00:00Sample Fischer's brillancy. Let's look at end games. It's status. No pieces left. The board is open, but still interference could be a very, very powerful tool. So we have a very simple end game. White goes this way. So this port on e7, just one move away from promotion.
00:22But how we can get there? Because promoting the queen now doesn't work since our bishop is hanging. And then, just imagine, you make this mistake, and then rook takes his three, it's a skewer, and we just lose our queen and even lose the game.
00:37Of course, we can move the bishop. Say we can do bishop here, but then rook goes on e8, and it just controls e8 square, and then the game will be a draw.
00:48So how can we manage to prevent rook from appearing there, and also making sure that it doesn't use e-file for its counterattack, preventing us from promoting our pawn?
01:08The move is bishop a7. It's a sacrifice, but it's also interference. Now, if black takes it with the rook, then we simply promote the queen.
01:31And there is no check here. If black tries to renew the threat by going back and trying to have a check, then we move king on f4.
01:51Black gives a check, and then we sacrifice the bishop again, and bring king.
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