Wrong Diagonal Bishop

In shogi, the Wrong Diagonal Bishop or Parallel-Diagonal Bishop (筋違い角 sujichigai kaku) is a Bishop Exchange (Double Static Rook) opening characterized by an early bishop exchange followed by dropping the bishop in hand on the 4e square if played by Black or the 6e square if played by White.

Bishop not on usual (gray) squares

△ pieces in hand: 角

9	8	7	6	5	4	3	2	1
	桂		金		金		桂		1
									2
	歩		歩		歩		歩		3
						歩			4
					角				5
		歩							6
	歩		歩		歩		歩		7
									8
	桂		金		金		桂		9

▲ pieces in hand: –

The name comes from the bishop being only able to move to squares that are not available from the bishop's start position.

See also

• Bishop Exchange
• Static Rook

Bibliography

• Fairbairn, John (1980). "The wrong-diagonal bishop". Shogi (23): 18. 
• Hodges, George (ed.). "The wrong diagonal 角 part one". Shogi (57): 6–8. 
• Naito, Kunio (1985). Translated by Fairbairn, John. "The wrong diagonal 角 part two". Shogi (58): 7–9. 
• Naito, Kunio (1986). Translated by Murphy, David. "The wrong diagonal 角 part three". Shogi (59): 15–17. 
• Hodges, George, ed. (1986). Translated by Murphy, David. "The wrong diagonal 角 part four". Shogi (60): 13–15. 
• Hodges, George, ed. (1986). "The wrong diagonal 角 part five". Shogi (61): 16–17, 7. 
• Hodges, George, ed. (1986). Translated by Murphy, David. "The wrong diagonal 角 part six". Shogi (62): 13–14, 16. 
• Kimura, Yoshio (1986). "The wrong diagonal 角 part seven". Shogi (63): 6–7. 
• Kimura, Yoshio (1986). Translated by Murphy, David. "The wrong diagonal 角 part eight". Shogi (64): 13–14. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part nine". Shogi (65): 13–15. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part ten". Shogi (66): 14–16. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part eleven". Shogi (67): 7–9. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part twelve". Shogi (68): 7–9. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part thirteen". Shogi (69): 7–9. 
• Kimura, Yoshio (1987). Translated by Murphy, David. "The wrong diagonal 角 part fourteen". Shogi (70): 7–9. 
• Hosking, Tony (1997). The art of shogi. The Shogi Foundation. ISBN 978-0-95310-890-9. 
• Kitao, Madoka (2011). Joseki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2501-0. 

External links

• Quest of the Lost Systems: Kakugawari 9: Sujichigai Kaku