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

Took 2 days to realize why this isn't a checkmate (opponent resigned bc they were also confused) : r/AnarchyChess

Stalemate is not logical to me - Chess Forums - Page 5

Boardgames Owen K.C. Stephens

Checkmates - Basics, Rules and Types of Popular Checkmates

According to the rules of chess, what happens when a player achieves checkmate but doesn't call it out? - Quora

Spent 5 minutes trying to figure out why this wasn't checkmate. Never figured it out and resigned. Another 10 minutes on the analysis screen and I figured it out. : r/chess

Susan Polgar on X: One of the most common questions I get is what are some of the basic chess rules every beginner/novice player must know. Here it is: My Easy to

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

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

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

What Is Checkmate?

For Stephen Weatherly, football is a game of chess

Check and checkmate