Archchess
Invented by: Francesco Piacenza, 1683
A large historic variant dating from 17th century Italy
Created by Francesco Piacenza in 1683
Game hierarchy
• Game
• Generic Chess
• Generic x10
• Generic 10x10
• Archchess
Board
FEN: rnbckqdbnr/pppppppppp/10/10/10/10/10/10/PPPPPPPPPP/RNBCKQDBNR w AJaj Kk - 0 1
Piece Types
| Internal Name | Name | Notation | Added By | Notes |
| King | King | K | Generic Chess | royal; can castle; king's leap |
| Pawn | Pawn | P | Generic Chess | can promote; en passant; pawn structure evaluation |
| Queen | Queen | Q | Archchess | trap king on back rank bonus |
| Rook | Rook | R | Archchess | castling partner; open file bonus; trap king on back rank bonus |
| Bishop | Bishop | B | Archchess | colorbinding evaluation; outpost bonus |
| Knight | Knight | N | Archchess | outpost bonus |
| Ferz | Decurion | D | Archchess | colorbinding evaluation |
| Squirrel | Centurion | C | Archchess | |
Game Variables
Name = "Archchess"
Invented = "1683"
InventedBy = "Francesco Piacenza"
NumberOfSquareColors = 2
FENFormat = "{array} {current player} {castling} {kings-leap} {en-passant} {half-move clock} {turn number}"
FENStart = "#{Array} w #default #default - 0 1"
Array = "rnbckqdbnr/pppppppppp/10/10/10/10/10/10/PPPPPPPPPP/RNBCKQDBNR"
DeduplicateMoves = false
StaticExchangeEvaluation = true
Declared in Generic Chess:
StalemateResult = Draw
PromotionRule = Standard
PromotionTypes = "Q"
BareKing = false
EnPassant = true
PromotingType = Pawn
CastlingType = King
Declared in Generic x10:
PawnMultipleMove = Double
Declared in Generic 10x10:
Castling = Standard
Declared in Archchess:
KingsLeap = boolean
Rules
MoveCompletionDefaultRule
BasicPromotionRule
EnPassantRule
CheckmateRule
Move50Rule
CastlingRule
KingsLeapRule
RepetitionDrawRule
Evaluations
PawnStructureEvaluation
DevelopmentEvaluation
LowMaterialEvaluation
ColorbindingEvaluation
RookTypeEvaluation
OutpostEvaluation
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