Black to move. Find the one move that wins. About 1350 ELO.
From a real ChessLvl game against Yuki Tanaka (LVL 1). Black to move: one move wins.
Move one piece out of the way and let another piece behind it attack.
Move one piece out of the way so another piece behind it attacks. Two threats in one move.
Find your own pieces lined up behind each other, aimed at something valuable.
Discovered attacks hit twice: the piece that moves and the one it uncovers. Look for pieces lined up behind your own.
Solve it on the board above, or take a hint. Every ChessLvl puzzle is checked by a chess engine to have exactly one best move.