oops

app/src/main/java/chess/model/pieces/Bishop.java

@@ -20,8 +20,7 @@ public class Bishop extends Piece {
 		return 0;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
+	public boolean equals(Object obj) {
 		return (obj instanceof Bishop && ((Bishop) obj).getColor() == this.getColor());
 	}
 

app/src/main/java/chess/model/pieces/King.java

@@ -20,8 +20,7 @@ public class King extends Piece {
 		return 1;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
+	public boolean equals(Object obj) {
 		return (obj instanceof King && ((King) obj).getColor() == this.getColor());
 	}
 }

app/src/main/java/chess/model/pieces/Knight.java

@@ -20,8 +20,7 @@ public class Knight extends Piece {
 		return 2;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
+	public boolean equals(Object obj) {
 		return (obj instanceof Knight && ((Knight) obj).getColor() == this.getColor());
 	}
 }

app/src/main/java/chess/model/pieces/Pawn.java

@@ -24,8 +24,7 @@ public class Pawn extends Piece {
 		return 3;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
+	public boolean equals(Object obj) {
 		return (obj instanceof Pawn && ((Pawn) obj).getColor() == this.getColor());
 	}
 }

app/src/main/java/chess/model/pieces/Queen.java

@@ -20,8 +20,7 @@ public class Queen extends Piece {
 		return 4;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
+	public boolean equals(Object obj) {
 		return (obj instanceof Queen && ((Queen) obj).getColor() == this.getColor());
 	}
 }

app/src/main/java/chess/model/pieces/Rook.java

@@ -20,8 +20,7 @@ public class Rook extends Piece {
 		return 5;
 	}
 
-	@Override
-	public boolean equals(Piece obj) {
-		return (obj instanceof Rook && ((Rook) obj).getColor() == this.getColor());
+	public boolean equals(Object other) {
+		return (other instanceof Rook && ((Rook) other).getColor() == this.getColor());
 	}
 }