The winner of the puzzle championship vol. 164 is pisaca! Congratulations!
The next puzzle championship will be Sun. Jun 30, 13:00 (UTC). The puzzle will be a 18x18 Extra Ripple Effect created by aiko.
- Result of the Puzzle Championship 2013
- Result of the Puzzle Championship 2012
- Result of the Puzzle Championship 2011
- Result of the Puzzle Championship 2010
- Result of the Puzzle Championship 2009
- Result of the Puzzle Championship 2008
- Result of the Puzzle Championship 2007
- Rules of nikoli.com Puzzle Championship
- When you become a champion?
Puzzle Championships 2013
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.
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.164 | pisaca |  Shakashaka | 45x31 | Extra | Guten | Sun. Jun 16, 13:00:00 | 756 |
| Vol.163 | kezukezu |  Akari | 45x31 | Extra | the ax and sword | Sun. Jun 2, 13:00:00 | 498 |
| Vol.162 | nyoroppyi |  Nurikabe | 45x31 | Extra | Guten | Sun. May 19, 13:00:00 | 1391 |
| Vol.161 | rorobo |  Masyu | 45x31 | Extra | aiko | Sun. May 5, 13:00:00 | 1408 |
| Vol.160 | AnchorNavy |  Heyawake | 45x31 | Extra | bay wolf Jr | Fri. Apr 19, 03:30:00 | 1859 |
| Vol.159 | vanillaice |  Shikaku | 45x31 | Extra | aiko | Fri. Apr 5, 03:30:00 | 844 |
| Vol.158 | BKTN |  Hitori | 17x17 | Extra | cherry | Fri. Mar 22, 03:30:00 | 81 |
| Vol.157 | deu |  Kakuro | 31x21 | Extra | akasyo | Fri. Mar 8, 03:30:00 | 579 |
| Vol.156 | mizuike |  Yajilin | 45x31 | Extra | T.Karino | Fri. Feb 22, 13:00:00 | 1599 |
| Vol.155 | motty |  Slitherlink | 45x31 | Extra | aiko | Fri. Feb 8, 13:00:00 | 1513 |
| Vol.154 | sinh9 |  Numberlink | 36x20 | Extra | Ogawa Minori | Fri. Jan 25, 13:00:00 | 794 |
| Vol.153 | MOMO |  Hashiwokakero | 41x27 | Extra | aiko | Fri. Jan 11, 13:00:00 | 514 |
Puzzle Championships 2012
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.152 | MOMO | Akari | 45x31 | Extra | Guten | Sat. Dec 29, 01:00:00 | 518 |
| Vol.152 | jiatjiat | Masyu | 45x31 | Extra | YukiHiro | Sat. Dec 29, 01:00:00 | 1216 |
| Vol.152 | norikin |  Ripple Effect | 18x18 | Extra | aiko | Sat. Dec 29, 01:00:00 | 308 |
| Vol.151 | wrhtnarz | Shakashaka | 45x31 | Extra | aiko | Sat. Dec 15, 01:00:00 | 986 |
| Vol.150 | kurocchi | Heyawake | 45x31 | Extra | the ax and sword | Sat. Dec 1, 01:00:00 | 1870 |
| Vol.149 | doctor-masa | Shikaku | 45x31 | Extra | T.Karino | Sun. Nov 18, 13:00:00 | 510 |
| Vol.148 | sinh9 | Hitori | 17x17 | Extra | nyoroppyi | Sun. Nov 4, 13:00:00 | 131 |
| Vol.147 | Ziti | Kakuro | 31x21 | Extra | T.Karino | Sat. Oct 20, 13:00:00 | 560 |
| Vol.146 | MellowMelon | Nurikabe | 45x31 | Extra | cubic function | Sat. Oct 6, 13:00:00 | 1215 |
| Vol.145 | RichardRoe | Yajilin | 45x31 | Extra | aspirin | Fri. Sep 21, 13:00:00 | 2485 |
