Krzysztof Chojnacki vs Marcin Sieciechowicz
Krzysztof Chojnacki (43, IM, POL) and Marcin Sieciechowicz (34, IM, POL) have met 12 times in classical OTB. Sieciechowicz leads with 2 wins to 1, with 9 draws — a 75% draw rate. Their last meeting at II Festiwal Szachowy FENIKSA - Otwarte Mistrzostwa Inowroclawia w Szachach Blyskawicznych 2026 r. saw Sieciechowicz prevail. With current classical ratings of 2263 and 2386, the Elo model gives Sieciechowicz a 51% chance of winning a classical game with white.
Head-to-Head Score
If they played today · Classical
Based on current Elo: 2263 vs 2386 (Δ -123)
With Krzysztof Chojnacki as white
26% Krzysztof23% draw51% Marcin
With Marcin Sieciechowicz as white
19% Krzysztof19% draw62% Marcin
Estimate from Elo only · doesn't account for recent form, opening prep, or context.
Career Compare
| Krzysztof Chojnacki | Marcin Sieciechowicz | |
|---|---|---|
| Current rating (STD) | 2263 | 2386+3 |
| Peak rating | 2444 · Sep 2012 | 2462 · Jun 2013 |
| Peak age | 29 | 21 |
| World rank now | #5,323 | #1,926 |
| World rank peak | #1,346 | #1,141 |
| Federation rank now | #181 | #75 |
| Games (career, STD) | 848 | 1,296 |
| Months active | 217 | 205 |
| % white wins | 56% | 60% |
| % black wins | 56% | 49% |
| TPR last 12m (STD) | 2223 | 2338 |
| Activity 12m (games) | 225 | 354 |
Best Win
Krzysztof Chojnacki
Marcin Sieciechowicz
Highest-rated opponent ever beaten · STD primary, rapid/blitz for context
All Meetings (30)
Common Opponents
Tournaments Both Played
Cohort Position
Each player compared to active peers (same federation, ±75 Elo, played in last 12 months).
Krzysztof Chojnacki
Marcin Sieciechowicz