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1... R-32 opening

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In shogi, 1... R-32 (2手目☖3二飛 Template:Transl) is a Third File Rook opening in which White's rook is positioned on the 32 square on White's first move.

When played by Black, the opening is known as 1. R-78 (初手７八飛 Template:Transl).

Characteristics of this strategy

After Black's first move ▲7-six Pawn, if White aims for the Ishida Style, traditionally White would play 2nd move △3-four Pawn, followed by ▲2-six Pawn, △3-five Pawn, and so on.[1] However, research showed that White often ended up with a disadvantageous position. Therefore, a new approach was devised where White deploys the Rook to the 3rd file on the 2nd move, aiming for the Ishida Style (see diagram 1). Subsequently, the game progresses with ▲2-six Pawn, △6-two King, ▲2-five Pawn, △3-four Pawn, and so forth. In this position, Black has the option of exchanging the Bishop with ▲2-two Bishop Takes, △Same Silver, and then playing ▲6-five Bishop (see diagram 2), allowing the creation of a Horse. Initially, this was considered disadvantageous for Black,[2] but further research showed that Black also had promising moves, leading to the attention of professionals on the 2nd move 3-2 Flying Rook as a new strategy.

As a countermeasure from the Black side, there's a tactic of advancing the pawn to 9-six on the 3rd move.[3] The exchange with △9-four Pawn is commonly believed to put Black in a slightly difficult position.[4] From Black's perspective, allowing White to occupy the 9-fifth square is one possible development. Additionally, there's a strategy of playing ▲7-seven Bishop on the 3rd move, aiming for a Double Wing Rook formation. According to Kubo Toshiaki, as of 2011, there isn't a straightforward sequence that makes White's position significantly better.[5]

History

  • The originator of this strategy is Kenji Imaizumi, who was an amateur player before being admitted through the third dan league entrance exam into the Kansai Shogi Association.[6] It was then transmitted to the Kanto region through Kubo Toshiaki. Hiroshi Tanigawa became acquainted with this playing style through Kubo's guidance during study sessions.[7]
  • In actual games, Yuya Nagaoka first used this strategy in an official match against Amahiko Sato during the Ryuo Tournament 6th Group on December 11, 2007 (resulting in Amahiko Satoh's victory).[8] Subsequently, Kubo attracted attention by using it in the A-Class Ranking Tournament, while Yoshiharu Habu employed it in the semifinals of the Asahi Cup.[9] Due to this strategy, Imaizumi became the first recipient of the 35th Masuda Kozo Award as a recommendation member. In the final tournament of the Ryuo Tournament in 2010, Kubo attempted it again against Tadahisa Maruyama, resulting in a repetition of moves. Since Kubo introduced "Kubo's Ishida Style" in 2011, research and examples of practical application have continued, with new variations also emerging.
  • In the 2011 Ryuo Tournament 1st Group, Yasumitsu Satoh displayed a new move with the 2nd move △3-two Flying Rook, followed by the 4th move △4-two Silver, securing a victory against Kazuki Kimura. In the 2018 Ryuo Tournament 1st Group, 5th place playoff, Satoh Yasu also defeated Tetsuro Itodani using this same strategy.[10] In the 2011 A-Class Ranking Tournament, Koji Tanigawa defeated Akira Watanabe. In the 4th game of the 2012 Oza Tournament, Yoshiharu Habu adopted this strategy against Akira Watanabe, resulting in a repetition of moves.
  • In 2015, Koji Tosa employed this strategy against Kazuki Kimura and emerged victorious.[11] In 2017, Bungo Fukusaki[12] and Tatsuya Sugai[13] also adopted it but were defeated. Hiroshi Miyamoto also used it against Ryo Shimamoto; however, he found himself in a disadvantageous position with his Rook being confined to his own camp, leading to a strategic disadvantage.[14] Nonetheless, he managed to stage a comeback victory due to a oversight by his opponent in the endgame.
  • In 2018, Takanori Anyouji[15] utilized this strategy against Yoshikazu Minami but suffered a defeat. In 2019, Daisuke Suzuki[16] employed it against Keita Inoue.

See also

Bibliography

  • 長岡, 裕也. 2008. 2手目の革新: 3二飛車戦法. 毎日コミュニケーションズ.
  • 佐藤, 康光. 2010. 佐藤康光の石田流破り. 日本将棋連盟.
  • 久保, 利明. 2011. 久保の石田流. 日本将棋連盟.

References

  1. ^ “Yasumitsu Sato's Ishida Style Breaking” pages 12-24
  2. ^ “Kubo's Ishida Style” Page 164
  3. ^ “Second Move Innovation 3 Two Rook Tactics” page 62
  4. ^ “Kubo's Ishida Style” page 174
  5. ^ “Kubo's Ishida Style” page 184
  6. ^ “Easy to understand modern shogi by Manabu Senzaki” page 128
  7. ^ “Image and Reading of Shogi” page 24
  8. ^ “Second Move Innovation 3 Two Rook Tactics” page 94
  9. ^ Shogi World April 2008 issue
  10. ^ 2018.5.29・31st Ryuo Match Group 1 5th place deciding match・vs. Tetsuro Itoya
  11. ^ 2015.4.7・28th Ryuo Match Group 6 promotion deciding match・Kazuharu Tsukasa vs.
  12. ^ 2017.3.14・75th standings match C class 1 group final match・vs. Takuya Nagase
  13. ^ 2017.9.1・67th Osho Tournament Second Preliminary Round 1・vs. Shintaro Saito
  14. ^ 2017.10.2・59th Championship Tournament Preliminary Tournament “Mobile Broadcast” Comments
  15. ^ 2018.1.25・31st Ryuo Match 5 Group Ranking Match
  16. ^ 2019.1.18・77th standings B class 2nd round 8th round



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