CChessStats

44. Memorial Ludwika Zamenhofa 2025 - open C

Open SwissStandard

114 players participated in this 9-round tournament, held from 27 Dec 2025 to 29 Dec 2025 in Bialystok, Poland. 5 federations represented. Top 10 Elo average was 1743, and top seed was Weronika Trzcinska (🇵🇱 POL, 1798).

Kamil Jasiulewicz (🇵🇱 POL, 1764) won with 8.0/9, ahead of Oliwier Sienicki (7.0) and Andrzej Kozlowski (7.0). Jasiulewicz won solo starting round 5.

The biggest upset came in round 7: Wiktoria Trzcinska (1403) beat Piotr Kozlowski (1775), a +372-point gap.

Location
🇵🇱Bialystok, Poland
Dates
27 Dec 2025 → 29 Dec 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 9 rounds
Top seed
🇵🇱Weronika Trzcinska1798
Avg top 10
1,743
Participants
114
Federations · 5 represented
🇵🇱Poland×104
FIDE (no federation)×4
🇪🇸Spain×1
🇵🇸Palestine×1
🇬🇪Georgia×1
Top 3

How it unfolded

Top 6 · 9 rounds

Kamil Jasiulewicz led from R5; +1.0-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R5.

Co-leaders
52
21
9
3
1
1
1
1
1
2.54.579R1R2R3R4R5R6R7R8R9
R5–R9 · LEAD HELD

Kamil Jasiulewicz never relinquished the lead after R5; final gap +1.0 over the runner-up.

R8 · HEAD-TO-HEAD · WINNER VS 2ND

Kamil Jasiulewicz drew with Andrzej Kozlowski (Black).

