Position
You developed actively, but the center defender is pinned.
r1bqkbnr/pppp1ppp/2n5/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 2 3Sample Analysis
See what WhyThisMove shows after one mistake.
This is a clearly marked demo, not a real user report. It shows the kind of coaching explanation a new player sees after importing a game.
Demo position for product explanation. Create an account and start with 100 free credits.Choose Plus, Pro, or Max. AI Coach, deep analysis, and Battle use credits.
What the coach explains
Why it failed
Bc4 looks natural, but it leaves the e4 pawn tactically vulnerable. Because the knight is pinned, ...Nxe4 becomes hard to answer.
The human idea
The problem is not only the pawn. It is the timing: you started development before removing the pin that holds your center together.
Lesson
Before playing an active move, ask whether a pinned piece is still defending something important.
Every recommendation comes from four perspectives.
The goal is to keep engine accuracy while making the lesson understandable.
Engine truth
Objective best move, evaluation, and tactical refutation.
Human data
What players at your level usually choose in real games.
Psychology
Which natural-looking mistake tends to repeat.
Coach explanation
A plain-language lesson you can use next game.
What the coach explains
- Why it failed
- The move allows ...Nxe4 because your knight is pinned and the center defender cannot recapture safely.
- Better move
- Re1 breaks the pin first and prepares d4.
- Lesson
- Before attacking, ask which piece is pinned and which center pawn is loose.
- Credits
- Choose Plus, Pro, or Max. AI Coach, deep analysis, and Battle use credits.
Try it on your own game.
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