Tokyo Challenge Winter B 2023

Inside the halls of the community venue in Ota, Tokyo, Japan, the focused clack of rotating layers filled the room as competitors prepared for a single, decisive round of action. The atmosphere carried the distinct tension of a condensed championship program where every solve mattered immediately. With only one round scheduled to determine the outcome, participants understood that there would be no safety net or second chances to recover from early mistakes.

The one-day WCA competition on February 12, 2023, gathered 48 participants ready to contest the classic Rubik's Cube. In a format stripped down to pure execution, Tokyo Challenge Winter B 2023 tested consistency under immediate pressure. The gathering brought together seasoned contenders and local hopefuls across the Tokyo region, all aiming to leave their mark on the official standings during an intense winter session.

At the top of the field, Ao Nogami delivered a commanding series of solves to secure first place in the 3x3x3 Cube. Nogami produced a winning average of 7.63 seconds, anchored by a best single time of 6.77 seconds. That sub-seven effort stood as the fastest individual solve across the entire tournament, ensuring that the top step of the podium belonged to Japan.

The battle for the remaining podium spots remained fierce throughout the single round. Mitsuki Gunji claimed second place for Japan with a solid 8.46 average. Amey Gaba of India followed closely in third place, recording an 8.56 average along with a best single of 7.88 seconds to represent his country on the podium. The final table reflected an international presence, with Japan taking two podium positions and India taking one.

Across the broader field, numerous personal milestones emerged beneath the headline podium battle. Seiryu Kato delivered one of the day's standout breakthroughs, setting a new 3x3x3 Cube personal best of 11.63 seconds, which was 66.1 percent faster than their previous mark of 34.32, on the way to a 13th-place finish. Zuozhun Kong of China achieved an 11th-place finish with a personal best single of 10.28 seconds, cutting 40.5 percent off a previous 17.27 best, and also logged a 13.03 average. Aiki Yaginuma improved their personal standard by 37 percent, dropping from 32.89 down to 20.73 seconds for 38th place. Tomoaki Yoshida took 29th place after lowering their personal best by 28 percent to 16.13 seconds.

Other competitors also maximized their single opportunity on the competition floor. Kaname Ito earned 20th place after recording a personal best of 13.82 seconds, an improvement of 15.2 percent over their previous 16.29 benchmark. Tomoaki Sakuma claimed 9th place overall while achieving a personal best single of 11.27 seconds, moving 15.1 percent faster than their prior 13.27 best. Arata Mikami notched 32nd place with a new best of 18.62 seconds, a 5.2 percent trim from 19.65. Akira Tokuse completed the event with a 36th-place finish, putting up a personal best of 17.14 seconds.

The 3x3 results also documented several new official marks across the roster. Yusei Kawasaki compiled a single of 13.56 seconds and an average of 16.63. Ryutaro Miyazaki posted a single of 17.31 alongside a 22.69 average, while Haruhito Hatano finished with an 18.77 single and a 24.29 average. Kiwamu Yokota registered a 21.95 single and a 35.03 average, Toma Terano logged a 28.30 single and a 39.49 average, Masaaki Kobayashi turned in a 29.38 single and a 34.59 average, and Yamato Taki completed solves with a 38.02 single and a 41.47 average. Zirui Wang recorded a single of 10.89 seconds during round play.

As the cubing competition concluded, the single-round format highlighted the demanding nature of speed cubing where every turn counts toward the final ledger. Tokyo Challenge Winter B 2023 demonstrated the depth of the local speedcubing community, celebrating both elite podium finishes and substantial personal gains. With the 2023 winter calendar moving forward, competitors take their newly established marks into the next phase of the competitive season.

48名のスピードキューバーが集結したTokyo Challenge Winter B 2023は、大田区入新井集会室を舞台に熱戦が繰り広げられた。2023年2月12日にOta, Tokyo, Japanで開催されたこの大会は、3x3x3種目に特化した緊迫感あふれる1ラウンド勝負となった。地元の舞台で躍動する選手たちに大きな注目が集まる中、競技は序盤からハイレベルな展開を見せた。

今大会の主役となったのは地元日本の野上碧（Ao Nogami）だった。野上碧は正確無比なソルブを揃えて7.63秒という圧倒的な優勝平均タイムを樹立した。単発タイムでも6.77秒という驚異的な記録を叩き出し、スピードキュービング界における確かな実力を満天下に示した。

表彰台争いも熾烈を極めた。日本の郡司光貴（Mitsuki Gunji）が8.46秒の平均タイムで見事に2位を獲得し、日本勢の層の厚さを証明した。さらにインドのAmey Gabaが8.56秒の好記録で3位に入り、単発でも7.88秒のタイムを残して国際色豊かなポディウムを形成した。

ルービックキューブの公式戦として行われた今大会では、決勝ラウンドの限られたチャンスの中で多くの選手が自己の限界に挑んだ。わずか1ラウンドのみの真剣勝負という独特のプレッシャーの中、各選手が集中力を研ぎ澄ませてタイマーに向き合った。

公式記録の行間には、確かな進化を遂げた選手たちの記憶が刻まれている。WCA大会への初出場を果たした上野健（Ken Ueno）は3x3x3で11.89秒を記録して21位に入り、同じく初挑戦の行本陸玖（Riku Yukimoto）は12.83秒で17位という素晴らしい順位を獲得した。荒川律輝（Ritsuki Arakawa）も初舞台で14.44秒を出し30位、横田究（Kiwamu Yokota）も初の試技で21.95秒を記録して43位と健闘した。

経験を重ねてきた選手たちも堂々たる足跡を残した。田中康太（Kota Tanaka）はキャリア3度目の挑戦で7位という自己最高順位を掴み取った。原田櫂（Kai Harada）は12.70秒の自己ベストを記録して15位に入り、塚越拓也（Takuya Tsukagoshi）も14.49秒の自己記録を刻んで19位となった。17大会の経験を持つ石倉文（Aya Ishikura）も24位と堅実な滑りを見せた。

このキューブ大会では、他にも注目すべき記録が誕生した。中国の孔祚淳（Zuozhun Kong）が単発10.28秒、平均13.03秒を記録し、川崎悠生（Yusei Kawasaki）が単発13.56秒と平均16.63秒、宮崎隆太郎（Ryutaro Miyazaki）が単発17.31秒と平均22.69秒を残すなど、各選手が充実した成果を収めた。

熱気に包まれたTokyo Challenge Winter B 2023は、野上碧の圧巻の勝利と初出場組の輝かしい一歩とともに幕を閉じた。大田区で刻まれた数々の好記録と鮮烈な記憶は、次のシーズンへと向かう選手たちの大きな原動力となるはずだ。