Community variant

Vibrant Chess

Chess with weaker pieces on smaller board. Queen, rook and bishop move only two squares based on their original direction. And there is silver general from shogi.

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.

Uploaded by: Hailstorm
Visibility: public
Status: active

Generated rule overview

This variant inherits its base rules from `chess` and overrides the settings shown below.

Board and setup

Default starting position

Pieces and movement

The piece set used on the board is: king (k), custom piece 3 (q), custom piece 1 (r), custom piece 2 (b), knight (n), pawn (p) and silver (s).
custom piece 1 (r) is a custom piece with Betza movement `R2`.
custom piece 2 (b) is a custom piece with Betza movement `B2`.
custom piece 3 (q) is a custom piece with Betza movement `Q2`.

Move rules

Castling is not allowed.
Pawn double-step moves are disabled.

Promotion

Promotions are available in the configured promotion zones. The the promotion region for White is all squares on rank 8 and the promotion region for Black is all squares on rank 1.
The pieces that can promote are: pawn (p).
Promotion choices are both sides: custom piece 3 (q), custom piece 1 (r), custom piece 2 (b), knight (n) and silver (s).

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.

Custom piece 1 (R) movement

R2

Custom piece 2 (B) movement

B2

Custom piece 3 (Q) movement

Q2

move capture move or capture initial only hopper target

Fairy-Stockfish rules

[vibrantchess3:chess]

maxRank = 8
maxFile = 6

pawn = p
knight = n
king = k
silver = s

customPiece1 = r:R2
customPiece2 = b:B2
customPiece3 = q:Q2

pieceToCharTable = PNBRQKS...........pnbrqks

startFen = rbqkns/pppppp/6/6/6/6/PPPPPP/RBQKNS w - - 0 1

castling = false
doubleStep = false

promotionRegionWhite = *8
promotionRegionBlack = *1
promotionPieceTypes = qrbns