Training 12387 error

http://fr.lichess.org/training/12387

wouldn't best move be e6 directly not bishopd5??
bishop x d5+ Ke8 and black saves the queen

nevermind Q is protected by knight on d5...

very weird tactics since it's not using the best moves for black...
After bishop takes king e8 as said and the black queen is saved zzzz

oh well

If e6 directly, the bishop recaptures the pawn, which frees the knight out of the pin and allows him to defend the queen on c7.

If the bishop recaptures I can't see how black saves the queen...

http://fr.lichess.org/training/25523

Another one where the move continuation for white is NOT the best move in my opinion.

1 Qa2 Qc3
2 Qa5 ?? Qe3 seems better?

if Qe3 he just retreats the rook to his back rank