add Ajax Orthodox, Petty, Haynie (#730)

src/variants.ini

@@ -204,7 +204,7 @@
 # mustDropType: piece type for which piece drops are mandatory [PieceType] (default: *)
 # pieceDrops: enable piece drops [bool] (default: false)
 # dropLoop: captures promoted pieces are not demoted [bool] (default: false)
-# capturesToHand: captured pieces are go to opponent's hand [bool] (default: false)
+# capturesToHand: captured pieces go to opponent's hand [bool] (default: false)
 # firstRankPawnDrops: allow pawn drops to first rank [bool] (default: false)
 # promotionZonePawnDrops: allow pawn drops in promotion zone  [bool] (default: false)
 # dropOnTop: piece drops need to be on top of pieces on board (e.g., for connect4) [bool] (default: false)
@@ -1777,4 +1777,37 @@ stalemateValue = loss
 wallingRule = edge
 #not ready yet. Other wall variants are "move and wall", this is "move or wall".
 #need to figure out way to do this ie. write code for:
-#wallOrMove = true
+#wallOrMove = true
+
+#https://www.chessvariants.com/rules/ajax-orthodox-chess
+[ajax-orthodox:chess]
+pieceToCharTable = PNBRQ.............MKpnbrq.............mk
+customPiece1 = r:RmF
+customPiece2 = n:NmK
+customPiece3 = b:BmW
+customPiece1 = m:KAD
+promotionPieceTypes = mqnbr
+startFen = rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[MMmm] w KQkq - 0 1
+pieceDrops = true
+whiteDropRegion = *1
+blackDropRegion = *8
+
+#https://www.chessvariants.com/small.dir/petty.html
+[petty:chess]
+maxRank = 6
+maxFile = 5
+startFen = qkbnr/ppppp/5/5/PPPPP/QKBNR w - 0 1
+castling = false
+doubleStep = false
+promotionRegionWhite = *6
+
+#https://www.chessvariants.com/small.dir/haynie.html
+[haynie:chess]
+maxRank = 6
+maxFile = 6
+startFen = rbqkbr/pppppp/6/6/PPPPPP/RBQKBR w KQkq - 0 1
+doubleStep = false
+promotionPieceTypes = rbq
+castlingQueensideFile = c
+castlingKingsideFile = e
+promotionRegionWhite = *6