morphyvsfischer: Apparently Kaspy lacked trust in his pet variation AGAIN after 4 d4.
10...Bxc3? 11 Qxc3 dxc4 12 Qxc4 and white has better chances, with two good bishops.
16...Nxe4? (not a good way of exchanging pieces) 17 Bxe4 Nxc4 (...Bh3 18 Bb2! Bxf1 19 Rxf1 and the bishops seem more active than the rooks) 18 Bd5! (Qxc4 Qxe4 is equal) Ne5 19 Bb2 and the bishops give white a clear advantage
16 ...Bh3!? 17 Bxh3 Nxe4 18 Qc2 Nf3+ 19 Kh1 Qe5 20 Bg2 Qh5 (aiming to attack the white king) 21 h3 Nfg5 22 h4 Rad8 23 Ra2 is a very sharp, interesting position, avoiding a likely draw.
Attempting to retain the bishops by 18 Qc2 gives black good compensation after ...Bf5 19 Bb2 Qe6 threatens ...Ng5 (since the bishop is guarded) with good compensation for the pawn.
Another boring draw could have been much more interesting.