What is the worst opening that either side can play in chess? This is just for fun purposes.
In my opinion, it is the Damiano Defense, as it is proven to be losing by force as black.
how's damiano defense losing by force?
It would be losing via 3. Nxe5 Qe7 4. Nf3 Qxe4+ 5. Be2, where although White is not up any material, the advantage is still +1.98, at least according to Stockfish.
i meant losing by force and not positionally worse. the irish gambit is worse because you are simply giving up a knight without enough compensation
Well, if 3. Nxe5 fxe5, Qh5+ is winning by force for White. If g6, then Qxe5+ wins the rook and if instead Black plays Ke7, 5. Qxe5+ Nd7 6. Bc4+, Black either gets checkmated or loses back the material with interest.
By the way, 2. f6 is mistake in Damiano defense.
Please remember what I said.