Scouting report: Jonathan F Parker (GM, ENG)

565 over-the-board games in the Chess Stalker database (545 classical, 13 rapid, 7 blitz): 36% wins, 46% draws, 18% losses. FIDE rating 2498 standard, 2468 rapid, 2500 blitz. 13 games analyzed with Stockfish: 90% accuracy, 0.15 blunders per game.

  • Opening repertoire of Jonathan F Parker as White and Black, with results per line — free.
  • Weaknesses and blunder patterns, evaluated with Stockfish — free.
  • Recent over-the-board games and endgame statistics.
  • Twin Bot: a sparring bot that imitates Jonathan F Parker's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/400580 — no account needed.

Chess Stalker

Jonathan F Parker

GM

United Kingdomborn 1976FIDE ID 400580

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2440
2480
2520
2560
2530 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2500
2498
2468
2570peak, Jul 2002
565games
204wins, 36%
262draws, 46%
99losses, 18%

Play style

before facing them
Elite accuracy: 90.4% average
Plays 8.4% better with black
Inconsistent (60%): Can have off days
Very precise: only 0.1 blunders/game
Dominates 1.d4 as ♔ (63% in 254 games)

Play against Parker's Twin

Their real openings, level & style

Based on 565 games

Openings

565 games

Weaknesses

where they slip as ♔ White

No significant weaknesses detected as white

Strengths

what holds up for them as ♔ White
Benoni1.d4 ♞f6 2.c4 c514 games, last played 11 months ago64.3%wins

Deep analysis

Stockfish · Classical · 13 analyzed
Accuracy by phase
Opening
96.6%
Middlegame
91.5%
Endgame
94.2%
Clutch factor
+30%
Winning (+2)
96%
Equal
95%
Losing (−2)
66%
Problematic pieces
25%
2 err
25%
2 err
25%
2 err
12%
1 err
12%
1 err
0%
0 err
Critical moment
Move 41 avg
0%
1-15
0%
16-25
0%
26-35
100%
36-45
0%
46+
100% of blunders occur after move 36-45. Keep tension until then.
Error heatmap · Critical squares
1
1
1
1
1
1
1
1
Few
Many
b2
1
c2
1
c3
1
c7
1
d4
1
b2/c2 concentrate most errors. Force decisions in those zones.

Critical blunders

8 errors
#53
♚f1?? vs Yatskar
Endgame · Rapid · 2025
#29
♜d7?? vs Makaraci
Endgame · Rapid · 2025
#24
f5?? vs Ghasi
Middlegame · Blitz · 2024
#19
♝xb3?? vs Vachier-Lagrave
Middlegame · Blitz · 2024
#30
♞xg8?? vs Hong
Middlegame · Blitz · 2024
#38
♚b7?? vs Efroimski
Endgame · Blitz · 2024

Recent games

Kovchan, Alexander(2445)

4NCL 2025-26 · 4 May 2026

½–½
Ansell, Simon T(2303)

Round 8: Ansell, Simon T ... · 22 Mar 2026

½–½
Jackson, James P(2373)

Round 7: Parker, Jonathan... · 21 Mar 2026

0–1
Maroroa Jones, Gawain C B(2645)

Round 6: Maroroa Jones, G... · 8 Feb 2026

0–1
O`Gorman, Tom(2391)

Round 5: Parker, Jonathan... · 7 Feb 2026

½–½
Siva Mahadevan(2431)

Round 4: Siva Mahadevan -... · 11 Jan 2026

1–0

Endgame statistics

Repertoire

PRO
565 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
291 games43%W41%D16%L
Move
1. d4
2544m
43%41%16
63%
1. ♞f3
146m
43%50%
68%
1. e4
1316y
46%38%16
65%
1. f4
421y
25%75%
63%
1. c4
4Nov 2000
25%25%50%
38%
1. g3
2Aug 1995
100%
100%

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