OpenChess

The game in question ends with

1 Qe5-e7+! Ng8xQe7
2 d6xNe7+ Kf8-g8 (... Kf8-e8)
3 Ne4xf6#

Thanks

Here is the diagram source: https://github.com/ornicar/pgn4web/raw/ ... actics.pgn

[Event "Lahti"]<br> [Site ""]<br> [Date "1980.??.??"]<br> [Round "770"]<br> [White "Heuttinen"]<br> [Black "Freund"]<br> [Result "1-0"]<br> [Annotator "T2X"]<br> [EventDate "1980.??.??"]<br> [SetUp "1"]<br> [FEN "1r1r1kn1/7R/b1pP1pp1/p3Q3/2p1N1P1/P3qP2/1P1R4/2K2B2 w - - 0 1"]<br> [PlyCount "5"]<br> <br> 1. Qe7+ Nxe7 2. dxe7+ Kg8 3. Nxf6# 1-0