Janus Chess
Invented by: Werner Schöndorf, 1978
Game hierarchy
• Game
• Generic Chess
• Generic x8
• Generic 10x8
• Capablanca Chess
• Janus Chess
Board
FEN: rjnbkqbnjr/pppppppppp/10/10/10/10/PPPPPPPPPP/RJNBKQBNJR w AJaj - 0 1
Piece Types
| Internal Name | Name | Notation | Added By | Notes |
| King | King | K | Generic Chess | royal; can castle |
| Pawn | Pawn | P | Generic Chess | can promote; en passant; pawn structure evaluation |
| Queen | Queen | Q | Capablanca Chess | trap king on back rank bonus |
| Rook | Rook | R | Capablanca Chess | castling partner; open file bonus; trap king on back rank bonus |
| Bishop | Bishop | B | Capablanca Chess | colorbinding evaluation; outpost bonus |
| Knight | Knight | N | Capablanca Chess | outpost bonus |
| Archbishop | Janus | J | Capablanca Chess | |
Game Variables
Name = "Janus Chess"
Invented = "1978"
InventedBy = "Werner Schöndorf"
NumberOfSquareColors = 2
FENFormat = "{array} {current player} {castling} {en-passant} {half-move clock} {turn number}"
FENStart = "#{Array} w #default #default 0 1"
Array = "rjnbkqbnjr/pppppppppp/10/10/10/10/PPPPPPPPPP/RJNBKQBNJR"
DeduplicateMoves = false
StaticExchangeEvaluation = true
Declared in Generic Chess:
StalemateResult = Draw
PromotionRule = Standard
PromotionTypes = "QJRBN"
BareKing = false
EnPassant = true
PromotingType = Pawn
CastlingType = King
Declared in Generic x8:
PawnDoubleMove = true
Declared in Generic 10x8:
Castling = Long
Rules
MoveCompletionDefaultRule
BasicPromotionRule
EnPassantRule
CheckmateRule
Move50Rule
CastlingRule
RepetitionDrawRule
Evaluations
PawnStructureEvaluation
DevelopmentEvaluation
LowMaterialEvaluation
ColorbindingEvaluation
RookTypeEvaluation
OutpostEvaluation
KingSafetyEvaluation
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