Pac-Man (shogi)

In shogi, the Pac-Man (パックマン pakkuman or 4四歩パックマン yon-yon-fu pakkuman) is a trap opening.

Pac-Man
☖ pieces in hand: –
987654321 
香桂銀金王金銀桂香1
 飛     角 2
歩歩歩歩歩 歩歩歩3
     歩   4
         5
  歩      6
歩歩 歩歩歩歩歩歩7
 角     飛 8
香桂銀金玉金銀桂香9
☗ pieces in hand: –

It is named after the video game Pac-Man.

The opening was called 4四歩パックリ yon-yon-fu pakkuri on the NHK shogi television show Shogi Focus (将棋フォーカス).

The opening has an early pawn gambit made by White on the fourth file which may be metaphorically eaten by Black's bishop as if by Pac-Man. If Black takes the pawn with their bishop without careful thought, then the trap may succeed.

Six professional shogi players – Yoshiharu Habu, Yasumitsu Satō, Toshiyuki Moriuchi, Kōji Tanigawa, Akira Watanabe, Takeshi Fujii – agreed that the opening puts White at a disadvantage.[1]

Development

Main line
Pac-Man
☖ pieces in hand: –
987654321 
香桂銀金王金銀桂香1
     飛 角 2
歩歩歩歩馬 歩歩3
      歩  4
         5
  歩      6
歩歩 歩歩歩歩歩歩7
       飛 8
香桂銀金玉金銀桂香9
☗ pieces in hand: 歩歩

Double Pac-Man

Rook promotion line
Pac-Man
☖ pieces in hand: –
987654321 
香桂銀金王金銀桂香1
      角 2
歩歩歩歩馬歩歩歩3
        4
        5
  歩     6
歩歩 歩歩龍歩歩歩7
       飛 8
香桂銀金玉金銀桂香9
☗ pieces in hand: 歩歩
gollark: Solar panels are unfortunately not good enough to keep drones airborne.
gollark: Anyway, I think the main issue with droneswarms is that they would run out of battery quite fast.
gollark: Can dogs climb walls? No. Therefore, geckos superior.
gollark: Well, they wouldn't be a good replacement for drones if they just sat around doing cat things.
gollark: I don't think military cats is a very good idea. They would be too rebellious.

References
  1. 将棋世界, 2007 June, pp. 84–85.

Bibliography
  • 湯川 [Yukawa], 博士 [Hiroshi] (1989). 奇襲大全. 毎日コミュニケーションズ. ISBN 978-4-8399-0177-6.CS1 maint: ref=harv (link)
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