Blitz tournament in Moscow.

Regarding the infrastructure, I don't have any specific recommendations at first glance. If you go up and forward towards the center (up to the bridge, then down), walk along the train station, at the end, near the metro exit, opposite, on the corner with one of the Brest streets, you'll find Ёлки-Палки and Этаж.
Then, on the other side of Leningradka, diagonally, there's a place called "Время есть". As for shops, I can't recall any specific ones right away, although I'm not very familiar with the area. So, it might be a good idea to bring your own supplies.