GM
Parker, Jonathan F
ENG·Born 1976·FIDE #400580·577 Games
ENG Classical2499553 Games
Rapid246817 Games
Blitz25007 Games
Statistics
577
Total
205
Wins
270
Draws
102
Losses
36%47%18%
Play Style
What you need to know before facing them
Very high accuracy: 87.6% average
Plays 13.7% better with black
Inconsistent (50%): Can have off days
Very precise: only 0.3 blunders/game
Dominates 1.e4 ♔ (68% in 11 games)
Deep Analysis
Stockfish 18 · Classical games · 8 analyzed
Accuracy by phase
Opening96.6%
Middlegame89.8%
Endgame94.2%
Clutch Factor
Performance under pressure
Winning (+2 or more)97%
1 Games
Equal position94%
5 Games
Losing (-2 or more)66%
2 Games
Problematic Pieces
Which pieces cause most errors?
♗
25%
2 errors
♕
25%
2 errors
♖
25%
2 errors
♔
12%
1 errors
♙
12%
1 errors
♞
0%
0 errors
Critical Moment
When does the first serious error occur?
Move 41average
1-15
16-25
26-35
36-45
46+
100% of blunders occur between move 36-45. Keep tension until that moment.
Error Heatmap
Where do most errors occur?
1
1
1
1
1
1
1
1
abcdefgh
Many
Few
Critical squares
b21 err
c21 err
c31 err
c71 err
d41 err
b2/c2 concentrate most errors. Force decisions in those zones.
Recent Games
D
Ansell, Simon T2303
Round 8: Ansell, Simon T ... · 22 Mar 2026
L
Jackson, James P2373
Round 7: Parker, Jonathan... · 21 Mar 2026
L
Maroroa Jones, Gawain C B2645
Round 6: Maroroa Jones, G... · 8 Feb 2026
D
O`Gorman, Tom2391
Round 5: Parker, Jonathan... · 7 Feb 2026
W
Siva Mahadevan2431
Round 4: Siva Mahadevan -... · 11 Jan 2026
L
Hebden, Mark L2362
Round 3: Parker, Jonathan... · 10 Jan 2026
Openings
Based on player games
No clear weaknesses!
Critical Blunders
Tactical errors analyzed with Stockfish
6 errors
▶
#38Kb7??
Tacticsvs Efroimski
Blitz·2024
▶
#30Nxg8??
Tacticsvs Hong
Blitz·2024
▶
#24Nf3??
Tacticsvs Adams
Blitz·2024
▶
#24f5??
Tacticsvs Ghasi
Blitz·2024
▶
#19Bxb3??
Tacticsvs Vachier-Lagrave
Blitz·2024
▶
#43Rd4??
Endgamevs Topalov
OTB
Endgame Statistics
9 endgame categories analyzed — discover where they collapse under pressure
Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO2026
2025
2024
2021
2020
2018
PRO
8
76
5
4
3
2
1a
b
c
d
efgh296 Games
42%41%17%
1.d4
63%261
1.Nf3
68%14
1.e4
68%11
1.f4
63%4
1.c4
38%4
1.g3
100%2