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Player Profile

Alexander Costello IM

Larax San Diego Since 2011 (Inactive) Chess.com ♟♟♟
54.4% W 39.1% L 6.5% D
Bullet
2749
3116W 2156L 329D
Blitz
2791
4574W 3381L 595D
Rapid
2531
303W 192L 36D
Daily
1846
16W 33L 1D

Hi Alexander!

You are sitting very close to a personal best (only a few points under 2794 (2025-03-23)) and have shown you can beat 2700-rated opposition at will. Below is a short roadmap for pushing through the next ceiling.

What already works

  • Active play & calculation. In the QGA win over carlocapau you uncorked 18…Qxf2+ and never looked back – a nice illustration of concrete thinking in sharp positions.
  • Conversion technique. When you reach an end-game edge (e.g. vs Mattechecetmatt) you keep the squeeze on, even with little time left.
  • Clock awareness. You usually stay up on the clock until the late middle-game – essential in 3-minute chess.

Growth areas

  1. Smoother development vs system openings.
    In the loss to GulamaliRises (London) two early pawn moves – …f6 and …b6 – weakened dark squares and delayed castling. Aim for a “minor-piece trio before flank pawns” rule of thumb. A simple antidote is:
    …d5 …Nf6 …Bf5 …e6 0-0 before you look at …c5/…c6/…f6.
  2. Tempo economy with the knights.
    In the Caro-Kann Advance (White vs ShazilTheGOAT2006) your knight wandered Na3-c2-e3-g2 while Black gained space. Before making a second knight move ask: Does this create a direct threat or improve a critical square? CriticalSquare
  3. Recognising central pawn breaks.
    A number of losses start with the opponent seizing the centre (…c5/…e5). Add one daily exercise where you pause and list all legal pawn breaks for both sides; it will train automatic awareness of those moments.
  4. Time allocation in won endings.
    Many of your wins end with <10 s on the clock. Reviewing the basic K+P, rook, and queen endings will let you blitz them out and save time for earlier critical positions.

Opening focus for the next week

As Black vs London: play 10 training games with the scheme …d5 …Nf6 …c5 …Nc6, castle, then break with …e5.
As White vs Caro-Kann: study the Short Variation model game “Karpov – Miles, Skellefteå 1985” and try h4-h5 before relocating your knight.

Mini-quiz (next study session)

  1. After 14…Nxd4 in the London game, what simple reply equalises for Black?
  2. Why is …f6 rarely sound before castling in Queen’s-pawn structures?
  3. Calculate the cleanest continuation for Black from this position (taken from your QGA win):

Monitor your trend

Check when you play your sharpest chess –

Win Rate by Hour100%75%25%0%50%0:00 - 54.0%1:00 - 54.0%2:00 - 55.9%3:00 - 52.6%4:00 - 54.9%5:00 - 55.9%6:00 - 56.2%7:00 - 60.6%8:00 - 52.0%9:00 - 48.7%10:00 - 47.6%11:00 - 51.7%12:00 - 53.9%13:00 - 38.9%14:00 - 49.3%15:00 - 50.4%16:00 - 57.5%17:00 - 54.5%18:00 - 53.3%19:00 - 54.6%20:00 - 54.5%21:00 - 52.8%22:00 - 55.1%23:00 - 54.7%01234567891011121314151617181920212223Hour of Day (UTC)
– and which day tends to be your streak day –
Win Rate by Day100%75%25%0%50%Monday - 55.0%Tuesday - 55.2%Wednesday - 52.8%Thursday - 53.8%Friday - 53.7%Saturday - 55.1%Sunday - 54.7%MonTueWedThuFriSatSunDay of Week
. Small scheduling tweaks can add free rating points.

Keep up the great work, Alexander. One slow accurate move is worth three bullet-speed blunders – and you are only a handful of those away from the next milestone!