How To Scroll In Blackberry Without Trackball

triangle maneuver

In a triangle maneuver is defined as a sequence of moves in which one party carries out a march on the triangle to the Zugrecht in the same position to the opponent submit. This is possible if the opponent can only commute between the two fields.

finds In general, this maneuver in pawn endings.

White on the train Zugrecht would like to submit to black in order to clamp the black king on the board edge.

1.Ke5 KC6 2.Kd4 Kd7 3.Kd5

now has been transformed in the same position, but with black on the train.

3rd - Kc8 4.Kd6 (? Kb8 4.c6 is drawn!) Kd8 5.Ke6 Kc8 6.Ke7 Kb8 7.Kd7 Ka8 8.c6 + -

shows a nice example of a triangular maneuver also the following problem of Carel Mann (1893). The default is Matt in 4

The practical benefits to a tournament player is low, since the easiest course 1.Dh4 + + Kf5 2.Dxg4 profit guarantees.

But to satisfy the requirement in Matt 4, White must play a triangle maneuver, for it is clear that Black would be checkmated on the course alignment (1 - Kf5 2.Dd5 #; 1 - f5 2.Dh4 #).

1.Da8! Kh6 (1 - f5 + Kh6 2.Dd8 3.Dh8 KG5 4.Dh4 + #) + 2.Dh8 (1.Da8 therefore had to be played, and not 1.Db7) KG5 3.Dh1! (now reached the starting position with Black to train;! White can checkmate as described above).

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