The victory was Wales' second in three games in Group E
Gareth Bale scored a hat-trick, including a 93rd-minute winner, as Wales fought back to beat Belarus 3-2 Sunday in World Cup qualifying.
The victory was Wales' second in three games in Group E and moves them up to third, one point behind the second-placed Czech Republic with a game in hand.
The group winners qualify automatically for the 2022 finals in Qatar with the runners-up heading into the play-offs.
Belgium lead the table with 10 points from four matches and host the Czechs later Sunday.
Bale, who has broken back into the Real Madrid team this season under Carlo Ancelotti, gave the nominal visitors a fifth-minute lead from the penalty spot in Kazan.
The game was being played in Russia due to EU and UK sanctions against the Belarusian government.
But Lokomotiv Moscow's Vitali Lisakovich levelled with a spot-kick just before the half-hour mark, and then set up Pavel Sedko to turn the game on its head a minute later.
Wales had to be patient in the second period, only equalizing in the 69th minute through another Bale penalty.
Cardiff City youngster Mark Harris, making his debut as a substitute, caused havoc in the Belarus defence in stoppage time, with his shot saved by Sergei Chernik.
But the ball eventually found its way to Bale and his snap-shot squirmed under the body of the Belarus goalkeeper to spark wild Welsh celebrations.