Here's a short King's Gambit Declined game (no pun intended), with analysis borrowed from ECO, 5th edition. White missed a chance to seize a big advantage fairly early on, and then the players soon after that agreed to a draw in a rather murky position - not an all too common example of why there have been a high percentage of draws in elite chess for some time, perhaps(?):
[Event "Candidates match"]
[Site "London, England"]
[Date "1991"]
[Round "2"]
[White "Short, Nigel"]
[Black "Speelman, Jonathan"]
[Result "1/2-1/2"]
1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.Nc3 Nf6 5.Bc4 c6 6.d3 {6.fxe5 is more normal.} b5 {6...0-0 7.fxe5 dxe5 leads to a line of 6.fxe5 where White has committed a move to playing d2-d3 a bit early. After 8.Qe2 [better is 8.Bg5 though 8...Be6 eventually leads to equality in ECO] 8...b5 9.Bb3 Bg4 10.Be3 [with Black already given time to castle, Bxf7+ is now unplayable for White - K.P.] 10... Nbd7 11.0-0 Qb6! Black had a slight edge in Mirumian-Blatny, 1997.} 7.Bb3 Qe7 8.Qe2 Nbd7 9.Rf1 Bb4 {ECO suggests 9...Bb6!? intending ...Nc5 with an unclear position.} 10.fxe5 dxe5 11.g4 {Dubious. Better is 11.Qf2 0-0 [11...Nc5 12.Qg3 also gives White a big edge.] 12.Nh4 with a large advantage for White.} Nc5 12.g5 Nfd7 13.Bd2 a5 14.Nh4 Nxb3 {This, the final position, is rated as unclear by ECO.} 1/2-1/2
There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy.
Hamlet (1.5.167-8), Hamlet to Horatio.