Ota Winter 2026

Natsuki Rokutan put on a masterclass at the Ota Ward Plaza on January 25, 2026, topping 108 contenders to secure the premier 3x3x3 Cube title with a winning average of 6.80 seconds after posting a best single of 5.95 seconds. The victory anchored a full schedule of competition in Ota, Tokyo, Japan, where 110 competitors gathered across four events and eight rounds. Behind the smooth execution of the tournament was a dedicated team of organizers, delegates, and staff members who kept the schedule moving punctually from morning heats to late-afternoon finals.

The operations team delivered an efficient cubing competition across all eight rounds, ensuring scramblers, runners, and judges cycled through stations seamlessly. Running an event of this scale in a single day demands precision, and the staff at Ota Winter 2026 created the structured conditions necessary for top-tier speedcubing. From managing the equipment tables to verifying score sheets for the World Cube Association database, the volunteers established an environment where athletes could focus entirely on their solves.

In the main 3x3x3 Cube contest, Rokutan maintained composure through two rounds of pressure to take the top step. Wataru Takamiya followed in second place with an average of 7.75 seconds, while Shu Ogawa locked in third place with an 8.34 mark. The final 3x3 results confirmed the depth of the field, showcasing tight margins throughout the top tier of solvers who navigated the standard Rubik's Cube with exceptional turning speed.

Rokutan extended that dominance into the 3x3x3 One-Handed division, claiming a second championship at Ota Winter 2026. Facing a field of 59 competitors, Rokutan secured first place with an average of 10.94 seconds and a best single solve of 10.37 seconds. Kantaro Sakamoto finished as runner-up with an average of 11.45 seconds, while Masaya Nakamoto earned third place on the podium with an 11.71 result.

Away from the podium battles, several competitors achieved remarkable milestones across multiple disciplines. Harenosuke Eguchi took on four events, logging a first ever attempt at 5x5x5 Cube with a time of 2:47.73, making a first Clock attempt with an 8.33 mark, and setting a 3x3x3 One-Handed personal best of 21.14 seconds, which was 40.6 percent faster than their previous mark. Ryusei Takami also tackled four events, recording a first 5x5x5 Cube attempt of 2:30.61, a Clock personal best of 17.46 seconds that improved on their previous mark by 39 percent, and a 3x3x3 One-Handed personal best of 27.56 seconds that was 34.1 percent faster.

Mirei Morioka entered four events, posting a first attempt in 3x3x3 One-Handed at 38.43 seconds, dropping their Clock personal best by 33.7 percent down to 10.13 seconds, and trimming their 5x5x5 Cube personal best by 3.8 percent to 1:59.15. Kota Aruga contested four events, registering first attempts in Clock at 13.51 seconds and 5x5x5 Cube at 2:41.14 while cutting their 3x3x3 One-Handed personal best by 25.5 percent to 16.76 seconds. Inyoung Oh recorded a first 5x5x5 Cube attempt of 2:30.85 and dropped their 3x3x3 One-Handed personal best by 25.3 percent to 18.98 seconds, while Yusei Kawasaki took on four events, making first attempts in Clock at 17.64 seconds and 5x5x5 Cube at 1:20.18 alongside a 3x3x3 Cube personal best of 9.33 seconds.

The big-cube contest highlighted the program as Shu Ogawa conquered the 5x5x5 Cube event with an average of 54.20 seconds, highlighted by a sharp single of 49.44 seconds in a field of 58 competitors. Takumi Kawazoe took second place on the podium with an average of 55.80 seconds, while Sota Nakamura secured third place with a 57.56 mark. The event tested stamina and spatial awareness across two rounds of play.

The Clock event delivered rapid times and international variety, featuring 58 competitors. Wataru Takamiya took first place with an average of 4.19 seconds and a best single of 3.73 seconds. Jervis Yeo of Singapore earned second place with an average of 4.68 seconds, securing an international podium finish, while Yuhi Endo claimed third place with a 6.01 average. The smooth rotation between mechanical puzzles illustrated the wide breadth of speed cubing skills present on the floor.

