#10
An evaluation of -0.9 in the opening says nothing. Engines are weak in openings without their opening books, as 32-men positions are too complex with too many possibilities for any meaningful evaluation within their calculation horizon. King's Gambit has been played by top humans in top encounters, so it is considered balanced despite the engine evaluation.
The drop down menu was meant to offer a selection of openings considered balanced.
If you enter your FEN, then you can enter an unbalanced opening, that would distort the rating system.
A blatant example is upside down chess, which wins for white and tricks the players.
Another example would be some refuted opening.
An evaluation of -0.9 in the opening says nothing. Engines are weak in openings without their opening books, as 32-men positions are too complex with too many possibilities for any meaningful evaluation within their calculation horizon. King's Gambit has been played by top humans in top encounters, so it is considered balanced despite the engine evaluation.
The drop down menu was meant to offer a selection of openings considered balanced.
If you enter your FEN, then you can enter an unbalanced opening, that would distort the rating system.
A blatant example is upside down chess, which wins for white and tricks the players.
Another example would be some refuted opening.