WIN STREAKS · 3 top finishers

Kamil Jasiulewicz 7 wins (R1–R7)Andrzej Kozlowski 5 wins (R3–R7)Oliwier Sienicki 3+3 wins (R1–R3, R5–R7)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Kamil Jasiulewicz*
½
1
—
2Andrzej Kozlowski
½
*
½
—
3Oliwier Sienicki
0
½
*—
4Bartosz Chelstowski———*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Jasiulewicz, Kamil1764POL+33N+35B+25N+2B+10N+7B+6N=3N=8B8.050.555.548.751972+72.8
2Sienicki, Oliwier1687POL+44B+53N+78B−1N+38B+23N+14B=5N=3B7.047.551.536.751818+59.2
3Kozlowski, Andrzej1648POL+77B−71N+44B+48N+52B+9N+13N=1B=2N7.045.549.538.001797+30.0
4Chelstowski, Bartosz1649POL=82N+102B−12N+54B+101N+10B+11N=16B+13N7.040.543.032.251836+64.4
5Kaczmarek, Tomasz1793POL+27N=12B=24N+82B+49N=15B+7N=2B=6N6.547.551.035.501752-7.2
6Kozlowski, Cezary1703POL+54B+58N=51B+12N=22B+40N−1B+14N=5B6.546.050.534.251789+46.0
7Niczyporuk, Daniel1665POL+61B+48N+36B=11B+16N−1N−5B+49B+22N6.546.050.533.001806+34.4
8Matejczyk, Jakub1738POL+68N+59B+41N+15B=11N−13B=39N+35B=1N6.545.550.034.501845+22.2
9Konkol, Sandra1691POL+66N+72B−10N+24B+50N−3B+36N=39B+15N6.543.547.532.001743+21.2
10Minkiewicz, Filip1530POL+79B+47N+9B+16N−1B−4N=18B=30N+42B6.049.053.032.251763+112.8
11Alwazir, Abdalhadi1740PLE+55B+74N+14B=7N=8B=19N−4B+23N=18B6.048.052.032.501730-1.8
12Oszutowski, Antoni1593POL+98B=5N+4B−6B+37N−17N+46B+32B=16N6.047.550.531.751714+46.0
13Trzcinska, Weronika1798POL+70B=73N+71B=38N+51B+8N−3B+17N−4B6.044.548.530.001725-28.0
14Cybulski, Wojciech1629POL+37N+56B−11N+84B+45N+22B−2N−6B+35N6.044.548.028.501681+9.6
15Zimochocki, Roman1650POL+92B+63N+39B−8N+71B=5N=19B+40N−9B6.044.047.528.251681+6.2
16Dajek, Weronika1705POL+104N+49B+60N−10B−7B+72N+51B=4N=12B6.043.045.526.5016980.0
17Ekner, Mateusz1643POL−56N=37B+103N+29B+82N+12B=22N−13B+24N6.041.544.028.251769+35.2
18Zdechlik, Aleksander1651POL+34N−50B=54N+91B=36N+84B=10N+37B=11N6.040.043.528.251615-15.2
19Kowalczyk, Michal1687POL+107N+84B−50N+72B+27N=11B=15N=24B=39N6.040.042.526.751700+6.0
20Tokajuk, Aleksander0POL−35N+33B+59N−26B+43N−36B+84N+74B+41N6.039.543.027.5016420.0
21Markucinski, Mateusz0POL−48B+61N=46B−83N+65B=53N+71B+85N+38B6.035.539.026.2515850.0
22Businski, Karol1712POL+45B+57N=38B+50B=6N−14N=17B+48N−7B5.544.048.527.251669-8.8
23Grazul, Alan0POL−25N+111B+35N+43B+41N−2B+42N−11B=28N5.544.045.023.7516540.0
24Wolpiuk, Bartlomiej1551POL+112B=26N=5B−9N+81B+75B+28N=19N−17B5.544.044.523.001702+27.6
25Kicinska, Malgorzata1639POL+23B+101N−1B−40N=55B+54B−49N+56N+48B5.541.043.523.751537-38.0
26Strojek, Kazimierz1701POL+29N=24B−82N+20N+83B=42B−35N+59B=51B5.539.543.027.001663-5.6
27Kowalczyk, Julia1483POL−5B+98N+94B+57N−19B=38N−30B+83N+60N5.538.541.521.001623+45.6
28Talecki, Karol1624POL+64B=76N=52B−71N+44B+50N−24B+72N=23B5.537.541.525.001591-6.0
29Krol, Michal1449POL−26B+112N=74B−17N−47B+67N+88B+63N+58B5.537.538.019.501551+30.8
30Domoradzki, Tomasz1619POL=102N−82B−37N+67B+56N+101B+27N=10B=34N5.537.039.524.001666+4.2
31Puszko, Szymon1692POL+114B−36N−55B+89N−46B+61N+44B=53N+40B5.537.037.020.251525-64.8
32Butkiewicz, Hanna1673POL=52B+85N+73B=51N−40B=48N+83B−12N+53B5.536.540.022.251634-17.2
33Osmolski, Bartosz1481POL−1B−20N+98B−93N+97B+96N+73B=43B+49N5.536.539.520.001728+51.2
34Trzcinska, Wiktoria1403POL−18B−89N+110B+94N+57B=49B+75N=38N=30B5.536.037.520.501676+77.2
35Smolko, Piotr1570POL+20B−1N−23B+99N+93B+52N+26B−8N−14B5.045.048.022.001582+6.8
36Lobacz, Cezary1552POL+86N+31B−7N=39B=18B+20N−9B−47N+76B5.044.548.024.501523-6.8
