Created by potrace 1.16, written by Peter Selinger 2001-2019

← chesspieler / Openings

Playing White · 90 blitz games · 56W 27L 7D · You choose this

London System

Your best opening: average start, strong finish, 66% score.

Score66%+17% vs your average
Win chance after move 1250%−2% vs your average
Blunders per game1.01−0.21 vs your average
Clock left at move 102:48+9s vs your average
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Your most common line

1. d4 d5 2. Bf4 Nf6

What it says about you

The classic London (1.d4 d5 2.Bf4 Nf6) is your comfort zone, and it shows. You know the setup well enough to play it on autopilot and put your energy into the middlegame. That is exactly what the London is designed to do.

How you play it

Your win chance is only 50.3 at move 12 and 51.9 at move 20, below your baselines, but you score 66.1% and 75.0% over the last 6 games. So you are outplaying people in the middlegame, not in the opening. You are quick (167.9s at move 10) and cleaner than usual (1.01 blunders per game). Your conversion is the best in your repertoire at 52 of 69 winning positions (75%). The main line scores 64.5% and the ...O-O line 85.7% over 7 games.

Last 90 days: 6 games, 75% score.

What you're missing

  1. 01

    Hung pieces are still your top loss cause (8 of 27 losses). At move 43 you played Nf6+ instead of Kf2 and hung a knight, dropping from 78 to 29 with 17s left.

  2. 02

    At move 19 you played Qg3 instead of Nxc6 with 151.9s on the clock and went from 57 to 12. That was not time pressure; you missed a capture.

  3. 03

    At move 22 you played Qd1 instead of Rxe8 and allowed mate (26 to 0). Back-rank and file checks are costing you.

  4. 04

    Your move-12 win chance (50.3) is below your baseline, so the opening is giving you nothing extra. Your middlegame is doing all the work.

How to improve it

  1. 01

    The standard plan is e3, c3, Bd3, Nbd2, Ngf3, then Ne5 with Qf3 or h4 for a kingside attack. Keep to that order and you will get similar positions every game.

  2. 02

    Against ...c5 and ...Qb6, play Qb3 or Qc1 and do not be tempted into gambiting b2 in blitz. Learning one answer is enough.

  3. 03

    If Black plays ...Bd6 to trade your Bf4, consider Bg3. It keeps your bishop and gives Black a decision to make.

  4. 04

    Checks before captures before threats: your Nf6+ and Qg3 misses both came from not looking at forcing alternatives.

Where it goes wrong

Your losses in this opening, by where and how the decisive mistake happened.

Phase of the decisive mistake

opening3n=3
middlegame17n=17
endgame4n=4

What the mistake was

Hung a piece (left it undefended)8n=8
Missed a tactic / only move6n=6
Big positional error (no simple tactic)4n=4
Lost on time in a playable position3n=3
Allowed a mating attack2n=2

Variations you reach

Main line8364%
O O786%

Winning positions converted here: 75% (52 of 69).

Recent mistakes in this opening

Your move in red, Stockfish's in black.

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Allowed mate · 0:57 left
22. Qd1? Best was Rxe8. 26% → 0%
vs pro-hu (1507) · 06-09-26 →
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Missed a tactic · 2:32 left
19. Qg3? Best was Nxc6. 57% → 12%
vs LSVualnam (1449) · 15-06-26 →
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Positional error · 2:02 left
27. Qg6? Best was f4. 68% → 37%
vs LSVualnam (1449) · 15-06-26 →
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Hung a piece · 0:17 left
43. Nf6+? Best was Kf2. 78% → 29%
vs LSVualnam (1449) · 15-06-26 →

Next steps

01

Play the London more often

You score 66.1% here against 52.6% in the Accelerated London. Look at whether you can steer more games into this move order with 2.Nf3 or 2.Bf4 Nf6.

02

Improve your move-12 position

Learn the Ne5 plus Qf3 attack properly. Your opening edge is below baseline, and there is free improvement available.

03

Check back-rank safety

Before moving your queen off the back rank, look at every rook check. Qd1 allowing mate was a one-move oversight.