In chess, if you say checkmate and your opponent isn't checkmated

14 Ways to End a Chess Game - wikiHow

What will happen if neither player has a theoretical possibility to checkmate the opponent? - Quora

Your Life Is Tetris. Stop Playing It Like Chess., by Tor Bair, Mission.org

In chess, if you say checkmate and your opponent isn't checkmated, do you lose? - Quora

Can someone explain to me why this isn't checkmate? : r/AnarchyChess

I checkmated my opponent so he decided to checkmate me too. Is this normal ? : r/AnarchyChess

What Is Checkmate?

That kid is 7 just trying to learn bro 🤣 #chess #hikaru #bully #grand

In chess, if you say checkmate and your opponent isn't checkmated, do you lose? - Quora

My opponent checkmated me, but the game didn't end for some reason. Had to resign! : r/AnarchyChess

K+N vs K+N: Only drawn on Chesscom? - Chess Forums

So i was playing in Chess.com. How is this not a checkmate from white? (Im playing white and still a beginner) I don't know I didn't win with checkmate. Can someone explain?

I do not understand stalemate, please explain - Chess Forums

Do You Have To Say Checkmate In Chess?

The Scholar's Mate — Art of Manifestation, by tania el.