| Vol.144 | penroke | Slitherlink | 45x31 | Extra | Guten | Fri. Sep 7, 13:00:00 | 1476 |
| Vol.143 | hiro-ym | Akari | 45x31 | Extra | nyoroppyi | Fri. Aug 24, 13:00:00 | 115 |
| Vol.142 | aji | Hashiwokakero | 41x27 | Extra | Guten | Fri. Aug 10, 13:00:00 | 445 |
| Vol.141 | detuned | Masyu | 45x31 | Extra | aiko | Sun. Jul 29, 13:00:00 | 1318 |
| Vol.140 | NTKS | Ripple Effect | 18x18 | Extra | Turing-Joe Jr. | Sun. Jul 15, 13:00:00 | 322 |
| Vol.140 | willwc |  Sudoku | 9x9 | Extra | aspirin | Sun. Jul 15, 13:00:00 | 113 |
| Vol.140 | TuringJoe_Jr. | Numberlink | 36x20 | Extra | Guten | Sun. Jul 15, 13:00:00 | 836 |
| Vol.139 | Spelvin | Shikaku | 45x31 | Extra | Ogawa Minori | Sun. Jul 1, 13:00:00 | 439 |
| Vol.138 | bf81 | Heyawake | 45x31 | Extra | cubic function | Sun. Jun 17, 13:00:00 | 440 |
| Vol.137 | motris | Nurikabe | 45x31 | Extra | Ogawa Minori | Sun. Jun 3, 13:00:00 | 1230 |
| Vol.136 | mizuike | Yajilin | 45x31 | Extra | Pencil Rocket | Sun. May 20, 13:00:00 | 1841 |
| Vol.135 | moka36 | Hitori | 17x17 | Extra | Hammy | Sun. May 6, 13:00:00 | 83 |
| Vol.134 | volxa | Slitherlink | 45x31 | Extra | Pencil Rocket | Sun. Apr 22, 13:00:00 | 1485 |
| Vol.133 | deu | Kakuro | 31x21 | Extra | -4 | Sun. Apr 8, 13:00:00 | 527 |
| Vol.132 | nyoroppyi | Akari | 45x31 | Extra | Casty | Fri. Mar 23, 12:00:00 | 531 |
| Vol.131 | wakky | Hashiwokakero | 41x27 | Extra | cherry | Fri. Mar 9, 12:00:00 | 623 |
| Vol.130 | Caltan | Masyu | 45x31 | Extra | Pencil Rocket | Fri. Feb 24, 12:00:00 | 1558 |
| Vol.129 | vanillaice | Shikaku | 45x31 | Extra | cubic function | Fri. Feb 10, 12:00:00 | 895 |
| Vol.128 | pisaca | Heyawake | 45x31 | Extra | aiko | Fri. Jan 27, 12:00:00 | 419 |
| Vol.127 | Kota | Sudoku | 9x9 | Extra | aspirin | Fri. Jan 13, 12:00:00 | 62 |
| Vol.126 | rorobo | Nurikabe | 45x31 | Extra | Pencil Rocket | Fri. Jan 6, 12:00:00 | 1311 |
Puzzle Championships 2011
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.125 | tarotaro | Numberlink | 36x20 | Extra | Guten | Fri. Dec 16, 12:00:00 | 744 |
| Vol.125 | Kenja | Numberlink | 36x20 | Extra | POTS | Fri. Dec 16, 12:00:00 | 834 |
| Vol.124 | vanillaice | Yajilin | 45x31 | Extra | aspirin | Fri. Dec 2, 12:00:00 | 2447 |
| Vol.123 | uri@now | Slitherlink | 45x31 | Extra | T.Karino | Fri. Nov 18, 13:00:00 | 1273 |
| Vol.122 | NTKS | Ripple Effect | 18x18 | Extra | T.Karino | Fri. Nov 4, 13:00:00 | 323 |
| Vol.121 | moka36 | Kakuro | 31x21 | Extra | aiko | Sat. Oct 22, 01:00:00 | 520 |
| Vol.120 | mizuike | Akari | 45x31 | Extra | Guten | Sat. Oct 8, 01:00:00 | 589 |
| Vol.119 | MOMO | Hashiwokakero | 41x27 | Extra | cherry | Sat. Sep 24, 01:00:00 | 565 |
| Vol.118 | wakky | Hitori | 17x17 | Extra | Guten | Sat. Sep 10, 01:00:00 | 83 |
