[FEN "3r3r/p1pkpp1p/B1p2p1b/8/3P4/1Q2PN1q/PP3P1P/4K1R1 w -"]

16. Ke2 Rb8


w b wb bw | w b wb bw

w     an
    


16. Ke2      an
    


16...Rb8      an