The Bongcloud Opening is an aggressive and sound chess opening, championed by many including Fischer, Tal, Capablanca and Kasparov, that starts with e4, e5 and Ke2!!
This opening develops the King to a good spot and allows
White to control the center with his king preventing Black from using the weak d3 and
f3 squares to attack
White's king.
White also gains a tempo, which
may lead to Zugzwang later, as after Qe1!, forming a King and
Queen battery, an Xray attack on Black's King is threatened and Black has to waste a move to respond. Other benefits of the opening include the negation of Back-rank mates as the King is no longer on the back rank and that Black will most likely overextend his pieces in an attempt to launch an assault on the
safe White King.
Lack of documentation on the opening forces Black to get out of the book immediately and blunder with moves like Nf6??.