| Vol.117 | RichardRoe | Masyu | 45x31 | Extra | T.Karino | Sat. Aug 27, 01:00:00 | 1331 |
| Vol.116 | tala | Shikaku | 45x31 | Extra | Guten | Sat. Aug 13, 13:00:00 | 496 |
| Vol.115 | jyokun | Nurikabe | 45x31 | Extra | Asaokitan | Sun. Jul 31, 13:00:00 | 741 |
| Vol.114 | aji | Yajilin | 45x31 | Extra | aiko | Sun. Jul 17, 13:00:00 | 1494 |
| Vol.113 | pisaca | Slitherlink | 45x31 | Extra | Casty | Thu. Jun 30, 13:00:00 | 1289 |
| Vol.112 | OLAKE | Heyawake | 45x31 | Extra | Guten | Thu. Jun 16, 13:00:00 | 415 |
| Vol.111 | MOR | Akari | 45x31 | Extra | juno | Thu. Jun 2, 13:00:00 | 186 |
| Vol.110 | kurocchi | Hashiwokakero | 41x27 | Extra | T.Karino | Fri. May 20, 13:00:00 | 423 |
| Vol.109 | rorobo | Masyu | 45x31 | Extra | Casty | Fri. Apr 22, 13:00:00 | 1268 |
| Vol.108 | detuned | Sudoku | 9x9 | Extra | SAKAMOTO, Nobuyuki | Fri. Apr 8, 13:00:00 | 128 |
| Vol.108 | Ziti | Kakuro | 31x21 | Extra | Ryohei Nakai | Fri. Apr 8, 13:00:00 | 459 |
| Vol.108 | sunanekoroom | Numberlink | 36x20 | Extra | POTS | Fri. Apr 8, 13:00:00 | 690 |
| Vol.107 | nyoroppyi | Shikaku | 45x31 | Extra | Ryohei Nakai | Fri. Mar 18, 13:00:00 | 275 |
| Vol.106 | motris | Nurikabe | 45x31 | Extra | juno | Fri. Mar 4, 13:00:00 | 1300 |
| Vol.105 | Yajilin | 45x31 | Extra | Guten | Fri. Feb 18, 13:00:00 | 1340 | |
| Vol.104 | MellowMelon | Hitori | 17x17 | Extra | nyoroppyi | Fri. Feb 4, 13:00:00 | 213 |
| Vol.103 | Sphinx | Slitherlink | 45x31 | Extra | Guten | Fri. Jan 21, 13:00:00 | 1506 |
| Vol.102 | H.Jo | Heyawake | 45x31 | Extra | aiko | Fri. Jan 7, 13:00:00 | 424 |
Puzzle Championships 2010
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.101 | MOR | Akari | 45x31 | Extra | T.Karino | Fri. Dec 24, 13:00:00 | 213 |
| Vol.100 | motris | Kakuro | 31x21 | Extra | T.Karino | Fri. Dec 10, 13:00:00 | 885 |
| Vol.100 | Casty | Numberlink | 36x20 | Extra | Guten | Fri. Dec 10, 13:00:00 | 818 |
| Vol.100 | oriori | Hashiwokakero | 41x27 | Extra | 45 | Fri. Dec 10, 13:00:00 | 615 |
| Vol.99 | Caltan | Masyu | 45x31 | Extra | juno | Fri. Nov 26, 13:00:00 | 1378 |
| Vol.98 | tala | Shikaku | 45x31 | Extra | T.Karino | Fri. Nov 12, 13:00:00 | 465 |
| Vol.97 | moka36 | Nurikabe | 45x31 | Extra | Ogawa Minori | Fri. Oct 29, 13:00:00 | 756 |
| Vol.96 | hijiring | Yajilin | 45x31 | Extra | YukiHiro | Fri. Oct 15, 13:00:00 | 1915 |
| Vol.95 | aji | Slitherlink | 45x31 | Extra | Momotereu | Fri. Oct 1, 13:00:00 | 1491 |
| Vol.94 | Heyawake | 45x31 | Extra | Guten | Fri. Sep 17, 13:00:00 | 443 | |
| Vol.93 | Alan | Hitori | 17x17 | Extra | Casty | Fri. Sep 3, 13:00:00 | 90 |
| Vol.92 | detuned | Sudoku | 9x9 | Extra | Kumotan | Fri. Aug 20, 13:00:00 | 77 |
| Vol.91 | komami- | Akari | 45x31 | Extra | juno | Fri. Aug 6, 13:00:00 | 378 |
