After the game
Every blunder comes with an excuse.
Every excuse has the same fix: look first.
Blunders are one move deep.
When you look back at a blunder, it is almost never a deep combination. It's a knight fork you'd spot instantly in a puzzle, or a piece left hanging. You didn't miss it because it was hard. You missed it because you never looked.
That's good news. A problem of looking is fixed by a habit of looking — a short, fixed routine you run before every move until you no longer have to think about it.
The ten-second blunder check.
Three questions, always in the same order. They are the forcing moves — the ones your opponent can play that you are not free to ignore.
- Checks. Which checks can my opponent give?
- Captures. What can they take — and is it defended?
- Threats. What does their last move attack or prepare?
Run it on the position below. You are Black; White has just played 4.Ng5. Switch on each question in turn.
Now play it. The position is the same; find the defence.
Hope chessMove, then hope
- ✕Picks a move that looks good
- ✕Plays it straight away
- ✕Finds out on their next move
- ✕Blames the clock
Check chessLook, then move
- ✓Picks a candidate move
- ✓Asks: checks, captures, threats?
- ✓Plays it only if it survives
- ✓Saves time in the opening
What skipping the check costs.
Légal's Trap is more than 250 years old, and it still works — because it relies on a player who sees a free queen and doesn't run the check. Scroll through it.
The pin that isn't.
3…Bg4 pins the f3 knight to White's queen. It looks like the knight can't move. Pins to a queen, though, can be broken — if moving pays enough.
A slow move in a sharp position.
4…g6 prepares to develop the bishop. Black doesn't ask what White wants, and White's bishop is still staring at f7.
The knight leaves the pin.
5.Nxe5! offers the queen. This is the moment for the check: checks? Bxf7+ is one. Captures? f7, and the queen. Threats? Mate in two. Black should take the knight instead and accept losing a pawn.
Greed wins the queen…
5…Bxd1?? takes the queen. Black is a queen up — for one more move.
…and check starts the end.
6.Bxf7+ forces 6…Ke7, the king's only square.
Checkmate with three minor pieces.
7.Nd5#. Three minor pieces beat a queen, because one forcing move was never considered. Ten seconds at move five would have saved the game.
Train your eye for what's loose.
The blunder check is half the job; the other half is noticing what is undefended — yours and theirs. In each of these puzzles, your opponent moves first.
Habits that make it stick.
Five habits that make the check automatic.
Play slower games
15+10 or longer gives the check time to become routine. Then it survives in blitz.
Decide, then check
Pick your move, then run the check on that move before you play it.
Watch the clock
Blunders cluster in time trouble. Save time in the opening — that is what preparation is for.
Count defenders
For every attacked piece, count attackers and defenders. Equal or worse? Look again.
Know your blind spots
Everyone has a diagonal they miss. Your own games show you which.
Questions, answered.
Why do I keep blundering in chess?
Usually because you think only about your own plan and never ask what your opponent's last move threatens. Time pressure and tiredness make it worse. A fixed blunder check before every move addresses the habit directly.
What is a blunder check?
A short routine before you move: look for every check, capture and threat your opponent could play after your intended move. If one of them hurts you, find a different move.
How do I stop hanging pieces?
Before each move, look at every piece you have and ask whether it is defended and whether your move removes a defender. Then run the blunder check on your intended move.
Does playing slower reduce blunders?
Yes. Most blunders happen at faster time controls or in time trouble. Playing some longer games — 15+10 or slower — gives the blunder check time to become a habit you can then use at any speed.
How long does it take to stop blundering?
With a check before every move, most players see a clear drop within a few weeks. The habit feels slow at first and becomes automatic with repetition.
