A double check is when two of your pieces are checking your opponent at the same time. The only way for him to escape check is to move his King, because capturing either checking piece would still expose the King to check by the other attacking piece. Blocking the check is also inadaquate, fort he same reason: Here, Black played Bxd3+
Do you see what that does? It looks like Black
can just take the marauding Bishop...but he can’t! Black is in check from the
Bishop and the Rook! His only option is
to move his King, and there is only one square to move it to. So he plays Kg1.
Now, he does Black bring it home? He plays Rf1#, checkmate! What a whopper! Of course, White can’t take the Rook with
King, because the Bishop is defending it.
At the beginning, Black was down a Queen and Pawn for a Bishop, a 7
point difference. And now, he has White
mated! He couldn’t have doen it without
the help of a double check.
Click on the small photo below to display all three boards and text in one 'photo'.
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