Lesson No.006

ECO C02 Black wins Opening: Intermediate Medium game, 42 moves Opening: French Defense

Black

hgfe dcba

8765 4321

1234 5678

abcd efgh

White

Explanation

Game Moves

Show best moves

#	White	Best	Black	Best
1	e4	e4	e6	c5
2	d4	d4	d5	d5
3	e5	Nc3	c5	c5
4	c3	c3	Nc6	Nc6
5	Nf3	Nf3	Qb6	Bd7
6	a3	a3	c4	c4
7	Be2	Nbd2	Bd7	Na5
8	h3	Nbd2	f6	Na5
9	a4	Nbd2	fxe5	fxe5
10	b3	Nxe5	e4	cxb3
11	Nfd2	Nfd2	cxb3	cxb3
12	Nxb3	Nxb3	Qc7	Qc7
13	O-O	O-O	Bd6	Nf6
14	Nc5	c4	Nge7	Nf6
15	Nxd7	Nxd7	Qxd7	Qxd7
16	f3	f3	exf3	exf3
17	Bxf3	Rxf3	O-O	O-O
18	Qe1	Nd2	Bc7	Bc7
19	Ba3	Ba3	Rf6	Rf7
20	Nd2	Nd2	Re8	Nf5
21	Bh5	Bh5	Rxf1+	Rxf1+
22	Nxf1	Nxf1	Rf8	g6
23	Rb1	Rb1	Nd8	b6
24	Ne3	Nh2	Ndc6	Bd6
25	Bg4	Qe2	Kh8	Rf6
26	Rxb7	c4	Bh2+	Bh2+
27	Kh1	Kxh2	Qxb7	Qxb7
28	Kxh2	Kxh2	Qb8+	Qc7+
29	Bd6	Kg1	Qxd6+	Qxd6+
30	Kh1	Kh1	Ng6	e5
31	Bd1	Kg1	e5	Qf4
32	Bc2	dxe5	e4	e4
33	g4	Bb3	Nxd4	Nxd4
34	cxd4	cxd4	Rf3	Qa3
35	Qf1	Nf1	Nh4	Rxf1+
36	g5	Bd3	Rxf1+	Rxf1+
37	Nxf1	Nxf1	Qa3	Qf4
38	Bd3	Kg1	Qxd3	Qxd3
39	Kh2	Kg1	Qxf1	Qxf1
40	Kg3	Kg3	Nf5+	Nf5+
41	Kh2	Kh2	Qf2+	Qf2+
42	Kh1	Kh1	Ng3#	Ng3#

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.