Community variant
Hopefully Tractable Penultima 1
The Piece images are from https://www.chessvariants.com/graphics.dir/alfaerieSVG/index.html. If you're playing this as a Penultima, you must turn off Show piece destinations and Show material difference in Board Settings and turn on Zen mode. You also cannot read any Rules of the variant past this point!
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: wazir (k), rook (q), bishop (b), custom piece 1 (n) and custom piece 3 (p).
- custom piece 1 (n) is a custom piece with Betza movement `WsHvN`.
- custom piece 2 (r) is a custom piece with Betza movement `WsH`.
- custom piece 3 (p) is a custom piece with Betza movement `fFibmB`.
- Special diagonal palace lines are enabled on selected squares.
Promotion
- Promotions are available in the configured promotion zones. The the promotion region for White is all the ranks from 1 to 9 and the promotion region for Black is all the ranks from 1 to 9.
- The pieces that can promote are: custom piece 1 (n).
- Fixed promotion mappings: n promotes to r.
- Piece promotion is mandatory where promotion is legal.
- Promoted pieces can demote according to the configured promotion mapping.
Winning and losing
- An extinction rule is active: reaching 0 remaining piece(s) k causes a loss for the side to move.
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.
WsHvN
WsH
fFibmB
move
capture
move or capture
initial only
hopper target
Fairy-Stockfish rules
[penultima1version12]
# This configuration code contains spoilers for the Penultima! Do not read it if you watch SametTheTurk and want to play against him!
#
#
#
#
bishop = b
rook = q
wazir = k
extinctionValue = loss
extinctionPieceTypes = k
extinctionPseudoRoyal = true
customPiece1 = n:WsHvN
customPiece2 = r:WsH
promotionRegionWhite = *1 *2 *3 *4 *5 *6 *7 *8 *9
promotionRegionBlack = *1 *2 *3 *4 *5 *6 *7 *8 *9
pieceDemotion = true
mandatoryPiecePromotion = true
promotedPieceType = n:r
customPiece3 = p:fFibmB
promotionPawnTypes = -
doubleStepRegionWhite = *9
doubleStepRegionBlack = *1
maxRank = 9
maxFile = 9
diagonalLines = a1 a3 a5 a7 a9 b2 b4 b6 b8 c1 c3 c5 c7 c9 d2 d4 d6 d8 e1 e3 e5 e7 e9 f2 f4 f6 f8 g1 g3 g5 g7 g9 h2 h4 h6 h8 i1 i3 i5 i7 i9
startFen = n+nbqkqb+nn/1p1p1p1p1/p1p1p1p1p/9/9/9/P1P1P1P1P/1P1P1P1P1/N+NBQKQB+NN w - - 0 1