Scouting report: Jiri Kociscak (IM, CZE)

826 over-the-board games in the Chess Stalker database (786 classical, 9 rapid, 31 blitz): 46% wins, 27% draws, 27% losses. FIDE rating 2480 standard, 2427 rapid, 2475 blitz. 78 games analyzed with Stockfish: 94% accuracy, 0.03 blunders per game.

  • Opening repertoire of Jiri Kociscak 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 Jiri Kociscak's style so you can rehearse the matchup — free online.

Full report: https://chessstalker.com/fide/322121 — no account needed.

Jiri Kociscak

IM

Czechiaborn 1993FIDE ID 322121

Rating & statistics

FIDE rating lists · Sep 2023 – Sep 2026
2400
2440
2480
2520
2479 · Sep 2023
Oct
2024
Apr
Jul
Oct
2025
Apr
Jul
Oct
2026
Apr
Jul
Oct
Sep 2023Oct 2026
2480
2475
2427
2510peak, Nov 2019
826games
384wins, 46%
223draws, 27%
219losses, 27%

Play style

before facing them
Elite accuracy: 93.7% average
Solid conversion: 81%
Very consistent (91%)
Very precise: only 0.0 blunders/game
Dominates 1.d4 as ♔ (67% in 334 games)
Vulnerable to 1.c4 ♚ (only 44%)

Play against Kociscak's Twin

Their real openings, level & style

Based on 826 games

Openings

826 games

Weaknesses

where they slip as ♔ White
Sicilian: e6 Systems1.e4 c5 2.f3 e610 games, last played 16 years ago50.0%losses

Strengths

what holds up for them as ♔ White
Benko Gambit1.d4 f6 2.c4 c5 3.d5 b513 games, last played 2 months ago76.9%wins
Queen's Gambit Declined1.d4 d5 2.c4 e632 games, last played 2 months ago71.9%wins

Deep analysis

Stockfish · Classical · 78 analyzed
Accuracy by phase
Opening
96.5%
Middlegame
94.0%
Endgame
96.0%
Clutch factor
+5%
Winning (+2)
95%
Equal
95%
Losing (−2)
91%
Problematic pieces
27%
13 err
23%
11 err
17%
8 err
15%
7 err
10%
5 err
8%
4 err
Critical moment
Move 51 avg
0%
1-15
0%
16-25
0%
26-35
0%
36-45
100%
46+
100% of blunders occur after move 46. Keep tension until then.
Error heatmap · Critical squares
5
Few
Many
e4
5
e5
3
e6
3
c2
2
c3
2
e4/e5 concentrate most errors. Force decisions in those zones.

Critical blunders

10 errors
#52
d7?? vs Vyskocil
Endgame · OTB · 2025
#31
g7?? vs Jasny
Middlegame · OTB · 2022
#27
df8?? vs Chytilek
Endgame · OTB · 2020
#32
g6?? vs Vesselovsky
Middlegame · OTB · 2020
#12
xf7?? vs Stocek
Opening · Blitz · 2019
#55
f5+?? vs Navara
Endgame · Blitz · 2019

Recent games

Rybka, Simon(2350)

37th Czech Open E 2026 · 19 Jul 2026

½–½
Redzisz, Michal(2272)

37th Czech Open E 2026 · 19 Jul 2026

½–½
Rucek, Peter(2070)

37th Czech Open E 2026 · 18 Jul 2026

1–0
Prazak, Daniel(2312)

37th Czech Open E 2026 · 18 Jul 2026

½–½
Stehno, Pavel(2306)

TCh-CZE Extraliga 2025-26 · 29 Mar 2026

½–½
Konopka, Michal(2321)

Round 10: Konopka, Michal... · 28 Mar 2026

1–0

Endgame statistics

Repertoire

PRO
826 games in scope
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
417 games52%W28%D20%L
Move
1. d4
3342m
52%30%18
67%
1. e4
8314y
51%2029%
61%

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