37Partskhaladze, Mariam0GEO−14B=17N+30B+73N−12B+58N+85B−18N=57B5.042.546.022.7516220.0
38Mikulicz, Piotr1597POL+97N+87B=22N=13B−2N=27B+86N=34B−21N5.042.545.521.251550-13.2
39Rutkowski, Piotr0POLF+43B−15N=36N+78B+85N=8B=9N=19B5.042.542.524.5016820.0
40Pawluczuk, Maciej1512POL−87N+105B+86N+25B+32N−6B+41N−15B−31N5.041.043.522.001662+51.2
41Wilczewski, Michal1621POL+103N+62B−8B+55N−23B+71N−40B+50N−20B5.040.543.020.001615-0.6
42Panasiuk, Blazej1598POL−76B+64N=77B+65N+63B=26N−23B+45B−10N5.039.543.523.251720+37.2
43Wydornik, Robert1618POL+99B−39N+92B−23N−20B+64N+55B=33N=46B5.039.542.520.751673+5.2
44Chojnowski, Jakub1445POL−2N+100B−3N+95B−28N+111B−31N+80B+74N5.039.040.015.001404-6.4
45Choinski, Ignacy1467POL−22N+109B+47B+58N−14B−51N+78B−42N+72B5.038.540.519.501613+44.8
46Roszkowski, Filip1489POL−88N+97B=21N=75B+31N=60B−12N+86B=43N5.038.041.021.751653+41.2
47Bochnia, Szymon1670POL+69N−10B−45N=64B+29N+91B=74N+36B—5.034.538.022.751584-32.8
48Sulkowski, Ignacy1536POL+21N−7B+95N−3B+87N=32B+60N−22B−25N4.544.047.019.751461-11.8
49Roszkowska, Zuzanna1553POL+90B−16N+96B+76N−5B=34N+25B−7N−33B4.543.046.018.751425-40.0
50Sazon, Adam1498POL+89B+18N+19B−22N−9B−28B+87N−41B=52N4.542.546.021.251530+3.4
51Kaniewski, Ignacy1595POLF+88B=6N=32B−13N+45B−16N+52B=26N4.542.542.521.751644+12.8
52Perkowska, Amelia1437POL=32N+67B=28N+60B−3N−35B+57B−51N=50B4.541.045.521.251547+45.2
53Buchneu, Uladzislau1541FID+100N−2B=56N=62B=86N=21B+69N=31B−32N4.541.044.019.501527-4.4
54Panasiewicz, Natalia1465POL−6N+113B=18B−4N+89B−25N+79B−58N+90B4.540.541.014.501271-31.2
55Majcher, Maciej1480POL−11N+93B+31N−41B=25N=59B−43N=87B+86N4.538.541.518.751528+7.0
56Hanc, Maksymilian0POL+17B−14N=53B−85N−30B+89N+91N−25B+83B4.538.041.518.7515460.0
57Kozlowski, Jan1557POL+109N−22B+66N−27B−34N+76B−52N+82B=37N4.538.040.016.501264-63.6
58Domagala, Wojciech1555POL+113N−6B+107N−45B=62N−37B+66N+54B−29N4.538.038.514.251498-18.0
59Sosnowski, Oliwier1556POL+96B−8N−20B+97N=90B=55N+81B−26N=61B4.537.540.516.251388-46.0
60Kaczan, Anna1619POL+105B+94N−16B−52N+76B=46N−48B+90N−27B4.536.038.515.501167-94.4
61Olempijuk, Bartosz1408POL−7N−21B+100N−86B+113N−31B+95N+75B=59N4.536.036.512.751599+32.8
62Klimuszko, Maciej0POL+83B−41N=63B=53N=58B−73N=68B+71N=65B4.535.539.018.7515360.0
63Sadowski, Lukasz1530POL+108N−15B=62N+88B−42N−86B+77N−29B+87N4.535.537.515.25765-52.4
64Dakowicz, Wiktoria0POL−28N−42B+108N=47N=73B−43B+111N+78N=68B4.535.036.013.751492+9.2
65Szpakowicz, Adam1483POL−75N+106B=88N−42B−21N+102B=80N+81B=62N4.533.536.015.00887-19.6
66Semeniec, Szymon1449POL−9B+110N−57B−90N+94B=79N−58B+89N+85B4.533.034.513.501400-10.0
67Koroniecki, Rafal0POL=85B−52N−83B−30N+105B−29B+92N+101B+91N4.532.034.513.7514130.0
68Bryczkowski, Dominik1475POL−8B−96N−93N+112B+95N=80B=62N+94B=64N4.531.532.013.001407-7.6
69Smiarowski, Robert1418POL−47B−79N+112B−81N+110B+93N−53B+73N=70B4.530.531.011.251471+4.6
70Koronkiewicz, Adam1487POL−13N−95B+106N+113B−75N−87B+108N+93B=69N4.528.529.010.251390-9.2
71Perkowski, Dawid1505POL+80N+3B−13N+28B−15N−41B−21N−62B+94N4.044.047.019.501598+26.8
72Dabrowska, Eliza1537POL+110B−9N+90B−19N+79B−16B+82N−28B−45N4.040.041.512.50843-74.4
73Semeniec, Zbigniew1595POL+95N=13B−32N−37B=64N+62B−33N−69B+93N4.038.541.515.751326-34.0
74Szekowski, Mateusz1558POL+93B−11B=29N−77N+102B+90N=47B−20N−44B4.038.040.514.251378-41.2
75Kozlowski, Piotr1775POL+65B−78N=76B=46N+70B−24N−34B−61N+97B4.037.540.516.501381-68.0