| Vol.90 | uri@now | Masyu | 45x31 | Extra | Guten | Fri. Jul 23, 13:00:00 | 1334 |
| Vol.89 | catmask | Hashiwokakero | 41x27 | Extra | 45 | Fri. Jul 9, 13:00:00 | 602 |
| Vol.88 | sinh9 | Numberlink | 36x20 | Extra | Casty | Fri. Jun 25, 13:00:00 | 918 |
| Vol.87 | Sphinx | Kakuro | 31x21 | Extra | akasyo | Fri. Jun 11, 13:00:00 | 653 |
| Vol.86 | MellowMelon | Shikaku | 45x31 | Extra | Ogawa Minori | Fri. May 28, 13:00:00 | 593 |
| Vol.85 | MOMO | Nurikabe | 45x31 | Extra | Guten | Fri. May 14, 13:00:00 | 1566 |
| Vol.84 | mearas | Slitherlink | 45x31 | Extra | Komieda | Fri. Apr 30, 13:00:00 | 1410 |
| Vol.83 | H.Jo | Heyawake | 45x31 | Extra | NyanBaz | Fri. Apr 16, 13:00:00 | 435 |
| Vol.82 | nyoroppyi | Akari | 45x31 | Extra | aiko | Fri. Apr 2, 13:00:00 | 762 |
| Vol.81 | kurocchi | Hashiwokakero | 41x27 | Extra | T.Karino | Fri. Mar 19, 13:00:00 | 451 |
| Vol.80 | rorobo | Masyu | 45x31 | Extra | crimson | Fri. Mar 5, 13:00:00 | 1370 |
| Vol.79 | Melvy | Hitori | 17x17 | Extra | 45 | Fri. Feb 19, 13:00:00 | 80 |
| Vol.78 | Ziti | Kakuro | 31x21 | Extra | T.Karino | Fri. Feb 5, 13:00:00 | 492 |
| Vol.77 | merrilin | Shikaku | 45x31 | Extra | Ryohei Nakai | Fri. Jan 22, 13:00:00 | 806 |
| Vol.76 | sunanekoroom | Numberlink | 36x20 | Extra | Guten | Fri. Jan 8, 13:00:00 | 684 |
Puzzle Championships 2009
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.75 | hijiring | Nurikabe | 45x31 | Extra | aiko | Fri. Dec 25, 13:00:00 | 1336 |
| Vol.74 | Sphinx | Sudoku | 9x9 | Extra | Casty | Fri. Dec 11, 13:00:00 | 81 |
| Vol.73 | takkkun | Slitherlink | 45x31 | Extra | aiko | Fri. Nov 27, 13:00:00 | 1496 |
| Vol.72 | aji | Heyawake | 45x31 | Extra | OLAKE | Fri. Nov 13, 13:00:00 | 1462 |
| Vol.71 | Sphinx | Akari | 45x31 | Extra | crimson | Fri. Oct 30, 13:00:00 | 613 |
| Vol.70 | catmask | Hashiwokakero | 41x27 | Extra | 45 | Fri. Oct 16, 13:00:00 | 562 |
| Vol.69 | aji | Masyu | 45x31 | Extra | cubic function | Fri. Oct 2, 13:00:00 | 1526 |
| Vol.68 | Psyho | Sudoku | 9x9 | Extra | Casty | Fri. Sep 18, 13:00:00 | 110 |
| Vol.67 | moka36 | Hitori | 17x17 | Extra | Casty | Fri. Sep 4, 13:00:00 | 86 |
| Vol.66 | uri@now | Kakuro | 31x21 | Extra | aiko | Fri. Aug 21, 13:00:00 | 513 |
| Vol.65 | monkeyfish | Shikaku | 45x31 | Extra | Ogawa Minori | Sat. Aug 1, 04:00:00 | 489 |
| Vol.65 | motris | Nurikabe | 45x31 | Extra | juno | Sat. Aug 1, 04:00:00 | 1304 |
| Vol.65 | H.Jo | Slitherlink | 45x31 | Extra | Komieda | Sat. Aug 1, 04:00:00 | 1510 |
| Vol.64 | takkkun | Heyawake | 45x31 | Extra | OLAKE | Fri. Jul 24, 13:00:00 | 461 |
| Vol.63 | hijiring | Akari | 45x31 | Extra | Miya | Fri. Jul 10, 13:00:00 | 500 |
| Vol.62 | MOMO | Hashiwokakero | 41x27 | Extra | 45 | Fri. Jun 26, 13:00:00 | 577 |
