri. Sep 21, 13:00:00
13:29:27
29:16

2485
Vol.144penrokeSlitherlink45x31

Extra

Guten

Fri. Sep 7, 13:00:00
13:16:43
16:37

1476
Vol.143hiro-ymAkari45x31

Extra

nyoroppyi

Fri. Aug 24, 13:00:00
13:06:58
6:49

115
Vol.142ajiHashiwokakero41x27

Extra

Guten

Fri. Aug 10, 13:00:00
13:10:49
10:43

445
Vol.141detunedMasyu45x31

Extra

aiko

Sun. Jul 29, 13:00:00
13:16:51
16:45

1318
Vol.140NTKSRipple Effect18x18

Extra

Turing-Joe Jr.

Sun. Jul 15, 13:00:00
13:18:00
17:49

322
Vol.140willwcSudoku9x9

Extra

aspirin

Sun. Jul 15, 13:00:00
13:05:36
5:30

113
Vol.140TuringJoe_Jr.Numberlink36x20

Extra

Guten

Sun. Jul 15, 13:00:00
13:08:22
8:16

836
Vol.139SpelvinShikaku45x31

Extra

Ogawa Minori

Sun. Jul 1, 13:00:00
13:10:44
10:35

439
Vol.138bf81Heyawake45x31

Extra

cubic function

Sun. Jun 17, 13:00:00
13:12:14
12:03

440
Vol.137motrisNurikabe45x31

Extra

Ogawa Minori

Sun. Jun 3, 13:00:00
13:12:25
12:07

1230
Vol.136mizuikeYajilin45x31

Extra

Pencil Rocket

Sun. May 20, 13:00:00
13:24:38
24:26

1841
Vol.135moka36Hitori17x17

Extra

Hammy

Sun. May 6, 13:00:00
13:12:11
12:06

83
Vol.134volxaSlitherlink45x31

Extra

Pencil Rocket

Sun. Apr 22, 13:00:00
13:22:28
22:22

1485
Vol.133deuKakuro31x21

Extra

-4

Sun. Apr 8, 13:00:00
13:15:32
15:26

527
Vol.132nyoroppyiAkari45x31

Extra

Casty

Fri. Mar 23, 12:00:00
12:05:59
5:37

531
Vol.131wakkyHashiwokakero41x27

Extra

cherry

Fri. Mar 9, 12:00:00
12:13:15
13:07

623
Vol.130CaltanMasyu45x31

Extra

Pencil Rocket

Fri. Feb 24, 12:00:00
12:18:57
18:45

1558
Vol.129vanillaiceShikaku45x31

Extra

cubic function

Fri. Feb 10, 12:00:00
12:13:02
12:57

895
Vol.128pisacaHeyawake45x31

Extra

aiko

Fri. Jan 27, 12:00:00
12:10:58
10:55

419
Vol.127KotaSudoku9x9

Extra

aspirin

Fri. Jan 13, 12:00:00
12:03:11
3:06

62
Vol.126roroboNurikabe45x31

Extra

Pencil Rocket

Fri. Jan 6, 12:00:00
12:16:13
13:44

1311

Puzzle Championships 2011

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.125tarotaroNumberlink36x20

Extra

Guten

Fri. Dec 16, 12:00:00
12:09:21
9:13

744
Vol.125KenjaNumberlink36x20

Extra

POTS

Fri. Dec 16, 12:00:00
12:08:31
8:26

834
Vol.124vanillaiceYajilin45x31

Extra

aspirin

Fri. Dec 2, 12:00:00
12:25:00
24:51

2447
Vol.123uri@nowSlitherlink45x31

Extra

T.Karino

Fri. Nov 18, 13:00:00
13:21:44
21:40

1273
Vol.122NTKSRipple Effect18x18

Extra

T.Karino

Fri. Nov 4, 13:00:00
13:20:19
20:11

323
Vol.121moka36Kakuro31x21

Extra

aiko

Sat. Oct 22, 01:00:00
01:18:17
18:10

520
Vol.120mizuikeAkari45x31

Extra

Guten

Sat. Oct 8, 01:00:00
01:08:53
8:41

589
Vol.119MOMOHashiwokakero41x27

Extra

cherry

Sat. Sep 24, 01:00:00
01:08:21
8:13

565
Vol.118wakkyHitori17x17

Extra

Guten

Sat. Sep 10, 01:00:00
01:06:21
6:11

83
Vol.117RichardRoeMasyu45x31

Extra

T.Karino

Sat. Aug 27, 01:00:00
01:15:15
15:07

1331
Vol.116talaShikaku45x31

Extra

Guten

Sat. Aug 13, 13:00:00
13:13:50
13:46

496
Vol.115jyokunNurikabe45x31

Extra

Asaokitan

Sun. Jul 31, 13:00:00
13:13:25
13:20

741
Vol.114ajiYajilin45x31

Extra

aiko

Sun. Jul 17, 13:00:00
13:13:31
13:21

1494
Vol.113pisacaSlitherlink45x31

Extra

Casty

Thu. Jun 30, 13:00:00
13:11:49
11:44

1289
Vol.112OLAKEHeyawake45x31

Extra

Guten

Thu. Jun 16, 13:00:00
13:10:45
10:41

415
Vol.111MORAkari45x31

Extra

juno

Thu. Jun 2, 13:00:00
13:08:00
7:31

186
Vol.110kurocchiHashiwokakero41x27

Extra

T.Karino

Fri. May 20, 13:00:00
13:09:39
09:29

423
Vol.109roroboMasyu45x31

Extra

Casty

Fri. Apr 22, 13:00:00
13:10:32
10:28

1268
Vol.108detunedSudoku9x9

Extra

SAKAMOTO, Nobuyuki

Fri. Apr 8, 13:00:00
13:04:12
4:02

128
Vol.108ZitiKakuro31x21

Extra

Ryohei Nakai

Fri. Apr 8, 13:00:00
13:13:53
13:46

459
Vol.108sunanekoroomNumberlink36x20

Extra

POTS

Fri. Apr 8, 13:00:00
13:04:47
4:43

690
