The endgame with a K+2Ns versus K+P is unusual because the by possessing extra P the K cannot be stalemated (provided the blockade on the P is lifted at the proper moment, of course) and therefore the stronger side can often force mate. There are technical requirements to win this ending known as the "Troitzky line" and it may require up to 115 moves. That’s theoretically speaking of course. Andor Lilienthal failed to win it twice in a six-year period in Norman-Lilienthal and against Smyslov. However, it has been won. Jakob Seitz (1898-1970) the German–Argentine master once won this ending against Znosko-Borovsky. View that game.
For several days now I have been messing around with this ending and
discovered the following position in which White also has a P. I
found it is quite difficult, there being only one first move that allows
White to force the win. I also
discovered a couple of other positions where there is only one move leading to a
What’s here?...My comments about chess and my pdf booklets on players and tournaments. PLUS links to sites about chess history, scholastic help, chess books (on line and downloadable), places to play chess online (real time and correspondence), Soviet chess sites, chess instruction, recommended books, chess engines, endgame databases and other really great Blogs. You will find posts about chess engines, well-known and not-so-well-known historical figures, great games and a lot of other things about chess that I have found interesting or informative. There are also posts on improvement containing subject matters like pattern recognition and how chess masters think. Most improvement advice has been gleaned from the masters themselves and psychological studies which have attempted to understand the thought process of chess masters. Be sure to take time to browse the whole Blog for interesting material. Your comments and suggestions are always welcome.