Chess Position
Position: What should White play?
Kg2
3r4/8/2R3N1/3B1pkp/5p2/P7/5P1P/7K w - -
8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
0
games in database
52%
28%
20%
⚪ White
½ Draw
⚫ Black
♟
Engine Evaluation
+13.03 d20
Kg2played by
👤
Humans
0%
🧠
Maia AI
0%
♟
Stockfish
#1
FEN
3r4/8/2R3N1/3B1pkp/5p2/P7/5P1P/7K w - - 0 1💡
Why 
f3 ?❌ f3?? — blunder
EVAL:
[████████░░]+8.77+13.03 → +8.77 (Loss: -4.26)
💡 Problem with f3:
By moving the d5 to f3, White voluntarily blocks their own 
f2 and allows Black to activate the 
d8. It misses the immediate king safety provided by the engine's top choice.
⚖️ Comparison
| Coup | Eval | Rule | Verdict |
|---|---|---|---|
| ✅ g2! | +13.03 | ✓ King Activity | Steps out of the back rank and prepares to neutralize the f4. |
| ❌ f3?? | +8.77 | ✗ Piece Coordination | Blocks the f-pawn and slows down the mating net. |
⚡ Opponent's Punishment
After f3:
- → e8 Black seizes the open file and targets the
g6. - → White loses: Significant tempo and the crushing pressure on the kingside.
📚 Lesson: In the endgame, do not block your own passed pawns or restrict your King's mobility with your own pieces.
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