Avatar of Mark Machin Rivera

Mark Machin Rivera IM

SerMarkPR Since 2013 (Active) Chess.com ♟♟♟♟♟♟
46.8%- 48.1%- 5.1%
Bullet 2525
13831W 14242L 1463D
Blitz 2650
924W 920L 135D
Rapid 2367
27W 14L 7D
Coach Chesswick's Profile Photo
Coach Chesswick

Mark, here’s a tailored performance review and improvement plan

Overall Trend:

MonTueWedThuFriSatSun100%0%Day of Week
  Peak so far: 2601 (2025-02-06)

1. What you are already doing well

  • Active, flexible openings. Your preference for hyper-modern lines (Reti/English setups, Saragossa & Modern Defence) keeps positions fluid and often sidesteps heavy theory.
  • Tactical alertness. Recent wins show you spotting intermediate moves such as 21.Nb6+ and converting minor-piece activity into material (see diagram 20-25 in the first PGN below).
  • Piece co-ordination in the middlegame. You regularly double rooks on open files and swing them to the 7th rank (e.g. …Rd8–d4–g4 manoeuvres), creating multiple threats.

2. Key areas to address

  • Time management. Four of your last five losses were on time despite playable positions. Getting flagged at move 30-40 is costing 30-40 rating points a session.
  • Modern Defence under pressure. In multiple losses with …g6 you fell behind after early e4–e5/d4–d5 breaks. Opponents exploited the diagonal a2-g8 and the weak dark squares.
  • Conversion technique. When clearly better you sometimes “go hunting” instead of simplifying; positions vs trollingg and Fronk98 were still winning but the clock beat you.
  • Early king safety as Black. Games against 1.e4 where you delayed …Nf6/…e5 showed your king drifting on e8/g8 with loose pawns (see loss to rudolfjun2005).

3. Three focus drills for the next 30 days

  1. Clock discipline drill (15 minutes, daily)
    • Play one 10 + 5 game, forbid yourself to drop below 2:00 on the clock before move 25.
    • The moment you hit 2:00, switch to “simple moves only” (exchange, check, capture, threat).
    • Goal: automatic time awareness.
  2. Anti-Modern mini-repertoire (2 hours total)
    • Prepare a solid backup against 1.e4 (e.g. Caro-Kann line with …c6/d5) and against 1.d4 (simple Queen’s Gambit Declined setup).
    • Idea: vary your Black choices to avoid opponents steering into your weakest structure.
  3. Endgame flashcards (10 positions, weekly)
    • Rook + 3 vs 3, R+P vs R, and basic opposite-coloured bishop endings.
    • Solve each from both sides under 3-minute limit; keeps calculation sharp for time scrambles.

4. In-game checkpoints

Move 1-10Is my king one move from safety?
Have I used >25 % of my clock?
Move 11-20What is my opponent’s worst piece? Make it worse.
Move 21-30If ahead materially, trade one pair of pieces; if not, increase tension.
Move 31+Switch to “two-move look-ahead” mode; avoid flashy moves under 15 s.

5. Illustrative moments

• Winning conversion with precise checks – see 20…O-O-O – 29.Nxd8 from your victory vs ChipanaK:




• Time-pressure collapse after a solid opening – crucial phase vs trollingg:

6. Quick tips for your very next session

  • Play two warm-up puzzles before clicking “Play”.
  • Add an increment (3 + 2 or 5 + 3) until flag losses drop below 10 % of games.
  • Versus 1.e4 as Black: test one classical defence this week, record the first ten games, and review with engine.

Keep enjoying the creative positions you generate, Mark. With firmer time control habits and a sturdier backup opening, 2600 blitz is within reach.

– Coach


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