Avatar of Kirill Stupak

Kirill Stupak GM

Username: S2PAc

Location: Minsk

Playing Since: 2018-07-08 (Active)

Wow Factor: ♟♟♟♟♟

Chess.com

Rapid: 2561
75W / 12L / 23D
Blitz: 2909
1033W / 838L / 213D
Bullet: 2876
561W / 507L / 72D

Kirill Stupak (aka S2PAc) – Grandmaster Extraordinaire

Kirill Stupak, known to many simply as S2PAc, is a titanic figure in the chess world, holding the prestigious title of Grandmaster awarded by FIDE. With a flair for blitz, bullet, and rapid chess, Kirill has maneuvered through thousands of games, showcasing not only brilliant strategy but also some admirable resilience.

Rise Through the Ranks

Kirill’s journey is a rollercoaster of ratings – starting from humble beginnings with a blitz rating of 983 in mid-2018 to peaking impressively at 2946 in blitz by early 2020. Bullet fans rejoice since Kirill hit a peak bullet rating of 2928 almost simultaneously – truly a dual-threat when the clock is ticking down.

Rapid games aren’t left out either, with a peak rating crossing 2561 in 2025, proving Kirill’s adaptability across all time controls.

Playing Style and Psychological Mastery

With an average of 81 moves per win and a gritty endgame frequency over 83%, Kirill doesn’t just rush to finish but grinds out victories that would make even grandmasters envious. A comeback rate above 87% reveals a player who is never truly out, even when losing material or position. Psychological strength is evident, with a tilt factor on the lower side and a uniquely high win rate playing at 8 AM – maybe Kirill drinks some magical morning elixir?

Notable Stats and Quirks

  • Win/Loss Record: Over 1000 blitz wins and almost 600 bullet wins to his name.
  • Longest Winning Streak: A staggering 27 straight wins – talk about putting the pressure on your opponents!
  • Whites to Blacks win rate: 53% with white vs. 47% with black – showing a slight preference for seizing the initiative.
  • Favorite Openings: Since Kirill's opening strategies are "Top Secret," expect the unexpected, but a fondness for the Indian Game variants shines through.

The Most Recent Chess Battles

In May 2025, Kirill dazzled the chess community by executing a deadly checkmate against opponent gp9isback23 in a game showcasing classic positional build-up followed by tactical fireworks in the endgame. The victory was no fluke – Kirill's relentless pursuit and tactical sharpness left no room for mercy.

Even when defeated (it happens to the best of us), Kirill’s games are lessons in resilience and complexity, often battling titans close to the rating ceiling 2900+.

Off the Board

Legend has it Kirill sometimes sleeps with a chessboard under the pillow. Whether true or not, the data echoes a passion that transcends mere competition. A Grandmaster who embodies the spirit of chess: strategic, relentless, and sometimes a bit mysterious.

So, next time you face S2PAc, remember – you’re not just battling pieces; you’re clashing against a chess tempest that has stormed through thousands of games, always coming out stronger.


Coach Chesswick's Profile Photo
Coach Chesswick

Quick summary

Nice work — your recent games show strong tactical vision and reliable conversion in favorable positions. The win vs dancing_ra1n in the Caro‑Kann demonstrates good pattern recognition around queen/king tactics and simplifying into a winning ending. Your loss in the French Advance highlights recurring structural and coordination issues to tidy up. Below are targeted, practical steps to keep the positives and fix the gaps.

Recent games I reviewed

Games checked (high-level notes):

  • Win (2025-03-19) vs dancing_ra1n — Caro‑Kann (Advance). You handled tactical complications well, exchanged into a winning sequence and finished confidently. See the key sequence below:
  • Loss (2025-03-19) vs dancing_ra1n — French Advance. You ended up with structural weaknesses (advanced c-/f-pawns and backward squares) and allowed the opponent to open lines at the right time.
  • Earlier wins (2024, 2022) — strong in tactics and attacking play, especially vs kingside weaknesses and when creating passed pawns/queens.

What you’re doing well

  • Strong tactical vision — you spot winning combinations and tactical shots reliably (many quick conversions to wins).
  • Conversion ability — good at simplifying when ahead (trading down into winning endgames or winning material).
  • Opening results are excellent in several lines (notably Caro-Kann Defense at 100% in your sample and high win rates in the London/Czech/Catalan lines).
  • Good endgame awareness — you know how to push passed pawns and use queening threats (seen in prior games with promotions and decisive rook/queen activity).
  • Generally high practical scoring (Strength Adjusted Win Rate ~0.546) — you get results against a range of opponents.

Key areas to improve

  • Pawn structure and timing of pawn pushes — examples: early f‑pawn or c‑pawn advances (in the French loss) created weak squares and targets. Before advancing a pawn, check whether your king and pieces are safe and whether the advance creates holes.
  • Coordination in closed/locked positions — sometimes a single side pawn break (or lack of it) decides who gets active pieces. Improve plans for opening lines when you need them and avoid creating isolated/doubled pawns without compensation.
  • King safety and piece activity when you play the French/Advance setups — the Advance can leave you with overextended pawns; watch for counterplay on the flank and central breaks.
  • Prophylaxis and anticipating opponent counterplay — ask “what does my opponent want?” on each move so you aren’t surprised by freeing moves or tactical intermezzi (example: exchanges leading to an opponent activating a queen or knight unexpectedly).

