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2025 The Marble Challenge: Grandmaster Chess Match (Standard) GM Ihor Kovalenko- GM Ihor Samunenkov

Double Round-RobinStandard
Location
🇺🇦Morshyn, Lviv region, Ukraine
Dates
04 Aug 2025 → 07 Aug 2025
Time control
Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1
System
Double RR · 4 rounds
Top seed
🇺🇦GMIgor Kovalenko2676
Avg top 10
2,612
Participants
2
Titled players · 2
GM×2
Federations · 1 represented
🇺🇦Ukraine×2
Top 3
  • 🥇
    GMIgor Kovalenko
    🇺🇦UKR·2676
    2.5pts·2643perf-1.8
  • 🥈
    GMIhor Samunenkov
    🇺🇦UKR·2548
    1.5pts·2589perf+1.8

How it unfolded

Top 2 · 4 rounds

GM Igor Kovalenko led from R1 onwards, the runner-up race stayed tight.

Co-leaders
1
1
2
1
#1#2#3#5R1R2R3R4
Kovalenko#1Samunenkov#2
R1–R4 · LEAD HELD

GM Igor Kovalenko never relinquished the lead after R1; final gap +1.0 over the runner-up.

HEAD-TO-HEAD · WINNER VS 2ND · 4 games

GM Igor Kovalenko 2.5–1.5 against GM Ihor Samunenkov (R1 1-0, R2 ½-½, R3 0-1, R4 1-0) — decisive in 3/4.

Cross-table

#PlayerElo12PtsSBBhΔ EloPerf
1🇺🇦GMKovalenko, Igor2676*
1½
2.53.756.0-1.82643
2🇺🇦GMSamunenkov, Ihor2548
½0
*1.53.7510.0+1.82589

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
2025 The Marble Challenge: Grandmaster Chess Match (Standard) GM Ihor Kovalenko- GM Ihor Samunenkov — Morshyn, Lviv region, Ukraine | Chess Tournament Results | ChessStats