Lesson No.007

ECO A48 White wins Opening: Beginner Medium game, 34 moves Opening: London System

Black

hgfe dcba

8765 4321

1234 5678

abcd efgh

White

Explanation

Game Moves

Show best moves

#	White	Best	Black	Best
1	d4	e4	Nf6	d5
2	Nf3	c4	g6	d5
3	Bf4	c4	Bg7	Bg7
4	e3	Nc3	c5	d6
5	c3	Nc3	O-O	Qb6
6	dxc5	Nbd2	a5	a5
7	Nbd2	Nbd2	Na6	Na6
8	Bxa6	Bxa6	Rxa6	Rxa6
9	Nc4	e4	Ne4	b5
10	Be5	Qd5	Bxe5	Bxe5
11	Nfxe5	Ncxe5	d5	Nxc5
12	Nb6	cxd6	Be6	Nxc5
13	Nd3	O-O	Qc7	Qc7
14	Nf4	Nf4	Qxc5	Qxc5
15	Nxe6	Nxe6	fxe6	Qxb6
16	Nd7	Nd7	Qa7	Qb5
17	Nxf8	Nxf8	Rc6	Kxf8
18	Nd7	Nxe6	b5	a4
19	Ne5	Ne5	Rc5	Rc8
20	Nd3	Qg4	Rc8	Rc4
21	Rc1	O-O	b4	b4
22	Qg4	cxb4	Qa6	Qa6
23	O-O	O-O	bxc3	bxc3
24	bxc3	bxc3	Nxc3	a4
25	Rxc3	Rxc3	Re8	Rxc3
26	Ne5	Nc5	Ra8	Qd6
27	Rc6	Rc6	Qc4	Qb7
28	Rxc4	Qxe6+	dxc4	dxc4
29	Qxe6+	Qxc4	Kh8	Kh8
30	h4	Nxc4	g5	c3
31	Qxe7	Nf7+	Rd8	gxh4
32	Nf7+	Qxd8+	Kg7	Kg8
33	Nh6+	Nh6+	Kh8	Kh8
34	Qf6#	Qf6#

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.