GM

Ruiz Castillo, Joshua Daniel

COL COL·Born 1997·FIDE #4400704·1,661 Games

Classical24721,527 Games
Rapid246556 Games
Blitz249178 Games

Statistics

1661

Total

868

Wins

381

Draws

412

Losses

52%23%25%

Play Style

What you need to know before facing them

Elite accuracy: 93.2% average
High resilience (62%): Dangerous even when losing
Solid conversion: 92%
Very consistent (86%)
Very precise: only 0.0 blunders/game
Dominates 1.d4 ♔ (74% in 29 games)

Deep Analysis

Stockfish 18 · Classical games · 290 analyzed

Accuracy by phase
Opening95.8%
Middlegame93.2%
Endgame95.5%

Clutch Factor

Performance under pressure

+5%
Winning (+2 or more)94%
146 Games
Equal position94%
93 Games
Losing (-2 or more)89%
51 Games

Problematic Pieces

Which pieces cause most errors?

♖
23%
57 errors
♙
19%
45 errors
♕
18%
44 errors
♞
17%
42 errors
♔
14%
35 errors
♗
8%
20 errors

Critical Moment

When does the first serious error occur?

Move 44average
1-15
16-25
26-35
36-45
46+
45% of blunders occur between move 26-35. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

8
7
8
6
7
9
9
14
9
6
abcdefgh
Many
Few
Critical squares
g414 err
e49 err
f39 err
f49 err
c78 err
g4/e4 concentrate most errors. Force decisions in those zones.

Recent Games

L
Cori, Jorge2606

Round 9: Cori, Jorge - Ru... · 20 Dec 2025

1-0
D
Perez Gormaz, Matias2308

Round 8: Perez Gormaz, Ma... · 20 Dec 2025

½-½
W
Gutierrez Delgado, Yusuan A.2237

Round 4: Gutierrez Delgad... · 20 Dec 2025

0-1
W
Diaz Rosas, Julio Cesar2292

Round 5: Ruiz Castillo, J... · 20 Dec 2025

1-0
W
Gomez Arnau, Reinerio2137

Round 7: Ruiz Castillo, J... · 20 Dec 2025

1-0
W
Gomez Arnau, Reinerio2013

XXXV Torneo Internacional... · 19 Dec 2025

1-0

Openings

Based on player games

Weaknesses

EXPLOIT!
White

No significant weaknesses detected as White

Black
Nimzo-Indian: Classical
83.3%
12 Games·Loses

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2

Strengths

AVOID
White
Scotch: Classical
71.4%
14 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5

Ruy Lopez: Morphy
66.1%
62 Games·Wins

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6

Black
Sicilian: d6 Systems
56.8%
185 Games·Wins

1.e4 c5 2.Nf3 d6

Sicilian: e6 Systems
61.5%
13 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors
▶
#76Kc7??
Endgame
vs Gonzalez Zamora
OTB·2025
▶
#51Rb7??
Endgame
vs Matviishen
OTB·2025
▶
#87Ka5??
Endgame
vs Hidalgo Diaz
OTB·2025
▶
#29Bf4??
Tactics
vs Qin
OTB·2025
▶
#42Bg8??
Endgame
vs Ostrovskiy
Blitz·2024
▶
#26e5??
Tactics
vs Ramos Silvera
Blitz·2024
▶
#25g4??
Tactics
vs Albornoz Cabrera
Blitz·2024
▶
#95Kd5??
Endgame
vs Orta Ruz
OTB·2024
▶
#40Re1??
Tactics
vs Soto
Blitz·2024
▶
#49Qe7??
Endgame
vs Valderrama Quiceno
Blitz·2024
Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire
☰ All
♟ Classical
⚡ Rapid
🔥 Blitz
PRO
·
2025
2024
2023
2022
2021
2020
PRO
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Starting Position
839 Games
57%22%21%
1.e4
67%
638
1.b3
72%
99
1.Nf3
68%
68
1.d4
74%
29
1.c4
67%
3
1.g3
100%
2
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