CSKA Moscow have reduced the gap between them and Zenith St Petersburg to four points on the back of their 2 - 1 win over Terek Grozny in the 18th round of games in the Russian Premier League. <br /><br />Only yesterday, the coach of the Moscovites stated that most of the goalscoring responsibilities in the second half of the season will be taken by Ahmed Musa following the sale of Ivory Coast international Seydou Doumbia in the winter transfer market.<br /><br />The Nigeria international is unfazed by the task at hand, with the former Kano Pillars star scoring either side of the half to secure all three points for the Army Men.<br /><br />The 22- year - old has netted four braces for CSKA Moscow since he arrived the club from VVV Venlo three years ago.<br /><br />Musa scored two goals against Kuban on two occasions as well as netted a pair against Rostov.&nbsp; <br /><br />Photo Credit : pfc - cska.com<br />