The first position is a checkmate by the bishop, with the king in the corner.
From the en.wikipedia.org
The most common orthodox chess puzzle takes the form of checkmate in n moves.
From the en.wikipedia.org
Also, the checkmate can be forced only in a corner that the bishop controls.
From the en.wikipedia.org
Problems are also specifically about how one side, usually White, achieves checkmate.
From the nytimes.com
Checkmate seemed inevitable, but no one was sure when or how it would come.
From the time.com
In these cases the player cannot avoid the loss of a piece or checkmate, respectively.
From the en.wikipedia.org
With optimal play by both sides, checkmate in this position requires seventeen moves.
From the en.wikipedia.org
If they shoot for 2-3% inflation and their interest rates move by 1-2%, that's checkmate.
From the economist.com
It's worth pointing out that, in debate settings, this was a classic rhetorical checkmate.
From the economist.com
More examples
Complete victory
Place an opponent's king under an attack from which it cannot escape and thus ending the game; "Kasparov checkmated his opponent after only a few moves"
A chess move constituting an inescapable and indefensible attack on the opponent's king
Checkmate (frequently shortened to mate) is a situation in chess (and in other boardgames of the chaturanga family) in which one player's king is threatened with capture (in check) and there is no way to meet that threat. ...
Checkmate is the fourth studio album by rapper B.G. released on Cash Money Records. It was his last release with the label. All production was done by producer Mannie Fresh. It features guest appearances from the Hot Boys, & the Big Tymers. ...
Checkmate is a one act ballet created by the choreographer Ninette de Valois and composer Arthur Bliss. The idea for the ballet was proposed by Bliss, and subsequently produced by de Valois for the Vic-Wells Ballet. ...
The 11th season of the Australian police-drama Blue Heelers premiered on the Seven Network on 4 February 2004 and aired on Wednesday nights at 8:30 PM. The 39-episode season concluded 5 November 2004.
Checkmate is a fictional covert operations agency within the DC Comics universe. It first appeared in Action Comics #598 and proceeded to have its own ongoing title in Checkmate! (vol. 1). ...
Petals Around the Rose is a lateral thinking mind game traditionally played with five dice.