During extraction of gold, the gold ore is treated with aqueous KCN solution as shown by the equations, which are not balanced, to get compound X which is further reduced by Zn to obtain compound Y and metallic gold. The steps are gold ore $$+ \text{CN}^- + \text{H}_2\text{O} + \text{O}_2 \rightarrow [\text{X}] + \text{OH}^-$$ and $$[\text{X}] + \text{Zn} \rightarrow [\text{Y}] + \text{Au}$$. Identify X and Y.