With 11 podium finishes for Japan and one for Singapore across four events, Ota Winter 2026 concluded as a successful showcase of skill and community dedication. The organizers and venue coordinators ensured every round stayed on schedule throughout the day, providing an exemplary platform for both established stars and improving solvers at this official WCA competition.

110名の選手が集結した2026年シーズンの序盤戦、1月25日に東京都大田区の大田区民プラザにてWCA公認のルービックキューブ大会であるOta Winter 2026が開催された。新年のスタートダッシュを狙う強豪から自己記録の更新を目指すプレイヤーまで、多くのスピードキュービング愛好者が一堂に会し、計4種目8ラウンドにわたって熱い戦いが繰り広げられた。

大会の目玉となった3x3x3 Cube部門には108名がエントリーした。決勝ではNatsuki Rokutan（六反捺稀）が安定したハイレベルな試技を揃え、平均6.80を記録して見事に優勝を果たした。2位には平均7.75のWataru Takamiya（髙宮径）、3位には平均8.34のShu Ogawa（小川柊）が入り、ハイペースな記録争いで会場を沸かせた。

Natsuki Rokutan（六反捺稀）の快進撃は3x3x3 One-Handed部門でも続いた。片手のみで揃えるこの過酷な種目において、59名が競い合う中で決勝平均10.94をマークして2冠を達成した。2位にはKantaro Sakamoto（坂本貫太郎）が平均11.45で続き、3位にはMasaya Nakamoto（中本誠也）が平均11.71で表彰台に登った。

58名が参加した大型パズルの5x5x5 Cube部門では、Shu Ogawa（小川柊）が強さを発揮した。決勝で平均54.20を叩き出して堂々の優勝を飾っている。2位にはTakumi Kawazoe（川添匠）が平均55.80でつけ、3位にはSota Nakamura（中村荘太）が平均57.56で入賞を果たすなど、上位陣が50秒台のハイレベルなタイムで競り合った。

独特の機構を持つClock部門でも白熱の試技が展開された。58名が出場した同種目では、Wataru Takamiya（髙宮径）が決勝平均4.19の素晴らしいタイムを記録して優勝を飾った。2位にはシンガポールのJervis Yeoが平均4.68で食い込み、3位にはYuhi Endo（遠藤紬斐）が平均6.01で表彰台に名を連ねた。

記録シートの数字の向こう側では、出場選手たちの目覚ましい成長も見られた。4種目に出場したCiao-Yin Yang（楊喬尹）はClockで従来の自己記録を49.7パーセント縮める11.36を樹立し、3x3x3 One-Handedでも21.9パーセント短縮となる29.75を記録した。Yuma Yamaki（八巻悠真）はClockへの初挑戦で12.08を記録したほか、3x3x3 Cubeで従来のベストから20.9パーセント短縮の7.89をマークしている。Drystan Joseph Dequina Quintoは5x5x5 Cubeに初挑戦して1分31秒21を残し、3x3x3 Cubeでも自己記録を18パーセント更新する8.97を記録した。

さらにGo Nakamura（中村豪）はClockへの初挑戦で10.47を記録し、5x5x5 Cubeでも従来の自己ベストを17.9パーセント更新する1分08秒48を叩き出した。Kyoshiro Sakamoto（坂本恭志郞）はClock初挑戦で6.99の好タイムを残し、3x3x3 Cubeでも14.8パーセント短縮となる9.87を記録。Ryoji Kobayashi（小林龍慈）は3x3x3 One-Handedへ初挑戦して30.98をマークし、3x3x3 Cubeでも12.3パーセント縮める12.15を記録するなど、各自が確かな前進を見せた。

2026年の新シーズン序盤を飾ったOta Winter 2026は、日本勢11枠、シンガポール勢1枠の表彰台確定をもって幕を閉じた。大田区民プラザに集った110名のキューバーたちが見せた熱気と自己ベストへの挑戦は、これから本格化する競技シーズンの充実を予感させる一日となった。