Chess puzzles #2

Words
19
Reading
1 min
9y
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~1 min

Black to play and win.

(position from: Barishev-Botvinnik, Leningrad 1926)

Captura de pantalla 2017-10-31 a las 17.37.45.png

Btw, the previous puzzle has not been solved yet!

Chess puzzles #2 | Ecency