Lesson No.014

ECO C43 White wins Opening: Intermediate Short game, 16 moves Opening: Petrov's Defense

Black
hgfe dcba
8765 4321
1234 5678
abcd efgh
White

Explanation

Game Moves

Show best moves
# White Best Black Best
1 e4 e4 e5 e5
2 Nf3 Nf3 Nf6 Nf6
3 d4 Nxe5 exd4 d5
4 e5 e5 Ne4 Ne4
5 Qxd4 Qxd4 f5 d5
6 exf6 exf6 Bd6 Nxf6
7 Qxe4+ Qxe4+ Qe7 Be7
8 fxe7 fxe7 a6 Nc6
9 Bd3 Bd3 Bc5 Nc6
10 Qg4 Nc3 Bd4 Bxe7
11 Qxd4 Nxd4 a5 Rg8
12 Qxg7 Qxg7 Na6 Nc6
13 Bg5 Bg5 d5 d5
14 Qxh8+ Qxh8+ Kd7 Kd7
15 e8=Q+ e8=Q+ Kd6 Kd6
16 Qhf8# Qhf8#

Detailed Analysis

Evaluation Chart

Evaluation: How good the position is, in pawns (1 pawn = 1.0). + (blue) means you are better, − (red) means your opponent is. Capped at ±10. Touch a point to see the actual value.
◆ Mate: A position with checkmate in sight (shown at ±10). Touch a point to see the moves to checkmate (M3: you mate in 3, -M3: your opponent mates in 3).

Skill Radar

Estimated from engine evaluations. It may not match your actual strength.

How Scores Work: For each move, the winning chance (calculated from the evaluation) before and after the move is compared; the less it drops, the higher the move's accuracy. Each item is the average accuracy of its moves (out of 100). Items with fewer than 3 moves show (-) (Tactics is scored from a single move).
Opening Moves 1 to 10
Tactics Moves right after the opponent dropped their winning chance by 10% or more (did you take the chance?)
Strategy Moves other than Opening, Endgame and Tactics
Endgame Moves once both sides together have 8 or fewer pieces other than kings and pawns
Consistency Share of all moves that did not drop the winning chance by 10% or more

* The win % and accuracy formulas are based on Lichess's calculations.

Win % and Accuracy

Win %: Your chance of winning (0–100), calculated from the evaluation after each move.
Accuracy: For each of your moves, a score (0–100) comparing your winning chance before and after the move. A move that keeps your winning chance scores 100.

Evaluation Chart

Evaluation: How good the position is, in pawns (1 pawn = 1.0). + (blue) means you are better, − (red) means your opponent is. Capped at ±10. Touch a point to see the actual value.
◆ Mate: A position with checkmate in sight (shown at ±10). Touch a point to see the moves to checkmate (M3: you mate in 3, -M3: your opponent mates in 3).

Skill Radar

Estimated from engine evaluations. It may not match your actual strength.

How Scores Work: For each move, the winning chance (calculated from the evaluation) before and after the move is compared; the less it drops, the higher the move's accuracy. Each item is the average accuracy of its moves (out of 100). Items with fewer than 3 moves show (-) (Tactics is scored from a single move).
Opening Moves 1 to 10
Tactics Moves right after the opponent dropped their winning chance by 10% or more (did you take the chance?)
Strategy Moves other than Opening, Endgame and Tactics
Endgame Moves once both sides together have 8 or fewer pieces other than kings and pawns
Consistency Share of all moves that did not drop the winning chance by 10% or more

* The win % and accuracy formulas are based on Lichess's calculations.

Win % and Accuracy

Win %: Your chance of winning (0–100), calculated from the evaluation after each move.
Accuracy: For each of your moves, a score (0–100) comparing your winning chance before and after the move. A move that keeps your winning chance scores 100.

Press Close to go to the game analysis page.