Concrete drills and study plan (4‑week focused)

Short, daily routines to fix the issues and amplify strengths:

  • Daily tactics: 15–20 focused puzzles (spotting queen forks, intermezzo and discovered checks). Prioritize puzzles that arise from openings you play.
  • Pawn-structure studies: 3× per week, 20–30 minutes — study typical pawn breaks and resulting plans in the French Defense: Advance Variation and the Caro-Kann Defense. Use model games from strong players in those systems.
  • Targeted opening work (3 short sessions/week): pick your main reply choices and learn one reliable plan per line (plans for both sides). Keep a 1‑page cheat sheet of typical piece setups and common tactical motifs for each line.
  • Post‑mortem habit: after each loss or close game, annotate the first 10 moves and the critical 5 positions. Note "Why did I play that?" and "What did my opponent threaten?" — do this within 24 hours while the memory is fresh.
  • Practical play: 10 rapid training games (15+10 or 10+5) where you deliberately focus on one theme — e.g., “no early f‑push without development” — then review the results.

Drill examples you can start right away

  • Set tactic trainer to enforce “queen tactics only” for 20 problems — builds the pattern recognition that won you the Caro‑Kann game.
  • Take the French Advance: play 5 training games as Black where you refuse to push f early — force yourself to complete development first. After each game, mark the moment where a different plan would have improved structure.
  • Endgame mini‑session: 10 rook+minor vs rook endgames and queen vs rook endgames — you’ve shown capacity to convert; make the technique bulletproof.

Next session checklist (before you play)

  • 5 minutes: review your 1‑page opening sheet for the line you expect to meet.
  • 5 minutes: 5 quick tactic puzzles (warm up pattern recognition).
  • Set a single in-game goal (example: “avoid creating isolated pawns” or “don’t move the f‑pawn until king is castled”).

Offer — how I can help next

If you want, I can:

  • Annotate one of these games move‑by‑move with short comments and alternative plans.
  • Create a 4‑week personalized training calendar based on your available time.
  • Prepare a one‑page openings cheat sheet for your favorite defenses (French Advance, Caro‑Kann lines you use).

Tell me which of the three you want first and I’ll prepare it.



🆚 Opponent Insights

Recent Opponents
javicio 0W / 1L / 0D View
yueyangshan 0W / 0L / 1D View
Georgios Ketzetzis 0W / 1L / 0D View
Dmitry MIschuk 2W / 0L / 0D View
melonkholia 1W / 0L / 0D View
Psych0Cookie 0W / 1L / 0D View
Ruslan Gadzhiev 2W / 0L / 0D View
Jan Vykouk 1W / 1L / 0D View
Ruben Felgaer 0W / 0L / 1D View
Seo Jungmin 1W / 1L / 0D View
Most Played Opponents
Fidel Corrales Jimenez 39W / 30L / 0D View Games
Sergey Drygalov 27W / 30L / 2D View Games
Abdulla Gadimbayli 25W / 25L / 7D View Games
luoxiaoke100 20W / 28L / 4D View Games
Dmitrij Kollars 20W / 18L / 6D View Games

Rating

Year Bullet Blitz Rapid Daily
2025 2876 2909 2561
2024 2875 2876 2561
2023 2776
2022 2871 2840 2561
2021 2887 2790 2552
2020 2928 2830 2387
2019 2727 2882
2018 2658 2870
Rating by Year2018201920202021202220232024202529282387YearRatingBulletBlitzRapid

Stats by Year

Year White Black Moves
2025 10W / 5L / 3D 10W / 8L / 2D 93.2
2024 31W / 11L / 7D 20W / 19L / 7D 85.8
2023 5W / 3L / 2D 3W / 8L / 0D 88.5
2022 28W / 14L / 5D 26W / 19L / 1D 81.3
2021 58W / 18L / 14D 41W / 28L / 14D 83.6
2020 274W / 205L / 62D 256W / 235L / 40D 87.0
2019 229W / 209L / 51D 194W / 263L / 41D 84.9
2018 262W / 144L / 37D 238W / 175L / 33D 82.1

Openings: Most Played

Bullet Opening Games Wins Losses Draws Win Rate
Döry Defense 69 36 25 8 52.2%
Amar Gambit 64 30 32 2 46.9%
Australian Defense 58 27 27 4 46.5%
Czech Defense 51 30 20 1 58.8%
London System: Poisoned Pawn Variation 48 24 17 7 50.0%
Hungarian Opening: Wiedenhagen-Beta Gambit 44 25 17 2 56.8%
Modern 44 21 22 1 47.7%
Grünfeld Defense: Counterthrust Variation 43 24 14 5 55.8%
Amazon Attack: Siberian Attack 41 16 19 6 39.0%
Caro-Kann Defense 40 17 20 3 42.5%
Blitz Opening Games Wins Losses Draws Win Rate
London System: Poisoned Pawn Variation 144 78 49 17 54.2%
Döry Defense 140 75 54 11 53.6%
Czech Defense 126 62 43 21 49.2%
Caro-Kann Defense 107 58 44 5 54.2%
Amazon Attack: Siberian Attack 81 44 26 11 54.3%
Benoni Defense: Modern Variation 72 39 33 0 54.2%
Slav Defense: Bonet Gambit 70 29 31 10 41.4%
Grünfeld Defense: Counterthrust Variation 66 33 27 6 50.0%
French Defense: Classical Variation, Svenonius Variation 64 27 27 10 42.2%
Hungarian Opening: Wiedenhagen-Beta Gambit 55 24 26 5 43.6%

🔥 Streaks

Streak Longest Current
Winning 27 0
Losing 10 1
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