Rza could have taken his Queen super early by moving his rook up one space.  Also could have taken it before lex took his rook by moving his rook top row to check his king,(reply>), Neither one works.  Rf5 doesnt trap the queen either because lex can play ne2 check, a very tricky move, if queen takes knight then lex can take the bishop on c1 with check,(reply>), That rook discover check doesnt work because RZA bishop pinned to his own king, check again!