I'm doing all the trainings.

In the section about Deflection, i was doing the “Deflecting the square defender” training (not the quiz, the training!)

In the third position i noticed that there are two possible deflecting possibilities that wins the same amount of material (a queen for a rook and a knight) but one solution is right, the other is wrong.

The engine also evaluates the right solution as better than the wrong solution, but i don't see why.

The right solution is to play 1.Ra8+ deflecting the bishop from defending the knight fork on g6.

The wrong solution is to play 1.Ng6+ deflecting the bishop from defending the back rank and forcing black to block the 2.Ra8+ check with the queen.