Novelties

Have you tried any chess novelties in the opening that worked out well for you?Please discuss

I mean have you ever founf and played a move out of the book that gave you an advantage...eg an opening trap?

This wasn't an opening trap, just simply a move I've never seen in a book, but played twice as Black and won one, drew the other.  It's in the French Tarrasch.

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 Qb6 9.Nf3 f6 10.Nc3 is a known gambit line for White, where the main line is 10...fxe5 11.dxe5 Ndxe5 12.Nxe5 Nxe5 13.Qh5+ Nf7 and normally a piece is placed on b5.  My novelty is 10...a6 intending 11...fxe5.  Both times, if memory serves me right (these 2 games were in 1999 and 2000), White castled on move 11.

I found one when analysing a position (according to chess com database its never been played).

First off, I think Knight c3 is better then Bd3. If not for the very reason that ...d5 is something we want to avoid for white. Knights before bishups.

I played a move (on move 8 on the White side of a QGD Chigorin) that I THOUGHT at the time was a novelty... but later on I found that Ivanchuk had played it in a simul before.

of course, i mentioned that in the annotations, i even gave it a ?! dubious mark. However, theres very little you can do to avoid d5, even after the better Nc3. Black is already better after white plays d4.

Which is why theres a novelty on move 6, very few masters will stumble into a sub optimal line of a sub optimal variation. Though it is common amongst <1800 players.

Has anyone heard about the sicilian vespers of 1958?it was certainly a novelty...

but was also used in the past...

i just cannot recall the date...