Sente Naka-bisha
(Black's Central Rook )

main line
1. P-7f
P-8d
2. S-6h
P-3d
3. P-6f
S-6b
4. R-5h P-5f S-6g
diagram0-7-8 P-5d (iv)
5. S-4h S-5g R-5h
(i) (ii) (iii)
(i) Transposition to Yagura .
(ii) Transposition to Rikisen Furibisha .
(iii)Same formation after diagram0-7-8 , 4. . .P-5d 5. P-5f
(iv) Oyama's opening style . (Range Rook , after Silver developed )
(it can transposition to Gangi or Kazaguruma . )

Naka-bisha ( Central Rook )










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