CChessStats

307th YMCA Autumn 2025-B Round 2-5

Round-RobinStandard

12 players participated in this 5-round tournament, held from 02 Oct 2025 to 23 Oct 2025 in Warszawa, Poland. 2 federations represented. Top 10 Elo average was 1866, and top seed was Lukasz Bobinski (🇵🇱 POL, 1930).

Wojciech Pietrzak (🇵🇱 POL, 1804) won with 4.0/5, ahead of Jakub Sucharski (3.5) and Tomasz Kania (3.0). Pietrzak won solo starting round 4.

The biggest upset came in round 3: Hanna Bartczak (1728) beat Lukasz Bobinski (1930), a +202-point gap.

Location
🇵🇱Warszawa, Poland
Dates
02 Oct 2025 → 23 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 5 rounds
Top seed
🇵🇱Lukasz Bobinski1930
Avg top 10
1,866
Participants
12
Federations · 2 represented
🇵🇱Poland×11
🇸🇪Sweden×1
Top 3

How it unfolded

Top 12 · 5 rounds

Wojciech Pietrzak led from R4 onwards, the runner-up race stayed tight.

Co-leaders
1
1
2
1
1
#1#2#6#12R1R2R3R4R5Pietrzak takes lead
R4 · LEADER CHANGE16 Oct

Wojciech Pietrzak takes the sole lead (3.0/4).

WIN STREAKS · 2 top finishers

Wojciech Pietrzak 4 wins (R2–R5)Jakub Sucharski 3 wins (R3–R5)

Cross-table

#PlayerElo123456789101112PtsSBBhΔ EloPerf
1🇵🇱Pietrzak, Wojciech1804*11114.07.507.5+41.02612
2🇵🇱Sucharski, Jakub1812*11½13.56.257.0+72.82207
3🇵🇱Kania, Tomasz17750*1½½13.05.2511.0+22.81941
5🇵🇱Jaroszuk, Marcin17340*½½½12.54.0010.5+12.41827
4🇵🇱Markiewicz, Michal18680½*112.54.258.5+6.61933
7🇸🇪Pettersson, Alexander18370½½*012.03.7512.5-11.01758
6🇵🇱Bobinski, Lukasz193001*012.03.008.0-24.41816
9🇵🇱Bartczak, Hanna17280½1*01.53.259.5+2.01757
10🇵🇱Mazurek, Jerzy1912½0*½½1.53.008.5-14.21787
8🇵🇱Kadzinski, Wieslaw1928½0½*½1.52.758.0-17.21774
11🇵🇱Moskwinski, Marek190700001*1.01.5014.0-45.61551
12🇵🇱Basiaga, Sebastian188700½½*1.01.507.5-21.01683

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets