Originally posted by nimzo5 Very nice! How long did it take for you to find Nd5 and did you see all the way to mate from there?
I saw that moving the Knight would allow check as soon as white played fxe5, i think ..Nd5 was the first move i calculated as keeping the white bishop on the board is desirable to give a follow up check. Obviously whites knight on d2 makes the move winning on the spot! Interestingly, white still loses after 10.fxg4 ..Qh4+ 11.Kf1 ..Qh3+ 12.Ke1 ..Bc5 where there is no defence against ..Qh4+ and mate on the following move. Winning the Queen actually lets white off the hook! 😀
EDIT: Actually, the correct line should be 10.fxg4 ..Qh4+ 11.Kf1 ..Qh3+ 12.Ke1 ..Bc5 13.Rg1 (to block the check) ..Qxh2 and white is busted...
EDIT2: Actually this line doesn't work, instead of 13.Rg1 white simply moves the knight on d2 and black is a piece down!
I plugged the position after 9...Nd5 into an online analysis engine, and it spat out this continuation: 10. Bb5+ c6 11. exd5 Qh4+ 12. Ke2 cxb5 13. fxg4 O-O-O 14. Kd3 Rxd5+
It gives a score of 0.81, although the position of White's king is still quite tenuous.
This takes nothing away from the idea of 9...Nd5, the correct defense for that is very tough to find in a blitz game.