Any opponent piece, except the opponent king.
No, you cannot put a king in check with another king in a game of chess.
Yes, in the game of chess, a king can put another king in check.
Yes, the king can capture in chess, but only under certain circumstances. The king can capture an opponent's piece by moving to a square that is occupied by that piece, but only if doing so does not put the king in check.
Yes, a pawn can put a king in check in a game of chess by moving diagonally to attack the king if it is in its path.
No, you do not need to say "check" when you put your opponent's king in danger in chess.
Yes, in the game of chess, a king can put a queen in check if the queen is in a position where it can be captured on the next move by the king.
In normal chess rules, the only piece that can be "checked" ... put in check ... is the opposing King. Technically, the King is never actually "taken", but rather put in checkmate; a state in which it is in check and no legal move to get it out of check exists. The game ends at this point, so there's little point in actually "taking" the King.
Yes, in the game of chess, the king can put the queen in check.
Yes, as long as the piece he's killing is only one space away and if it will not put him in check.
Yes, in a game of chess, the king can put the queen in check if the queen is in a position where it can be captured on the next move.
Yes, in the game of chess, a king can put a queen in check if the queen is in a position where it can be captured on the next move by the king.
No, you do not have to say "check" when you put your opponent's king in danger in chess. It is not a required rule, but some players choose to say it as a courtesy to their opponent.