I just went to a national chess tournament with this, and three of my four matches as white I won, with one draw (I lost my games as black, because I don't know good black openings)
The most unknown chess opening of all
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cowlquape
Dec 18, 2018
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#21
Dec 18, 2018
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#22
I already posted the opening, but here's an example of one of my matches in the tournament with this opening:
The wing gambit of the French, 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4
There is also the wing gambit of the Sicilian 1.e4 c5 2.b4
Resigning might save you some time compared to playing Nb8. In the Alekhine there is 1. e4 Nf6 2. e5 Ng8?! which in that opening is already a questionable move but at least it has the purpose to go after e5 eventually. Nb8 doesn't even try that (exploit a weakness in the white camp), it's just a horrible mistake.
It doesn't really matter if it's in the database... The move is still horrible. One game is Wei Yi against a 2500 and Wei won with Bf1. They propably talked about the opening before the game. They repeated Nc6 Bb5 and then Nf6 from black. They just gained a minute on the clock but if white doesn't go along with the joke black has a problem.
Dec 21, 2018
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#26
An unknown opening that is actually good, unlike the other stuff in this thread:
White is basically playing the Philidor endgame line a tempo up. Definitely equal but interesting and certainly will surprise black players.
@my137thaccount I had a trainer who played that opening with black. Although white is slightly better, he would win very often because of his supreme endgame skills.
Long ago, my dad was playing speed chess with some dudes in a park (in Russia). The game started 1.e4 e5 2.Nf3 Nc6, and then my dad's opponent played 3.Ng1 - saying basically "f-you, I don't respect you as an opponent". So my dad played 3...Nb8!! - saying "f-you too". They went back and forth like this a few times, until one of the spectators told them to stop screwing around and play.
Most obscure openings are absolute junk, including most stuff in Schiller's book.
The only relatively unknown opening I believe in is the Nimzowitch: 1.e4 Nc6. I have played it multiple times against masters in tournaments when needing a win in the last round as black.
1. e4 Nf6 2. e5 Ng8 is perfectly sound--Black is not behind in development nor does he have any weaknesses, but White does. Petrosian played this. 1. e4 e5 2.Nf3 Nc6 3. Bb5 Nb8, on the other hand, is a joke. (1000 players, the first line has a real justification, White took all his time to do what? To overextend his Pawn. So Black's horsing around, while not best [2.... Nd5] doesn't lead to a bad game, either.)
After 1. c4 e5 2. e3 Nc6 3. Nc3 Bb4 I would play 4. Nge2 or even 4. Nd5 (although 4. Qc2 is also perfectly good), but 4. d4 could actually be okay seeing as the Bc1 has ready access to the a3-f8 line after 4. ... Bxc3+ 5. bc:, Would have to think about that, but who has time?
Dec 21, 2018
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#31
Loudcolor wrote:
the one you make up on the fly
If the opening you invent controls the centre and develops pieces, you won't be the first to play it. I could invent all sorts of rubbish like 1.c3 and 2.Qc2 but if it doesn't follow opening principles it will be unknown, and if it does it will at least be a sideline if not a mainline.
1. Qxe8. Gets 'em every time
Dec 21, 2018
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#33
Aluicious wrote:
1. Qxe8. Gets 'em every time
Taking the king is not checkmate
Dec 21, 2018
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#34
its the rat attack.
happens when a mouse darts across the board and the pieces go flying when you chase it.
Dec 21, 2018
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#36
SaintMark wrote:
It's not Mark's Opening and it's not unknown. It's just the Jobava-Prie Attack
just what the doctor ordered for Christmas 
JJZ03 wrote:
Post the most unknown opening that you feel actully isn't junk.
OK, so I guess that leaves out the Rice Gambit.
