I think the Bishop Gambit is certainly playable for White, but Black need not fear it:
I am only aware of one game Morozovich-Anand, and that was played in 1995. Was there a more recent encounter?
As for the 1995 game, the opening position was a rather unlear affair. But I would like to point out Black need not put his bishop on b4, since Bd6 is a reasonable alternative.
Reference games include two encounters Kennaugh-Hebden in 2006 and 2007 and Navarra-Gelfand,2008.
I would not go so far as to claim it a refutation, or something that would bring Black a forced advantage. But imo and that of others it is a perfectly sound reply.
This line was allready discussed some years back.
@Markovich Is this another road to the Hanstein?
What he actually gives is
4.Nf3 g5 5.Nc3 Bg7 6.Nd5!? d6 7.d4 h6 8.c3 Nf6 9.h4. Actually it is not, though its very much alike. The difference is that
white has not played an early 0-0, but has played h4 instead.
These are the marks of the Philidor-variation, although the most
common move order starts of with 3.Nf3,g5 4.d4 rather than 3.Bc4
The special part of the transposition is white's early 6.Nd5
which makes it possible to play c3 without blocking the
development of his queens knight.
(the knight seems quite happy on d5, because black's early Nc6 makes
it difficult to drive away).
Still the postion after white's 9th move might be reached by 'normal means':
3.Nf3,g5 4.Bc4,Bg7 5.d4,h6 6.Nc3,d6 7.Nd5,Nc6 8.c3,Nf6 9.h4
In fact this position is quite old:
we have transposed to Pillsbury-Schlechter, Vienna 1903.
From this postion black has played to variations:
(a)
9....g4 10.Nd2!, Nh5?! 11.Nf1!,Bf6 12.Bxf4,Nxf4 13.Nxf4 += Pillsbury-Slechter, Vienna, 1903 Playing through the entire game I have the impression that black
should either play 10....Nxd5 or 11...Be6.
(b) 9....Bg4 is a more modern variation
[
b1] 10.Nxf6+, Qxf6 11.Kf2?!,0-0-0 left black on top in
Sochachki-Fougerit, France 2004. [b2] 10.hxg,hxg 11.Rxh8,Bxh8 is a better try
but it certainly does not promise white an advantage
Furhoff-M.Andersson, Sweden 1994. But that is not all that can be said. Black has an interesting side
variation at his disposal:
8.c3, Nge7 (iso Nf6; other playable moves: 8...Na5, 8...Be6)
9.0-0, Nxd5 (note that this position can also
arise by transposition from 8...Nf6 9.0-0 (iso h4),Nxd5
10.Bxd5,Ne7
11.Bb3,Ng6
12.g3 We have been following
Aljechin-Mikulka, 1923 Now Mikulka played 12...fxg3? and saw his advantage dissapear
after 13.Nxg5!
But when the same position was reached by transposition in
in
Laszlo-Gymesi, Hungary 1994 black played
12......Bh3!
13.Rf2, Qd7 and black holds the advantage.
Dangerous weapons can cut both ways 
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C33: Refuting Kings Bishop Gambit!! (Read 43569 times)
