Tokyo Challenge Winter C 2023

Forty-seven competitors gathered on February 12, 2023, turning a single-day schedule into a concentrated test of speed and focus. While large-puzzle endurance events like the five-by-five, six-by-six, and seven-by-seven cubes demand sustained mental stamina through hundreds of turns, this meet stripped everything down to pure, unadulterated efficiency. A streamlined program gave every entrant just five attempts to make their mark on the standard puzzle, leaving no room for warm-up rounds or second chances.

The setting for this focused gathering was the city facility in Ota, Tokyo, Japan, where participants assembled for an action-packed day of tournament play. Organised under standard regulations, the Tokyo Challenge Winter C 2023 tested nerve and precision across a single round of classic speedcubing. Without the multi-stage format of larger championships, solvers had to execute instantly, making every solitary turn count toward the final standings in the official regional database.

In the headline event, the classic Rubik's Cube, Yuji Ishii delivered a commanding display to capture the top step of the podium. Ishii put together a winning average of 8.27 seconds, highlighted by the day's best single solve of 7.44 seconds. That blend of pace and stability kept him clear of the chasing pack, earning him the gold medal in a competitive field representing three different countries on the scoresheet.

The battle for the remaining podium places proved equally sharp among the leading contingent. Yoji Ogura secured second place with a reliable 9.05-second average, demonstrating remarkable consistency across his attempts. Hirotaka Ito rounded out an all-Japan podium sweep in third position, posting an average of 10.42 seconds and registering an individual single of 9.37 seconds to finish just behind the top two.

Beyond the medal positions, the 3x3 results revealed substantial progress across the wider roster of competitors. Noritaka Hamamichi highlighted the day by slashing his personal benchmark to 37.80 seconds, an improvement of 35.3 percent compared to his prior mark of 58.38 seconds, on his way to 45th place. Kayo Osawa also delivered a standout single of 43.79 seconds to finish 46th, taking 27 percent off a previous best of 59.97 seconds.

Other solvers produced significant personal milestones throughout the single round of speed cubing. Nguyễn Đức Trí secured sixth place with a strong personal best of 10.29 seconds, dropping his record by 20.8 percent from 13.00 seconds. Ryoichi Matsumoto lowered his previous mark of 23.85 seconds down to 19.08 seconds to gain a 20 percent drop and take 27th place, while Akihiro Yoshizawa set a personal best of 24.39 seconds, a 16.8 percent improvement, finishing 36th.

The depth of experience across the field was further illustrated by several dedicated veterans and established entrants. Yusuke Kosaka recorded a personal best single of 12.30 seconds on his way to a 12th-place finish in his 47th career tournament appearance. Reon Matsui navigated the tight competition to secure a 10th-place ranking in his 23rd tournament, while Yuichi Hamada added a 30th-place result in his 65th lifetime appearance.

As the single-round WCA competition came to a close, the final rankings reflected a day of sharp execution and widespread personal progress. The event showed how a compact, single-event program can deliver intense focus and rewarding achievements for participants at every stage of their solving journey. With official marks logged and rankings updated for 2023, the community turns its attention forward to the next cycle of meets on the calendar.

2023年2月12日、東京都大田区の大田区入新井集会室にてスピードキュービングの公式大会が開催され、会場内は静寂とタイマーのストップ音が交錯する独特の緊張感に包まれた。キューバーたちが指先を研ぎ澄まし、一つのパズルに向き合う光景が広がる中、熱い戦いが幕を開けた。

今回のTokyo Challenge Winter C 2023は、種目を絞り込んで行われた特別なWCA competitionであり、合計47名の競技者が集結した。単一ラウンドの短期決戦という形式のもと、参加者たちは一発勝負の舞台で日頃の鍛錬の成果を披露した。

競技の中心となった3x3x3 Cubeでは、正確なソルブと卓越したスピードが求められた。限られた試技の中でいかにミスを減らし、安定したタイムを刻むかが上位進出への鍵を握る展開となった。

その中で圧倒的な実力を発揮したのがYuji Ishii (石井佑嗣)である。8.27のウイニングアベレージを記録し、単発ベストでも7.44を叩き出して見事に優勝の座を射止めた。正確無比な指運びが際立つ見事なパフォーマンスであった。

続いて2位には平均9.05を記録したYoji Ogura (小倉洋二)が入り、3位には平均10.42をマークしたHirotaka Ito (伊藤大平)が食い込んだ。Hirotaka Ito (伊藤大平)は単発でも9.37を記録するなど、上位陣がハイレベルな争いを演じた。

大会の記録表の奥には、個々の挑戦の物語が刻まれている。Kai Yamamoto (山本快)は3x3x3 Cubeで10.43の自己ベストを記録して4位フィニッシュを果たし、Ryota Futagami (二神亮太)は5位という上位入賞を収めた。さらにYoshikazu Koike (小池慶和)は9位、Mathew Huiは15位とそれぞれ健闘を見せた。

公式戦初出場組の挑戦も光った。Keisuke Yaosaka (八百坂圭祐)は3x3x3 Cubeで初試技18.56を記録し28位、Ryoichiro Sakurai (櫻井涼一郎)は初試技18.93で37位となった。Franklin Benno Jonathan Samuelは初試技19.26で35位、Mizuki Shibo (芝生瑞樹)は初試技20.86で33位と堂々のデビューを果たした。

大田区入新井集会室で行われたTokyo Challenge Winter C 2023は、ルービックキューブ愛好者たちが互いに腕を競い合う充実した一日となった。Ota, Tokyo, Japanで開催されたこの競技会は、参加者それぞれに確かな記録と新たな経験を残して幕を閉じた。