Codex/fix see handling for self capture

src/position.cpp

@@ -1660,10 +1660,10 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
           board[capsq] = NO_PIECE;
       if (captures_to_hand())
       {
-          Piece pieceToHand = !capturedPromoted || drop_loop() ? ~captured
-                             : unpromotedCaptured ? ~unpromotedCaptured
-                                                  : make_piece(~color_of(captured), main_promotion_pawn_type(color_of(captured)));
-          add_to_hand(pieceToHand);
+           Piece pieceToHand = !capturedPromoted || drop_loop() ? make_piece(sideToMove, type_of(captured))
+		  				 : unpromotedCaptured ? make_piece(sideToMove, type_of(unpromotedCaptured))
+						                     : make_piece(sideToMove, main_promotion_pawn_type(color_of(captured)));
+		  add_to_hand(pieceToHand);
           k ^=  Zobrist::inHand[pieceToHand][pieceCountInHand[color_of(pieceToHand)][type_of(pieceToHand)] - 1]
               ^ Zobrist::inHand[pieceToHand][pieceCountInHand[color_of(pieceToHand)][type_of(pieceToHand)]];
 
@@ -1673,6 +1673,7 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
               dp.handCount[1] = pieceCountInHand[color_of(pieceToHand)][type_of(pieceToHand)];
           }
       }
+
       else if (Eval::useNNUE)
           dp.handPiece[1] = NO_PIECE;
 

src/variant.cpp

@@ -596,7 +596,7 @@ namespace {
         v->flagRegion[WHITE] = Rank8BB;
         return v;
     }
-
+	
     // Three-check chess
     // Check the king three times to win
     // https://lichess.org/variant/threeCheck
@@ -614,6 +614,7 @@ namespace {
         v->nnueAlias = "3check";
         return v;
     }
+
     // Crazyhouse
     // Chess with piece drops
     // https://en.wikipedia.org/wiki/Crazyhouse
@@ -625,6 +626,7 @@ namespace {
         v->capturesToHand = true;
         return v;
     }
+
     // Loop chess
     // Variant of crazyhouse where promoted pawns are not demoted when captured
     // https://en.wikipedia.org/wiki/Crazyhouse#Variations
@@ -634,6 +636,23 @@ namespace {
         v->nnueAlias = "crazyhouse";
         return v;
     }
+
+	//Capture-Anything
+	// https://www.chess.com/terms/capture-anything-chess
+   Variant* captureanything_variant() {
+	   Variant* v = chess_variant_base()->init();
+	   v->selfCapture = true;
+	     return v;
+    }
+
+    //RecycleChess
+    //	# https://brainking.com/en/GameRules?tp=9
+    Variant* recycle_variant() {
+	 Variant* v = crazyhouse_variant()->init();
+       v->selfCapture = true; 
+  return v;
+    }	   
+
     // Chessgi
     // Variant of loop chess where pawns can be dropped to the first rank
     // https://en.wikipedia.org/wiki/Crazyhouse#Variations
@@ -1872,6 +1891,8 @@ void VariantMap::init() {
     add("isolation7x7", isolation7x7_variant());
     add("snailtrail", snailtrail_variant());
     add("fox-and-hounds", fox_and_hounds_variant());
+	add("captureanything", captureanything_variant());
+	add("recycle", recycle_variant());
 #ifdef ALLVARS
     add("duck", duck_variant());
 #endif

src/variants.ini

@@ -2051,8 +2051,3 @@ mandatoryPiecePromotion = true
 # Iron pieces demo: pawns are uncapturable; everything else behaves normally.
 [iron-pawns:chess]
 ironPieceTypes = p
-
-# Chess, but you may capture your own pieces and pawns
-# https://www.chess.com/terms/capture-anything-chess
-[capture-anything:chess]
-selfCapture = true