| Vol.61 | Sphinx | Masyu | 45x31 | Extra | Komieda | Fri. Jun 12, 13:00:00 | 1326 |
| Vol.60 | Ziti | Kakuro | 31x21 | Extra | -4 | Fri. May 29, 13:00:00 | 768 |
| Vol.59 | MOR | Hitori | 17x17 | Extra | 45 | Fri. May 15, 13:00:00 | 81 |
| Vol.58 | hiraku | Shikaku | 45x31 | Extra | aiko | Fri. May 1, 13:00:00 | 365 |
| Vol.57 | oma | Sudoku | 9x9 | Extra | Casty | Fri. Apr 17, 13:00:00 | 96 |
| Vol.56 | Hammy | Nurikabe | 45x31 | Extra | Casty | Fri. Apr 3, 13:00:00 | 1288 |
| Vol.55 | uri | Slitherlink | 45x31 | Extra | aiko | Fri. Mar 20, 13:00:00 | 1407 |
| Vol.54 | moku | Heyawake | 45x31 | Extra | Komieda | Fri. Mar 6, 13:00:00 | 1267 |
| Vol.53 | komami- | Akari | 45x31 | Extra | aiko | Fri. Feb 20, 13:00:00 | 678 |
| Vol.52 | nyoroppyi | Hashiwokakero | 41x27 | Extra | 45 | Fri. Feb 6, 13:00:00 | 672 |
| Vol.51 | Kitakaze | Masyu | 45x31 | Extra | akasyo | Fri. Jan 23, 13:00:00 | 1341 |
| Vol.50 | H.Jo | Kakuro | 31x21 | Extra | akasyo | Fri. Jan 9, 13:00:00 | 562 |
Puzzle Championships 2008
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.49 | nyoroppyi | Shikaku | 45x31 | Extra | Casty | Sat. Dec 27, 04:00:00 | 280 |
| Vol.49 | polake | Heyawake | 45x31 | Extra | HIRO FUKUSHIMA | Sat. Dec 27, 04:00:00 | 427 |
| Vol.49 | volxa | Nurikabe | 45x31 | Extra | juno | Sat. Dec 27, 04:00:00 | 1360 |
| Vol.48 | motris | Sudoku | 9x9 | Extra | red-magician | Dec 12, 13:00:00 | 131 |
| Vol.47 | hijiring | Akari | 45x31 | Hard | Casty | Nov 28, 13:00:00 | 560 |
| Vol.46 | aji | Hashiwokakero | 41x27 | Extra | 45 | Nov 14, 13:00:00 | 562 |
| Vol.45 | MOR | Hitori | 17x17 | Extra | Kumotan | Oct 31, 13:00:00 | 80 |
| Vol.44 | aji | Masyu | 45x31 | Extra | Casty | Oct 17, 13:00:00 | 1288 |
| Vol.43 | volxa | Kakuro | 31x21 | Extra | akasyo | Oct 3, 13:00:00 | 530 |
| Vol.42 | jyokun | Nurikabe | 45x31 | Extra | juno | Sep 19, 13:00:00 | 755 |
| Vol.41 | sirousa | Shikaku | 45x31 | Extra | Casty | Sep 5, 13:00:00 | 304 |
| Vol.40 | MOR | Akari | 45x31 | Extra | juno | Aug 22, 13:00:00 | 186 |
| Vol.39 | volxa | Slitherlink | 45x31 | Extra | crimson | Aug 8, 13:00:00 | 1355 |
| Vol.38 | jyokun | Heyawake | 45x31 | Extra | Casty | Jul 23, 13:00:00 | 437 |
| Vol.37 | lozz | Masyu | 45x31 | Extra | NyanBaz | Jul 13, 13:00:00 | 1350 |
| Vol.36 | Ziti | Kakuro | 31x21 | Extra | akasyo | Jul 4, 13:00:00 | 679 |
| Vol.35 | detuned | Sudoku | 9x9 | Extra | Hone Rokuo | Jun 20, 13:00:00 | 89 |
| Vol.34 | gorish | Nurikabe | 45x31 | Extra | MINE | Jun 6, 13:00:00 | 1308 |
| Vol.33 | Malthus | Shikaku | 45x31 | Extra | aspirin | May 23, 13:00:00 | 79 |
| Vol.32 | H.Jo | Hitori | 17x17 | Extra | OLAKE | May 9, 13:00:00 | 83 |
| Vol.31 | aji | Slitherlink | 45x31 | Extra | Komieda | Apr 25, 13:00:00 | 1579 |
