| Shogi variants |
|---|
| Standard shogi (9×9, drops) |
| Small variants |
| Nana shogi (3×3) |
| Dōbutsu shōgi (3×4, for children) |
| Micro shogi (4×5) |
| Minishogi (5×5) |
| Kyoto shogi (5×5) |
| Judkins shogi (6×6) |
| Whale shogi (6×6) |
| Tori shogi (7×7) |
| Yari shogi (7×9) |
| Heian shogi (8×8 or 9×8, 12th c.) |
| Standard-size variants |
| Sho shogi (9×9, 16th c.) |
| Cannon shogi (9×9) |
| Hasami shogi (9×9, 9 or 18 pc.) |
| Hand shogi (9×9, 19 pc., 10 in hand) |
| Annan shogi (9×9, neighbors influence movement) |
| Unashogi (9×9, all drops) |
| Large variants |
| Okisaki shogi (10×10) |
| Wa shogi (11×11) |
| Chu shogi (12×12) |
| Heian dai shogi (13×13) |
| Dai shogi (15×15) |
| Tenjiku shogi (16×16) |
| Dai-dai shōgi (17×17) |
| Maka dai-dai shōgi (19×19) |
| Kō shōgi (19×19) |
| Tai shogi (25×25) |
| Taikyoku shogi (36×36) |
| Three- and four-player variants |
| Sannin shogi (hexagonal board, 7 cells on a side, three-person) |
| Yonin shogi (9×9, four-person) |
Okisaki shogi (御妃将棋 okisaki shōgi "Queen shogi") is a modern variant of shogi (Japanese chess). It was developed by Masayuki Nakayachi c. 1996 from suggestions by German chess player Ralph Blockhaus.
Okisaki shogi is similar to standard shogi, but is played on a 10×10 board. There are ten pawns and a queen, which moves like a queen in Western chess. The knights also move as in Western chess. Pieces alternately promote and demote with each move, and the promotion values are differ from those of standard shogi.
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The objective of the game is to capture your opponent's king and crown prince (if present), or all other pieces.
Each player has a set of 22 wedge-shaped pieces: those of standard shogi plus a queen and an extra pawn. The queen is placed to the immediate left of the king.
Piece moves are as in standard shogi, apart from the queen (妃将 or 妃 hishō or okisaki "princess") and the knights (跳馬 or 跳 chōma), which move as in Western chess, and the lance, which can move directly forward or backwards (standard shogi knights and lances can only move forward.)
Because they can back out, the standard requirements for promoting knights and lances in the final ranks, and restrictions on dropping them there, do not apply to okisaki shogi. Limits on pawn drops are as in standard shogi.
Pieces other than the king, queen, and gold promote as in standard shogi.