[FEN "r3k2r/pbp2p1p/1pn2p2/3q4/3Pp3/P1PBPN2/5PPP/1R1QK2R w Kkq"]

13. Rb5 Qe6


w b wb bw | w b wb bw

w     an



13. Rb5      an



13...Qe6      an