This game has hidden developer credits.
Meijinsen is a Shogi game.
...that's all I got.
Stored at 0x0040 in the sound CPU is some basic information about the chip:
ALPHA DENSHI CO.,LTD. JUNE / 24 / 1986 FOR * SHOUGI * GAME USED SOUND BOARD CONTROL SOFT PSG & VOICE BY M.C & S.H
M.C is Makio Chiba, S.H is presumed to be Satoshi Hagitani, who worked at Alpha Denshi Co., Ltd. in 1986 on sound and music programming.