Originally posted by black beetle
...and so with the sequence 14. ...Nd8 15. Rc1 Nf7 the Black feels comfortable with his centre;
Yes that looks a very solid, if rather passive position.
My only "algorithms" are 2 books & a 4.5m game database.π
Some smart-arse will say that the Morra is refuted by such-and-such move order but the truth is that even in the toughest lines, White stands practical chances of the win.
There is no "refutation" other than if you play against an engine; of course being a pawn down in a tactical open game you are doomed to defeat.
Against an average Sicilian Defence player, who's knowledge of the Morra is probably sadly lacking simply because they only face it very rarely, White stands excellent chances of winning & 100% chances of having a fun game.
I have yet to play a Morra game, here or OTB that I haven't enjoyed & that is what is important to me, more so than winning.