Chess on Tablet

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Lessons

Lesson No.009

ECO C88 Black wins Opening: Intermediate Medium game, 26 moves Opening: Ruy Lopez

Black
hgfe dcba
8765 4321
1234 5678
abcd efgh
White
Highlight Battle Situation White: beige / Black: khaki / Both: red / None: blue

Explanation

Game Moves

Show best moves
# White Best Black Best
1 e4 e4 e5 c5
2 Nf3 Nf3 Nc6 Nc6
3 Bb5 d4 a6 a6
4 Ba4 Ba4 Nf6 Nf6
5 O-O O-O Be7 Nxe4
6 Re1 Re1 b5 b5
7 Bb3 Bb3 d6 O-O
8 d4 c3 exd4 Nxd4
9 Bd5 a4 Qd7 Nxd5
10 b3 Nxd4 Nxd5 O-O
11 a4 exd5 Nc3 Nc3
12 e5 Nxc3 Nxd1 Nxd1
13 axb5 exd6 Nxe5 Nxe5
14 Nxe5 Nxd4 dxe5 dxe5
15 Bg5 Rxe5 f6 f6
16 b4 Rxd1 O-O O-O
17 bxa6 Bh6 Rxa6 Rxa6
18 Ra5 Rxa6 Bxb4 Rxa5
19 Bh6 Rxa6 Bxe1 Bxe1
20 Rxa6 Rxa6 Bxf2+ Bxf2+
21 Kh1 Kh1 Qb5 Bxa6
22 Nd2 Nd2 Qxa6 Qxa6
23 Bg5 h4 Ne3 Ne3
24 Bxe3 h4 Qa1+ Qa1+
25 Nb1 Nb1 Qxb1+ Qxb1+
26 Bc1 Bc1 Qxc1# Qxc1#

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.
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