Post the time it took for you to figure out this puzzle. White to play and mate in 1.
http://en.lichess.org/analysis/1Bb3BN/R2Pk2r/1Q5B/4q2R/2bN4/4Q1BK/1p6/1bq1R1rb_w_q_-
The position is perfectly legal.
http://en.lichess.org/analysis/1Bb3BN/R2Pk2r/1Q5B/4q2R/2bN4/4Q1BK/1p6/1bq1R1rb_w_q_-
The position is perfectly legal.