Isn’t this checkmate?

What about it?

The puzzle today, I thought would end with this move.

There's some mating pattern in here. White to move

Hardest 2900 puzzle

why is moving the rook the best move here? is the engine blind?

The League awards from Chess.com really got me going, but I think they'll be done after this, right?

Oh the irony…

Absolute unit of a bunny

Soviet water polo player Petre Kako Mshvenieradze

Absolute unit of a massive kangaroo

Absolute unit of a zucchini (zucchini for size)

Check out this absolute unit of a rogue arm hair!