Because the opening is so rarely seen at the top, theory has at many points not kept up with the latest assessments of strong engines.
The game began 1.e4 e5 2.Nc3 Nf6 3.Bc4.
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I seem to have first had this position as Black in Guernsey 14 years ago, when I played 3...Nc6, and went on to lose. Two years later, in Gibraltar, I tried 3...c6!?, and again lost.
Since then I have only continued 3...Nxe4!?, scoring, including this Benidorm game, +5=1-3, performing 161 elo above my average rating in those games.
I thought ...Nxe4 was both well-known and best, so imagine my surprise on discovering in ChessBase's 2026 Mega database that two moves, 3...Bc5 and especially 3...Nc6, are much more popular.
Not only are those moves more popular, but they are preferred by Stockfish17.1 and Dragon1, although it should be added that they do not reckon the text is a mistake, or even dubious.
After the further moves 4.Qh5 Nd6 5.Bb3 I was aware that 5...Nc6 6.Nb5!? g6 7.Qf3 f5 8.Qd5 Qe7 9.Nxc7+ Kd8 10.Nxa8 featured in the first game of John Nunn's 1987 Batsford book, Secrets Of Grandmaster Play, co-authored with Peter Griffiths.
I had no desire to go down such a complicated line, especially as I knew that, while in the pre-computer era the compensation Black receives was regarded as very promising, engine analysis has shown ways for White to successfully hang on to the extra material.
I therefore played 5...Be7, which I had tried three times before, each opponent replying with the mainline 6.Nf3.
It seems, however, that Ioniță was aware the engines prefer, albeit marginally, 6.Qxe5, which he played quickly.
After 6...0-0 the commonest continuation in Mega26 is 7.Nge2, but Ioniță played 7.Nf3!?, which again is the engines' preference, although again they do not believe there is much difference between the two moves.
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Black has two obvious continuations, both of which hit the white queen - 7...Nc6 and my choice, 7...Bf6!?
Of the first 10 games to reach the position after7.Nf3!? in Mega26, eight featured my choice, and the other two saw 7...c6!?
Ioniță continued with 8.Qf4!, which the engines agree gives White a slight edge (they reckon every other continuation is at least marginally favourable for Black).
After 8...Re8+ I was pleased with my position, since White must lose castling rights (9.Ne2? can be met by the winning 9...Re4!)
However, after 9.Kd1 Stockfish17.1 gives White a slight edge - the white king is safe on d1, and Black has difficulties both developing the queenside, and avoiding falling to tactics based around the vulnerability of f7, along with Black's lack of a pawn presence on the central squares.
Black's problems only gradually dawned on me, and their subtlety perhaps explains why Dragon1 reckons Black can equalise with the apparent-novelty 9...b6!? (Stockfish17.1 disagrees, reckoning the move increases White's advantage).
LESSON: going over sharp but unfashionable opening lines with modern engines is a good way to find improvements that are either unknown, or at least not known among players who have not done such work.