Vol.107nyoroppyiShikaku45x31

Extra

Ryohei Nakai

Fri. Mar 18, 13:00:00
13:21:29
21:25

275
Vol.106motrisNurikabe45x31

Extra

juno

Fri. Mar 4, 13:00:00
13:15:16
15:07

1300
Vol.105pocketYajilin45x31

Extra

Guten

Fri. Feb 18, 13:00:00
13:16:13
16:02

1340
Vol.104MellowMelonHitori17x17

Extra

nyoroppyi

Fri. Feb 4, 13:00:00
13:08:04
7:59

213
Vol.103SphinxSlitherlink45x31

Extra

Guten

Fri. Jan 21, 13:00:00
13:19:56
19:49

1506
Vol.102H.JoHeyawake45x31

Extra

aiko

Fri. Jan 7, 13:00:00
13:12:13
11:26

424

Puzzle Championships 2010

VolChampions
TypeSizeLevelAuthorPublished (UTC)
Registered (UTC)
Time
Steps
Vol.101MORAkari45x31

Extra

T.Karino

Fri. Dec 24, 13:00:00
13:04:09
3:49

213
Vol.100motrisKakuro31x21

Extra

T.Karino

Fri. Dec 10, 13:00:00
13:14:32
14:24

885
Vol.100CastyNumberlink36x20

Extra

Guten

Fri. Dec 10, 13:00:00
13:06:42
6:01

818
Vol.100orioriHashiwokakero41x27

Extra

45

Fri. Dec 10, 13:00:00
13:20:21
20:14

615
Vol.99CaltanMasyu45x31

Extra

juno

Fri. Nov 26, 13:00:00
13:18:39
18:28

1378
Vol.98talaShikaku45x31

Extra

T.Karino

Fri. Nov 12, 13:00:00
13:13:27
13:22

465
Vol.97moka36Nurikabe45x31

Extra

Ogawa Minori

Fri. Oct 29, 13:00:00
13:14:11
13:52

756
Vol.96 hijiringYajilin45x31

Extra

YukiHiro

Fri. Oct 15, 13:00:00
13:28:35
28:27

1915
Vol.95ajiSlitherlink45x31

Extra

Momotereu

Fri. Oct 1, 13:00:00
13:15:30
15:14

1491
Vol.94pocketHeyawake45x31

Extra

Guten

Fri. Sep 17, 13:00:00
13:08:19
8:01

443
Vol.93AlanHitori17x17

Extra

Casty

Fri. Sep 3, 13:00:00
13:04:43
4:30

90
Vol.92detunedSudoku9x9

Extra

Kumotan

Fri. Aug 20, 13:00:00
13:04:26
4:17

77
Vol.91komami-Akari45x31

Extra

juno

Fri. Aug 6, 13:00:00
13:07:48
7:44

378
Vol.90uri@nowMasyu45x31

Extra

Guten

Fri. Jul 23, 13:00:00
13:14:42
14:34

1334
Vol.89catmaskHashiwokakero41x27

Extra

45

Fri. Jul 9, 13:00:00
13:17:44
17:31

602
Vol.88sinh9Numberlink36x20

Extra

Casty

Fri. Jun 25, 13:00:00
13:07:31
7:28

918
Vol.87SphinxKakuro31x21

Extra

akasyo

Fri. Jun 11, 13:00:00
13:20:12
20:05

653
Vol.86MellowMelonShikaku45x31

Extra

Ogawa Minori

Fri. May 28, 13:00:00
13:12:58
12:51

593
Vol.85MOMONurikabe45x31

Extra

Guten

Fri. May 14, 13:00:00
13:13:36
13:27

1566
Vol.84mearasSlitherlink45x31

Extra

Komieda

Fri. Apr 30, 13:00:00
13:15:54
15:47

1410
Vol.83H.JoHeyawake45x31

Extra

NyanBaz

Fri. Apr 16, 13:00:00
13:12:08
11:52

435
Vol.82nyoroppyiAkari45x31

Extra

aiko

Fri. Apr 2, 13:00:00
13:07:49
7:36

762
Vol.81kurocchiHashiwokakero41x27

Extra

T.Karino

Fri. Mar 19, 13:00:00
13:15:25
13:13

451
Vol.80roroboMasyu45x31

Extra

crimson

Fri. Mar 5, 13:00:00
13:11:14
11:10

1370
Vol.79MelvyHitori17x17

Extra

45

Fri. Feb 19, 13:00:00
13:06:25
6:19

80
Vol.78ZitiKakuro31x21

Extra

T.Karino

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

492
Vol.77merrilinShikaku45x31

Extra

Ryohei Nakai

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

806
Vol.76sunanekoroomNumberlink36x20

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.75hijiringNurikabe45x31

Extra

aiko

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

1336
Vol.74SphinxSudoku9x9

Extra

Casty

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

81
Vol.73takkkunSlitherlink45x31

Extra

aiko

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

1496
Vol.72ajiHeyawake45x31

Extra

OLAKE

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

1462
Vol.71SphinxAkari45x31

Extra

crimson

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

613
Vol.70catmaskHashiwokakero41x27

Extra

45

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

562
Vol.69ajiMasyu45x31

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.67moka36Hitori17x17

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.