| Vol.30 | H.Jo | Akari | 45x31 | Hard | akasyo | Apr 11, 13:00:00 | 181 |
| Vol.29 | moku | Heyawake | 45x31 | Extra | NyanBaz | Mar 28, 13:00:00 | 1559 |
| Vol.28 | Kitakaze | Masyu | 45x31 | Extra | Miya | Mar 14, 13:00:00 | 1267 |
| Vol.27 | H.Jo | Kakuro | 31x21 | Extra | osakana | Feb 29, 13:00:00 | 493 |
| Vol.26 | Hammy | Nurikabe | 45x31 | Extra | red-magician | Feb 15, 13:00:00 | 1308 |
| Vol.25 | H.Jo | Shikaku | 45x31 | Extra | Casty | Feb 1, 13:00:00 | 301 |
| Vol.24 | uri | Slitherlink | 45x31 | Extra | Yuichi Saito | Jan 18, 13:00:00 | 1290 |
| Vol.23 | komami- | Akari | 45x31 | Hard | crimson | Jan 4, 13:00:00 | 488 |
Puzzle Championships 2007
| Vol | Champions | Type | Size | Level | Author | Published (UTC) Registered (UTC) Time | Steps |
|---|---|---|---|---|---|---|---|
| Vol.22 | Kazunegi | Heyawake | 36x20 | Extra | aspirin | Dec 21, 13:00:00 | 238 |
| Vol.21 | tarotaro | Sudoku | 9x9 | Extra | red-magician | Dec 7, 13:00:00 | 78 |
| Vol.20 | Hugo | Kakuro | 31x21 | Hard | Komieda | Nov 23, 13:00:00 | 464 |
| Vol.20 | aji | Shikaku | 45x31 | Extra | Casty | Nov 23, 13:00:00 | 341 |
| Vol.20 | Hammy | Nurikabe | 45x31 | Extra | red-magician | Nov 23, 13:00:00 | 1328 |
| Vol.19 | jyokun | Hitori | 17x17 | Extra | mimic | Nov 9, 13:00:00 | 78 |
| Vol.18 | maysure | Nurikabe | 45x31 | Extra | aspirin | Oct 26, 13:00:00 | 779 |
| Vol.17 | uri | Kakuro | 31x21 | Extra | crimson | Oct 12, 13:00:00 | 493 |
| Vol.16 | maysure | Slitherlink | 45x31 | Extra | OX | Sep 28, 13:00:00 | 1311 |
| Vol.15 | maysure | Akari | 45x31 | Hard | Casty | Sep 14, 13:00:00 | 270 |
| Vol.14 | maysure | Hitori | 17x17 | Extra | mimic | Aug 31, 13:00:00 | 79 |
| Vol.13 | Hugo | Nurikabe | 45x31 | Extra | juno | Aug 17, 13:00:00 | 1287 |
| Vol.12 | jyokun | Heyawake | 45x31 | Extra | NyanBaz | Aug 3, 13:00:00 | 439 |
| Vol.11 | tarotaro | Kakuro | 31x21 | Extra | -4 | Jul 20, 13:00:00 | 493 |
| Vol.10 | gori.sh | Slitherlink | 45x31 | Extra | crimson | Jul 6, 13:00:00 | 1878 |
| Vol.9 | uri | Akari | 45x31 | Extra | mimic | Jun 22, 13:00:00 | 181 |
| Vol.8 | Hammy | Hitori | 17x17 | Extra | mimic | Jun 8, 13:00:00 | 129 |
| Vol.7 | motris | Sudoku | 9x9 | Extra | TAKEI Daisuke | May 25, 13:00:00 | 110 |
| Vol.6 | aji | Nurikabe | 45x31 | Extra | aspirin | May 11, 13:00:00 | 1295 |
| Vol.5 | moku | Heyawake | 45x31 | Extra | OX | Apr 27, 13:00:00 | 1451 |
| Vol.4 | uri | Slitherlink | 45x31 | Hard | aspirin | Apr 13, 13:00:00 | 1283 |
| Vol.3 | FUMIKAZU | Kakuro | 21x13 | Extra | mimic | Mar 30, 13:00:00 | 212 |
| Vol.2 | gori.sh | Akari | 45x31 | Extra | OX | Mar 16, 13:00:00 | 719 |
| Vol.1 | mimic | Nurikabe | 45x31 | Hard | TAKEI Daisuke | Mar 2, 13:00:00 | 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.
