1) Chess openers 2) Chess pieces 3) Chess row 4) Chess soldiers 5) Chessboard line 6) Chessboard pieces 7) En passant pieces 8) Exploited ones 9) Front line in a game 10) Future queens 11) Half a board game set 12) Half a chess set 13) Half of a chess set 14) Half of the chess pieces 15) Half the chessmen 1) Hacks 2) Hocks 3) Men 4) Octet