Every Chess Player Should Know This Endgame !

If it is Black to move then Black is either mated or loses the Rook for example:
A)1... Kh6 2.Qf8 or B)1... Rg8 2)Qh5# or c)1... Rg1 2.Qe4+ Kg8 3.Qh8+ Kh7 4.Qa7+ wins the Rook.
If it is White to move ....How to proceed ?
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2 Must Known Endgames !

In The Second Endgame White Wins ...Thanks To The Black King Position....

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A Must Known Chess Endgame !

A Centurini Position is one where one of the two diagonals in front of the pawn is less than four squares in length.
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