00:00So let's start with a simple position. If you look at this endgame it seems
00:06roughly even even black has an extra pawn but there's a trick that white can
00:13use based on the pin concept and also the fact that our pawn if we play white
00:21so our pawn h6 is advanced that's why if we can force the change of of rooks
00:29after rook g8 check kings of seven rook g7 then after you change our pawn will
00:37advance so black has to defend this rook so we can go now g5 but then we bring
00:45our bishop we continue this attack we are trying to force this exchange and you
00:51see the pin legally black rook cannot leave the seventh rank so it goes on d7
00:56it desperately tries to stay stay its course but we continue the attack we still
01:02pushing this rook it goes back on f7 hoping desperately for repetition of the moves
01:07but now we attack it from e8 but that's from there and it seems that black has
01:14nothing else but to take our rook and then our pawn will advance to promotion and
01:21win will win the game just you know for completing this sample I can say that if
01:31black instead of knight g5 goes on d6 with a knight then we still attack the rook with our bishop if knight takes the bishop then rook is hanging and after rook d7 we attack now from e6 reaching the same result
01:47result so this simple example shows you the power of the pin and how much it limits the
01:56opponent's pieces if they're pinned and what can you do by using
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