3三将棋についてAbout San-San Shogi
1980年、南雲夏彦考案。3×3盤で、開始時に盤上にあるのは両陣営の玉のみ(対角の隅に配置)。それ以外の駒はすべて持ち駒として、初手から自由に打てます。
Devised in 1980 by Natsuhiko Nagumo. Played on a 3×3 board. At the start, only the two kings sit on the board (at diagonally opposite corners) — every other piece begins in hand, ready to drop from move one.
成りは最も奥の1列のみ。それ以外(二歩・打ち歩詰め・行き所のない駒)は本将棋と同じです。
Promotion is available only in the single farthest rank. Everything else — double pawns, pawn-drop checkmate, drops with no legal future move — follows standard shogi rules.