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drtimer 43 ( +1 | -1 )
KBB vs K I'm trying to learn the elementary mates, and I'm having grief with KBB vs lone K, I can get the king in the corner, and I know what the final position/s should look like, but I keep stalemating the king, I can't quite visualise the 'killing moves', does anyone have any visual mnmonics or ways of seeing it. I can get there everytime but only by trial and error, my endings book says the maximum moves is 19, I can't get to less than 25.
alberlie 123 ( +1 | -1 )
ok. Assume.. that the king is already in the corner, your bishops are lined up on one side and your king is at the ready. (I purposefully don't use an actual example since you want to get the picture - in a quite literal sense ;o) ) His king has got three squares left (the actual corner square and the horizontal and vertical adjacent squares.)
First thing is to move your king in one step, coming from the same side where your bishops are. That restricts his king even further - he's got only two squares left. Most important here is, that by this king move you freed your one bishop since it's only that one square in the middle by which his king could escape and this is controlled by your king. So his king is limited to move back and forth along the other border and you now move that freed bishop around the bord to give him check on the border square. He must move in the corner and mate by the second bishop follows.
The important setup is the two bishops next to each other limiting the king to three squares and tthe king in front of the (from the viewpoint of the enemy king) "backward" bishop.

Does that make sense?
drtimer 18 ( +1 | -1 )
Thanks alberlie that makes things clearer, I'm starting to get quicker at it just from repeating it over and over again against the computer, not quite there yet but I'll get there eventually