"This e5 variation is a refutation of the Ryder? 2 pawns up, it is a big material advantage.
I think in the other variations...I think about
5...Nc6 6.Bb5 seems ok for White
5...c6 6.Be3 is often played against me and
5..e6 6.Bf4 (6...Qxd4? 7.Nb5 is strong) 6...Bd6 7.Bg5 seems standard here
5...g6! 6.Bf4 seems to be a good plan for black. but I like to place my bishop on e5...
Anyway, Tim, you are very kind to do a blog on the Ryder accepted...
I heard about the Schiller book but nothing more... it seems excellent... Do you know if he says that the Ryder is refuted by Qxd4?"
"Refuted" in chess opening terminology has to do with theory or evidence. Basically, a variation is refuted if: when you play it, you lose.
There are three types of "refuted" variations:
1. When computer analysis overwhelmingly favors your opponent's side.
2. When the performance ratings are significantly below expectations.
3. When you lose regularly with this variation against your opponents.
Let's look at each one individually in regards to the Ryder Gambit and 7...e5 line.
1. Computer analysis favors Black, but not quite by two pawns. White usually has compensation for only one of the two pawns sacrificed. That is bad for White.
2. Performance rating for the Ryder is above expectations but after 7...e5 below. 5.Qxf3 scores 60% with a performance rating +52 points above actual rating (1346 games), but after 7...e5 White scores 47% with a performance rating -42 points below actual rating (272 games). This means about 1 in 5 players as Black has followed up 5.Qxf3 with all three moves, Qxd4/Qg4/e5. Those who play this way have scored well with Black. In the games where the other four players varied, White did well.
3. Are your opponents likely to regularly find very good moves for Black? The higher they are rated, the more likely they are to know this stuff. Diemer was still winning with the Ryder Gambit in his 80s, so there is practical value, along with real risk.
IM James Rizzitano recommends 7...e5! for Black in his book "How to Beat 1 d4" ("A sound and ambitious repertoire based on the Queen's Gambit Accepted. Rizzitano sites a few games as examples, the first one being Alex Lane - Tim Sawyer played in one of Tom Purser's thematic BDG tourneys in 1997. Lane chose 8.Be2. Better seems to be 8.Nf3 or 8.a3, but Black stands better in theory. To sum up I quote International Master James Rizzitano again: "The Ryder Gambit is unsound and the reader should be extremely sceptical of any claims to the contrary."
Lane - Sawyer, corr BDG thematic (2), 1997 begins 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3 Qxd4 6.Be3 Qg4 7.Qf2 e5
London 2.Bf4 Playbook: How to begin. London 2.Bf4 Tactics: How to win quickly.
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Chess Training Repertoire 3 (150 Openings White & Black)
