Chess Stalker
M
GM

Mons, Leon

GER GER·Born 1995

FIDE OTB · #4614950 · 809 Games

Classical2482792 g
Rapid251017 g
Blitz24780 g

Play against Mons's Twin

PRO

Uses their openings, level & style

Statistics

Total

809

Wins

314

Draws

326

Losses

169
39%40%21%

Play Style

before facing them
Elite accuracy: 93.9% average
Very consistent (91%)
Very precise: only 0.1 blunders/game
Dominates 1.c4 ♔ (74% in 19 games)

Deep Analysis

Stockfish 18 · Classical games · 155 analyzed
Accuracy by phase
Opening
96.7%
Middlegame
94.5%
Endgame
95.3%
Clutch Factor
+6%
Winning (+2)
95%
Equal
95%
Losing (−2)
89%
Problematic Pieces
21%
21 err
20%
20 err
16%
16 err
16%
16 err
15%
15 err
14%
14 err
Critical Moment
Move 51 avg
0%
1-15
0%
16-25
50%
26-35
17%
36-45
33%
46+
50% of blunders after move 26-35 — keep the tension until then.
Error Heatmap
8
Few
Many
e5
8 err
g7
6 err
c5
5 err
c6
5 err
f5
5 err
e5/g7 account for most of the errors. Force decisions in those zones.

Openings

809 Games

Weaknesses

— exploit these
aswhite50.0%Losses
Nimzo-Indian — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4
8 Games · Low sample · last played 3 years agoPlay this line
aswhite44.4%Losses
Italian: Giuoco Piano — 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5
9 Games · Low sample · last played last yearPlay this line

No significant weaknesses detected as black

Strengths

— avoid these
aswhite57.1%Wins
Sicilian: e6 Systems — 1.e4 c5 2.Nf3 e6
21 Games · last played 6 years ago
asblack60.0%Wins
Sicilian: 2...Nc6 — 1.e4 c5 2.Nf3 Nc6
10 Games · last played last year
asblack53.8%Wins
Nimzo-Indian — 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4
13 Games · last played 3 years ago

Critical Blunders

10 errors
fxg2??vs HorvathOTB · 2025
g3??vs Vachier-LagraveOTB · 2025
Nxd3??vs MarcelinOTB · 2024
Kh3??vs MuckleRapid · 2023
e5??vs MichalikOTB · 2023
Bxd7??vs ShengeliaOTB · 2023
c6??vs SchroederOTB · 2021
Kb5??vs SchroederOTB · 2021
Bg4??vs SchroederOTB · 2021
Ka6??vs SchroederOTB · 2021

Recent Games

Draw
Postny, Evgeny(2546)

Austrian Bundesliga 2025-... · 14 Dec 2025

½-½
Draw
Kozul, Zdenko(2500)

Austrian Bundesliga 2025-... · 13 Dec 2025

½-½
Loss
Idani, Pouya(2611)

Austrian Bundesliga 2025-... · 12 Dec 2025

1-0
Draw
Harshavardhan G B(2477)

Austrian Bundesliga 2025-... · 11 Dec 2025

½-½
Draw
Nisipeanu, Liviu-Dieter(2582)

Austrian Bundesliga 2025-... · 10 Dec 2025

½-½
Draw
Kozul, Zdenko(2500)

Round 4: Mons, Leon - Koz... · 2 Dec 2025

½-½

Endgame Statistics

PRO

Repertoire

8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
Move arrowsmost-played moves
Starting Position
Stockfish
386 Games
42%39%19%
MoveGamesPerformance%
1.e4
204
61%
1.Nf3
89
66%
1.d4
60
55%
1.c4Strong
19
74%
1.b3
6
42%
1.g3Strong
3
83%
1.f4Strong
2
100%
1.a3
2
50%
1.e3
1
50%

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