Tokyo Challenge BLD I 2023

Thirty competitors gathered in Ota, Tokyo, Japan on April 9, 2023, each stepping forward to face the exacting demands of memory and spatial recall on a single, focused day of action. Held at the Iriarai assembly facilities, Tokyo Challenge BLD I 2023 brought together an enthusiastic lineup dedicated entirely to sightless solving. The single round format placed immense pressure on every attempt, where success relied on turning the classic Rubik's Cube into a purely mental map before executing the solution under a blindfold.

While modern speedcubing programs regularly feature an extensive variety of twisty challenges ranging from miniscule layers to massive multi-layered geometric shapes, this specialized speed cubing gathering concentrated all its energy into a singular, iconic discipline. Memorising piece positions and executing algorithms without visual feedback represents one of the most distinctive tests in the cubing world. With 30 entrants taking their marks, the single round provided a rigorous benchmark for every solver looking to post official marks on the circuit.

At the top of the standings, Keita Hayakawa put on an impressive display of precision and speed, claiming first place with a blistering best single solve of 15.25 seconds. Although an official average remained elusive with a DNF in the books, that standout attempt set a high standard that proved unreachable for the rest of the field. Hayakawa anchored the podium with authority, demonstrating the rapid memorisation cadence and fluid finger execution required to prevail at an elite level.

The remaining podium spots showcased intense competition among top Japanese contenders. Akito Takei secured the second position by locking in a time of 27.63 seconds, remaining the only other competitor to dip below the 30-second mark on the day. Shuto Ueno rounded out the medal positions in third place, recording a time of 42.83 seconds. Together, the trio completed a sweep of all three podium places for Japan in a tournament defined by sharp technical execution.

Beyond the top steps of the podium, several competitors notched significant milestones that the final 3x3 results table might otherwise obscure. Shogo Yamamoto delivered one of the weekend highlights by securing 12th place with a personal best single of 2:04.48, an improvement of 38.1 percent over his previous mark of 3:21.05. Tsuyoshi Fujioka also made great strides, finishing 8th overall with a personal best of 1:06.75, which cut 13.6 percent off his earlier 1:17.24 mark. Tomoaki Sakuma took 4th place thanks to a personal best solve of 43.06 seconds, improving 4 percent on his past standard of 44.85, while Yusuke Kosaka reached 10th place with a personal best solve of 1:45.74.

First-time event performances brought further excitement to the floor as solvers ventured into unfamiliar territory during this WCA competition. Kousei Noguchi tackled his first ever attempt at 3x3x3 Blindfolded, landing 9th place with an initial mark of 1:10.08. Kohei Tsuji also completed his first ever attempt in the event, logging a time of 3:30.23 to claim 19th place. Masashi Kurasawa recorded his first ever attempt as well, placing 20th with a time of 5:40.77, while Taiga Kishiwada took on the challenge to earn a 21st-place finish on the day.

The overall field saw a wide spread of outcomes across the single round, illustrating how unforgiving blindfolded solving can be. Vietnam's Nguyen Dao Quoc Anh logged a successful single of 1:05.54, while Takuma Shirahase registered a time of 52.28 seconds. Yuichi Hamada posted a 1:48.07, and Yasuhira Yamaguchi recorded a 2:51.09 solve. With several other participants recording DNFs across their attempts, every successful time served as a testament to deep concentration under competitive conditions.

As the final timers stopped, Tokyo Challenge BLD I 2023 concluded as a showcase of individual focus and procedural skill. Across 30 competitors and a single high-stakes round, the event delivered memorable personal benchmarks, breakthrough debut attempts, and a commanding winning performance by Keita Hayakawa. The gathering closed another productive chapter on the 2023 calendar as participants look ahead to their next opportunities in the broader arena of cubing competition.

2023年4月9日にOta, Tokyo, Japanの大田区入新井集会室で開催されたTokyo Challenge BLD I 2023において、早川慶太（Keita Hayakawa）が3x3x3目隠し部門で15.25という傑出した単発記録を叩き出し、頂点に立ちました。スピードキュービングにおける目隠し競技は記憶力と正確な指の動きが極限まで問われる種目であり、今大会でも1手1秒を争うハイレベルな戦いが繰り広げられました。

この日の大会には総勢30名の選手が集い、1ラウンド勝負という過酷な条件下でしのぎを削りました。競技種目が3x3x3目隠し単一であったこともあり、専門性の高い実力者たちが一堂に会する形となり、上位進出のハードルは極めて高いものとなりました。ルービックキューブを目隠しで解く緊迫感の中、各選手が冷静にキューブと向き合いました。

優勝を果たした早川慶太に続き、2位には武井章人（Akito Takei）が27.63の好タイムを記録して表彰台に登壇しました。3位には上野柊斗（Shuto Ueno）が42.83で入り、日本のトップクラスの選手たちが上位を占める結果となりました。ミスが許されない一発勝負の舞台において、3名がそれぞれの持ち味を発揮してポディウムを勝ち取りました。

大会全体を見渡すと、佐久間智章（Tomoaki Sakuma）が43.06、白波瀬拓磨（Takuma Shirahase）が52.28、Nguyen Dao Quoc Anhが1:05.54、野口航聖（Kousei Noguchi）が1:10.08を記録するなど、各選手がそれぞれの試技で確かな足跡を残しました。制限時間内に揃えきるプレッシャーの中、確かな成功を収めた選手たちの技術が光りました。

Tokyo Challenge BLD I 2023の舞台では、順位表の数字だけでは測れない個々の挑戦が数多く見られました。山口晏平（Yasuhira Yamaguchi）はこの大会が初めてのWCA公式大会となり、3x3x3目隠しでの記念すべき初試技で2:51.09を記録して16位に入りました。同じく初のWCA大会となった恒吉優紀（Yuki Tsuneyoshi）も目隠し初挑戦で2:40.15を叩き出し15位となりました。さらに初の公式戦に挑んだ小野隼人（Hayato Ono）は21位、片山悠介（Yusuke Katayama）も同じく21位で大会を終えました。

また、これまで数々の公式大会を経験してきたベテランたちも果敢に挑戦を続けました。キャリア通算65回目の大会となった濵田祐一（Yuichi Hamada）は1:48.07をマークして11位という最高順位を収め、通算54大会目の松本嘉夫（Yoshio Matsumoto）は13位、通算85大会目の北村曉（Akatsuki Kitamura）は14位でフィニッシュしました。17大会目の参加となった石倉文（Aya Ishikura）も17位と健闘し、経験豊かな選手たちが大会の層の厚さを支えました。

参加者全員が同一種目で競い合う形式だったTokyo Challenge BLD I 2023は、目隠し競技ならではの静寂と緊張感に満ちた1日となりました。1ラウンドのみの開催だからこそ、一瞬の判断ミスが結果を左右するシビアな戦いが展開され、30名の選手全員が己の限界に挑みました。

2023年の春を彩ったTokyo Challenge BLD I 2023は、早川慶太の圧倒的なパフォーマンスとともに幕を閉じました。成功を収めた者も悔しさを味わった者も、この日の経験を糧に次なるスピードキュービング大会へと視線を向けています。