5.Nd7+ Ke8 6.Ke6 Kd8 7.Kd6 Ke8 8.Bg6+ Kd8 9.Bf7 Kc8 10.Nc5 (continuing the knight's manoeuvre) 10.Kd8 11.Nb7+ Kc8 12.Kc6 Kb8 13.Kb6 (now the king is in the right position, a knight's move from the mating corner) 13.Kc8 14.Be6+ Kb8 15.Bd7 (now the defending king is confined to the right corner, and checkmate can be given) 15.Ka8 16.Nc5 Kb8 17.Na6+ Ka8 18.Bc6#ĭefense B: 4.Kd8 Here, the defending king tries to break out from the edge. Now there are two possible defenses:ĭefense A: 4.Kf8 Black clings to the "safe" corner, but loses more quickly. The key to the standard winning method is the Nf7-e5-d7-c5-b7 movement of the knight, forming a "W" shape.
1.Kg8 2.Bf5Ī waiting move, forcing Black's king to move so White can play 3.Bh7, taking away g8 from the king. The white bishop is positioned so that the next two moves, gaining control of g8, are possible. White to move will checkmate Black 1.Nf7+įirst White forces the king to leave the corner. The following method to push the king to the "right" corner is commonly given ( Müller & Lamprecht 2001:18, Dvoretsky 2006:279): The position on the right is one that typically arises after the first phase has been completed and the defender has headed to a corner of opposite colour to that of the bishop. Forcing the king out of the "wrong" corner to the "right" corner, if necessary.Driving the opposing king to the edge of the board by using all three pieces.Thus there are three phases in the checkmating process ( Müller & Lamprecht 2001:18): Since checkmate can only be forced in the corner of the same colour as the squares on which the bishop moves, an opponent who is aware of this will try to stay first in the center of the board, and then in the wrong-colored corner. Shaked knew the correct mating pattern and his victory catapulted him to becoming World Junior Champion, whereas a draw would have prevented him from winning the title. However, learning it teaches techniques that can be applied elsewhere ( Soltis 2010:13).Īlthough king, bishop and knight versus king may never be encountered in the careers of many chessplayers, a notable example of it occurring in an important occasion was in Tal Shaked's victory over Alexander Morozevich in the penultimate round of the 1997 World Junior Chess Championship. Should the chess hopeful really spend many of his precious hours he's put aside for chess study learning an endgame he will achieve (at most) only once or twice in his lifetime?"Īndy Soltis says that he has never played this endgame and most players will never have it in their career. ".mastering it would take a significant chunk of time.
#Checkmate with two knights plus#
On the other hand, Jeremy Silman includes the checkmate with two bishops but not the bishop plus knight checkmate because he has encountered the latter only once and his friend John Watson has never encountered it ( Silman 2007:33,188). Howell says that he has had it three times (always on the defending side) and that it occurs more often than the checkmate with two bishops ( Howell 1997:138). James Howell omits the checkmate with two bishops in his book because it rarely occurs but includes the bishop and knight checkmate. Opinions differ as to whether or not a player should learn this checkmate procedure. Incidentally, checkmate can be delivered in 460 different ways (positions) ( Sunnucks 1970:68). Checkmate can be forced without strictly using either of the methods. His "second triangle" or "middle triangle" comes up in the more standard methods (see below). This method takes five to ten more moves than Philidor's W method but there are fewer rules and it can still be accomplished before the fifty move rule takes effect. Some of the ideas of this method date back to 1780 but the complete system was first published in 1923 by Daniel Deletang ( Pandolfini 2009:49).
#Checkmate with two knights series#
Another method is known as Deletang's Method or Deletang's Triangles ( de la Villa 2008:17,204–9), involving confining the lone king in a series of three shrinking isosceles right-angled triangles, with the "right" corner at the 90-degree angle of the triangle. A method for checkmate using the "W" method was given by Philidor in his famous 1749 treatise, Analyse du jeu des Échecs.
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