76Wasiluk, Patryk0POL+42N=28B=75N−49B−60N−57N+96B+84B−36N4.036.539.516.2515060.0
77Bieganski, Franciszek0POL−3N+80B=42N+74B−85B−83N−63B=88N+98B4.035.038.015.2513930.0
78Garbaczewski, Jakub1585POL+106N+75B−2N=101B−39N=82B−45N−64B+95N4.034.537.012.501430-21.2
79Sakowski, Oskar0POL−10N+69B−84N+107B−72N=66B−54N+103B=82N4.033.035.513.5013740.0
80Leszczynski, Marek0POL−71B−77N−99B+109N+92B=68N=65B−44N+101N4.031.033.012.5013980.0
81Kuzmicz, Jakub0POL−84N−107B+105N+69B−24N+104B−59N−65N+99B4.030.533.012.5013420.0
82Dymidiuk, Jan0POL=4B+30N+26B−5N−17B=78N−72B−57N=79B3.543.047.018.5015440.0
83Pilka, Oskar1559POL−62N=103B+67N+21B−26N+77B−32N−27B−56N3.540.042.515.75822-50.0
84Lenkov, Dzmitry1533FID+81B−19N+79B−14N+96B−18N−20B−76N=88B3.539.542.512.75857-40.0
85Gorecki, Jaroslaw1613POL=67N−32B+102N+56B+77N−39B−37N−21B−66N3.539.041.513.25761-22.8
86Bryczkowska, Magdalena0POL−36B+114N−40B+61N=53B+63N−38B−46N−55B3.538.038.011.2514240.0
87Przybyszewski, Kamil0POL+40B−38N−101B+92N−48B+70N−50B=55N−63B3.536.038.515.2513650.0
88Siemienkiewicz, Jakub0POL+46B−51N=65B−63N−91N+103B−29N=77B=84N3.535.037.513.5013480.0
89Pasiuk, Sebastian0POL−50N+34B=91N−31B−54N−56B+107N−66B+103N3.535.037.512.2513870.0
90Kuklis, Saveli0FID−49N+104B−72N+66B=59N−74B+101N−60B−54N3.533.035.511.7514430.0
91Waszczuk, Mateusz1506POL−94B+99N=89B−18N+88B−47N−56B+102N−67B3.533.035.510.75858-19.6
92Wieliczko, Natalia0POL−15N+108B−43N−87B−80N=106N−67B+110N+102B3.530.031.57.258350.0
93Ostrowski, Jakub0POL−74N−55N+68B+33B−35N−69B+104N−70N−73B3.036.539.012.5013710.0
94Madejski, Mikolaj0POL+91N−60B−27N−34B−66N+98N+99B−68N−71B3.035.038.09.5011740.0
95Guziejko, Michal0POL−73B+70N−48B−44N−68B+110N−61B+96N−78B3.034.035.59.0011860.0
96Paulouski, Robert0FID−59N+68B−49N+104B−84N−33B−76N−95B+108N3.032.034.09.0013940.0
97Butkiewicz, Wojciech0POL−38B−46N+111N−59B−33N−108B+109N+104B−75N3.030.531.55.5012970.0
98Borowski, Patryk0POL−12N−27B−33N+108B−104N−94B+113N+111B−77N3.029.530.03.507080.0
99Piotrowski, Daniel0POL−43N−91B+80N−35B−111N+113B−94N+108B−81N3.027.528.06.507430.0
100Charytoniuk, Jan0POL−53B−44N−61B=105N−103N+112B−102N+106N=104B3.026.527.05.5011390.0
101Wojdakowska, Emilia1487POL+111B−25B+87N=78N−4B−30N−90B−67N−80B2.537.538.56.501302-28.0
102Siedlecki, Mateusz0POL=30B−4N−85B+103B−74N−65N+100B−91B−92N2.534.537.08.2511660.0
103Orlowska, Natalia0POL−41B=83N−17B−102N+100B−88N+106B−79N−89B2.531.033.57.2513340.0
104Sirocka, Gabriela1466POL−16B−90N+109B−96N+98B−81N−93B−97N=100N2.528.530.56.50900-8.0
105Lewko, Piotr0POL−60N−40N−81B=100B−67N−109N=110B=113B+112N2.525.025.53.007440.0
106Szczesiul, Antoni0POL−78B−65N−70B−110N+112N=92B−103N−100B+113N2.524.024.52.756990.0
107Serradell Villa, Andrea1439ESP−19B+81N−58B−79NFF−89B=112N+110B2.524.024.05.75820-21.6
108Troc, Michal0POL−63B−92N−64B−98N+109B+97N−70B−99N−96B2.029.031.05.006700.0
109Kotarbinski, Adam0POL−57B−45N−104N−80B−108N+105B−97BF+111N2.024.524.53.506940.0
110FIDE 911741200—−72N−66B−34N+106B−69N−95B=105N−92B−107N1.530.032.53.756570.0
111FIDE 218765840—−101N−23N−97BF+99B−44N−64B−98N−109B1.028.528.53.006570.0
112Droznakiewicz, Maria0POL−24N−29B−69N−68N−106B−100NF=107B−105B0.530.530.51.2510990.0
113FIDE 911952500—−58B−54NF−70N−61B−99N−98B=105N−106B0.529.029.01.256590.0
114Rogozinski, Wieslaw1449POL−31N−86BF——————0.09.09.50.00891-4.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
44. Memorial Ludwika Zamenhofa 2025 - open C — Bialystok, Poland | Chess Tournament Results | ChessStats