Community variant
Shinshogi (新将棋)
New Shogi.
The 'Keima (桂馬)' has been removed, and the 'Copper General (銅将)', 'Drunken Elephant (酔象)', and 'Knight (騎士)' have been added. With the exception of the King, all pieces can move like the King upon promotion, in addition to their existing movement. Pawn drop checkmates are also possible, and there are no draws.
This is a user-catalogued casual variant. Technical details such as board size, FEN, pieces, and hand rules are defined in the Fairy-Stockfish variants.ini block below.
Generated rule overview
This variant is defined directly from a Fairy-Stockfish rule block. The text below is generated from the available configuration and may omit details that are only implicit in piece movement notation.
Board and setup
Pieces and movement
- The piece set used on the board is: King (k), Rook (r), Bishop (b), Knight (n), Pawn (p), Copper (c), Elephant (e), Silver (s) and Gold (g).
- Copper (c) is a custom piece with Betza movement `fFvW`.
- Elephant (e) is a custom piece with Betza movement `FfsW`.
Move rules
- Castling is not allowed.
- Pawn double-step moves are disabled.
- A piece may not move to a square where it would have no legal future movement.
Drops and hands
- Pieces in hand can be dropped back onto the board. Droppable pieces are: Rook (r), Bishop (b), Knight (n), Pawn (p), Copper (c), Elephant (e), Silver (s) and Gold (g).
- Captured pieces go to the capturer's hand.
- Drops of Pawn (p) are restricted on files that already contain 1 such piece(s).
Promotion
- Promotions are available in the configured promotion zones. The the promotion region for White is all the ranks from 7 to 9 and the promotion region for Black is all the ranks from 3 to 1.
- The pieces that can promote are: Pawn (p), Copper (c), Silver (s), Gold (g), Elephant (e), Bishop (b), Rook (r) and Knight (n).
- Fixed promotion mappings: p promotes to o, c promotes to o, s promotes to o, g promotes to o, e promotes to o, b promotes to h, r promotes to d and n promotes to t.
- Piece promotion is mandatory where promotion is legal.
Winning and losing
- A flag/goal-zone win is active for piece(s) k.
- Stalemate is scored as a loss for the side to move.
Draws and adjudication
- There is no automatic n-move/50-move draw rule.
- Position repetition is adjudicated after 3-fold repetition as a loss for the side to move.
- Perpetual check is illegal.
Piece movement
These diagrams show custom pieces and known Fairy-Stockfish built-in fairy pieces from White's perspective on a compact preview board. Some special moves, especially hoppers and game-state-dependent moves, can still depend on blockers or game state.
fFvW
FfsW
move
capture
move or capture
initial only
hopper target
Fairy-Stockfish rules
[shinshogi]
variantTemplate = shogi
maxFile = 9
maxRank = 9
pocketSize = 9
startFen = csgekegsc/1r2n2b1/ppppppppp/9/9/9/PPPPPPPPP/1B2N2R1/CSGEKEGSC[] w - - 0 1
shogiPawn = p
customPiece2 = c:fFvW
silver = s
gold = g
customPiece3 = e:FfsW
bishop = b
rook = r
knight = n
king = k
commoner = o
dragonHorse = h
bers = d
centaur = t
pieceDrops = true
capturesToHand = true
promotionRegionWhite = *7 *8 *9
promotionRegionBlack = *3 *2 *1
promotedPieceType = p:o c:o s:o g:o e:o b:h r:d n:t
dropNoDoubled = p
mandatoryPiecePromotion = true
stalemateValue = loss
nMoveRule = 0
nFoldRule = 3
nFoldValue = loss
perpetualCheckIllegal = true
castling = false
doubleStep = false
flagPiece = k
flagRegionWhite = *9
flagRegionBlack = *1
immobilityIllegal = true