What is the most stupid thing you ever done in chess?

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Bro12Bob
You could do much stupid things in chess. What is your most stupid thing in chess?❓
Reputationlover

Botez gambit

RogerHolly
Sell all my books and quit playing for twenty years.
sneaky-Alfa-Romeo
Blunder mate
Toldsted

Moved the king when I could just take the piece that checked me.

number-5erin

Trying the bongcloud opening

ChessUnderFire

I started playing chess ;-)

SacrifycedStoat
Queen blunder
rajeshkpy27
I had two queen but got back rank checkmated by his lone rook!
beedish

Closing my phone when i was playing and forgot that i was playing chess

ThrillerFan

Resigned a winning position. No joke, this really happened.

I resigned in this position. 22...Qg6+ wins outright as now e8 is covered and on the next move, I take the Queen.

But no, I went 22...1-0?? - yes, the BLUNDER WAS RESIGNING!

Bkbest99

Underestimating my opponent

ChessEnthusiast48
When I was new to the game, I did not know the rules against invalid castling and castled on a square under check by my opponent’s piece. He immediately called my attention.
flips-board

I lost and threw my phone against the wall, which shattered it. I bought a replacement for $150 a few days later and will take better care of it 🤠

prashantsrikanth

I found a line to trade queens, then forgot to play my move!

cheswizard34
I started a game while I was getting new internet installed and lost by abondment
BEAenALEX

Sacrificed my Queen thinking it was a checkmate until I realized she could it it with rook 😭

Bro12Bob
I did 10 blunders in one game!!
Verwarr

Trying to emulate tal playstyle.

mikewier

Travelled halfway across the country to play in a tournament, stayed up all night playing cards, overslept, and missed the morning round.