Josh Krekeler, secretary of the U.S. Shogi Federation, wrote this primer for those of us who are Shogi novices.
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Shogi is the Japanese version of chess. While they share some common elements and strategic principles, they are really two different games. Shogi is much more popular in Japan than Chess is in America. Professional players compete for seven major titles throughout the year, and games are regularly broadcast on television. Some stations even sponsor their own Shogi competitions for the pros.
Shogi owes its popularity largely to the excitement of "drops" -- instead of moving a piece on the board, you can add a captured piece to your army by dropping it on an empty square. Because of this rule, which distinguishes Shogi from all other established Chess-type games, most of the pieces remain in play for the entire game.
Many games end in furious counterattacks where one tempo is the winning advantage. (A friend commented that it's a good idea to calculate the defense first in a Chess game, but the offense has a distinct advantage in Shogi. It's possible to disregard your opponent's attack if you can execute your own mating attack first).
The object of Shogi is the same as Chess -- checkmate the king. The shogi board is 9x9 squares. Each player starts with a king, 9 pawns, 2 Gold Generals, 2 Silver Generals, 2 knights, 2 lances, a bishop and a rook. The pieces are all the same color, because some of your opponent's pieces will soon be fighting on your side (and vice versa). The last three ranks on either side comprise the promotion zone, so promotion is common.
Here's a look at each Shogi piece and its characteristics.
King (Osho)
Moves one square in any direction (identical to a Chess king). Protect your own, and hunt your opponent's without mercy. Castling is not accomplished in one move; it consists of moving the king into a position where it's shielded from the attack by a coordinated group of defensive pieces (when building a castle, it's a good idea to leave a "back door" escape route open).
Gold General (Kinsho)
Moves one square in any direction except diagonally backwards. Golds are very strong and good for defense, but have limited mobility in the early stages of a game.
Silver General (Ginsho)
Moves one square diagonally or straight forward, sort of like a "mini-bishop." Silvers are very flexible in general and move easily among pawn formations. When Silvers promote, they become Golds and lose their resemblance to bishops.
Knight (Keima)
Jumps two squares forward and one square to either side (think of a "T"). Shogi knights jump like Chess knights, but they only have two possible squares to move to, so they're not as valuable at the beginning of the game and must be developed with care. A knight that advances too early is easy prey for a pawn.
A knight in hand, however, can be quite useful. Knights promote to Golds and must promote when they reach either of the last two ranks.
Lance (Kyosha)
Lances are like vestigial rooks. They start the game in the corners of the board and can move forward as many squares as they are able. They're restricted to their file, though, and can't move backwards. Lances play an important role in edge attacks, but often they don't do anything else until they're captured and dropped. Lances promote to Golds and must promote when they reach the last rank.
Pawn (Fu)
Pawns move and capture one square straight forward. They don't protect each other diagonally, so you can't build pawn chains, but a row of pawns supported by a Silver or Gold behind them can make an effective "wall." Pawns promote to Golds, and promoted pawns ("tokins") are especially useful because they're as powerful as Golds on the board. However, once they're captured they revert to simple pawns.
Bishop
Moves an unlimited number of squares diagonally, like a Chess bishop. There are only two bishops in Shogi, and they start the game pointing at each other, so each game begins with the possibility of a bishop exchange. A promoted bishop is a horse or "king-bishop," which combines the moves of king and bishop.
Rook
Moves an unlimited number of squares orthogonally, like a Chess rook. The rook is the root of most opening attacks, and Shogi openings are generally classified according to where the rook is positioned in the first few moves of the game.
Promoting the rook is an important achievement because a promoted rook, or dragon, is very powerful and can do a lot of damage to the opposing camp with the right support. A dragon is a "king-rook," meaning it can move as a rook or one square diagonally.
