Architektura Szachow - OPEN A
Open SwissStandard
31 players participated in this 9-round tournament, held from 20 Feb 2026 to 24 Feb 2026 in Poznan, Poland. 1 titled players. Top 10 Elo average was 1910, and top seed was Bruno Stachowiak (🇵🇱 POL, 2086).
Bruno Stachowiak (🇵🇱 POL, 2086) won with 9.0/9, ahead of Dominik Melerowicz (6.5) and Jakub Zadon (6.5). Stachowiak won solo starting round 4.
The biggest upset came in round 8: Samir Chakrar (1555) beat Pawel Polarczyk (1802), a +247-point gap.
Location
🇵🇱Poznan, Poland
Dates
20 Feb 2026 → 24 Feb 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 9 rounds
Titled players · 1
WFM×1
Federations · 1 represented
🇵🇱Poland×31
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsBruno Stachowiak led from R4; +2.5-point edge over the runner-up.
Co-leaders
12
6
3
1
1
1
1
1
1
R4–R9 · LEAD HELD
Bruno Stachowiak never relinquished the lead after R4; final gap +2.5 over the runner-up.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
Bruno Stachowiak beat Dominik Melerowicz (White).
WIN STREAKS · 3 top finishers
Bruno Stachowiak 9 wins (R1–R9)Dominik Melerowicz 3 wins (R1–R3)Jakub Zadon 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Bruno Stachowiak | * | 1 | 1 | 1 |
| 2Dominik Melerowicz | 0 | * | 1 | — |
| 3Jakub Zadon | 0 | 0 | * | 1 |
| 4Borys Paliwoda | 0 | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Stachowiak, Bruno | 2086 | POL | +13N | +10B | +4N | +2B | +5N | +3B | +11N | +6B | +7N | 9.0 | 45.5 | 50.0 | 50.00 | 2656 | +80.8 |
| 2 | Melerowicz, Dominik | 2085 | POL | +9B | +3N | +7B | −1N | =8B | =5B | =6N | +18N | +10B | 6.5 | 48.0 | 52.5 | 35.25 | 2005 | -11.6 |
| 3 | Zadon, Jakub | 1810 | POL | +27N | −2B | +13N | +12B | +7B | −1N | +4B | +5N | =8B | 6.5 | 47.5 | 49.5 | 31.25 | 2014 | +95.6 |
| 4 | Paliwoda, Borys | 1933 | POL | +14B | +28N | −1B | =5B | +24N | =6B | −3N | +15N | +16B | 6.0 | 42.5 | 44.5 | 23.50 | 1919 | -2.4 |
| 5 | Kordus, Tomasz | 1736 | POL | +25N | +6B | +8B | =4N | −1B | =2N | =7B | −3B | +17N | 5.5 | 49.0 | 51.5 | 27.00 | 1940 | +93.6 |
| 6 | Szymanski, Zbigniew | 1846 | POL | +23B | −5N | =11B | +16N | +15B | =4N | =2B | −1N | +14B | 5.5 | 45.5 | 48.5 | 25.25 | 1911 | +16.2 |
| 7 | Tomczyk, Michal | 1844 | POL | +31N | +21B | −2N | +17B | −3N | +13B | =5N | +9B | −1B | 5.5 | 45.5 | 46.5 | 21.75 | 1849 | +1.0 |
| 8 | Skrzypczak, Jan | 1977 | POL | +17N | +24B | −5N | =15B | =2N | =10B | =16N | +11B | =3N | 5.5 | 42.0 | 44.5 | 25.50 | 1885 | -18.4 |
| 9 | Kwiatek, Franciszek | 1733 | POL | −2N | +26B | =10N | =21B | +12N | =20B | +13N | −7N | +18B | 5.5 | 38.0 | 40.0 | 22.00 | 1858 | +51.2 |
| 10 | Lazniewska, ZofiaWFM | 1843 | POL | +18B | −1N | =9B | =14N | +19B | =8N | =15B | +21N | −2N | 5.0 | 44.5 | 48.0 | 22.50 | 1809 | -14.8 |
| 11 | Glatty, Zbigniew | 1873 | POL | =12N | +15B | =6N | =24B | =20N | +21B | −1B | −8N | +22B | 5.0 | 39.5 | 42.0 | 19.25 | 1800 | -14.8 |
| 12 | Szczygielski, Antoni | 1638 | POL | =11B | =19N | +23B | −3N | −9B | +26N | −14B | +27N | +20B | 5.0 | 34.5 | 36.5 | 15.25 | 1737 | +22.4 |
| 13 | Swiderski, Mikolaj | 1734 | POL | −1B | +18N | −3B | +30N | +14B | −7N | −9B | +26N | =15B | 4.5 | 42.0 | 44.0 | 15.25 | 1718 | -4.4 |
| 14 | Kaczmarczyk, Dominika | 1661 | POL | −4N | +27B | =20N | =10B | −13N | +25B | +12N | =16B | −6N | 4.5 | 36.5 | 38.5 | 16.00 | 1737 | +35.2 |
| 15 | Radziszewski, Leon | 1743 | POL | +30B | −11N | +25B | =8N | −6N | +24B | =10N | −4B | =13N | 4.5 | 36.5 | 38.5 | 14.50 | 1765 | +13.2 |
| 16 | Slavov, Wiktor | 1747 | POL | =26N | =20B | =21N | −6B | +23N | +17B | =8B | =14N | −4N | 4.5 | 36.0 | 38.0 | 17.00 | 1757 | +1.6 |
| 17 | Wawrzyniak, Bartosz | 1665 | POL | −8B | +22N | +28B | −7N | =18B | −16N | +31B | +19N | −5B | 4.5 | 35.0 | 36.0 | 12.75 | 1714 | +22.0 |
| 18 | May, Jakub | 1596 | POL | −10N | −13B | +27N | +29B | =17N | +28B | +20N | −2B | −9N | 4.5 | 33.5 | 35.5 | 11.75 | 1748 | +33.4 |
| 19 | Falendysh, Oleksandr | 1594 | POL | =20N | =12B | −24N | +25B | −10N | +22B | =21N | −17B | +29N | 4.5 | 29.5 | 31.5 | 13.50 | 1667 | +30.8 |
| 20 | Polarczyk, Pawel | 1802 | POL | =19B | =16N | =14B | +26N | =11B | =9N | −18B | −22N | −12N | 3.5 | 36.5 | 38.5 | 14.00 | 1581 | -52.4 |
| 21 | Gosciniak, Kacper | 0 | POL | F | −7N | =16B | =9N | +28B | −11N | =19B | −10B | +25N | 3.5 | 34.5 | 34.5 | 11.75 | 1695 | 0.0 |
| 22 | Chakrar, Samir | 1555 | POL | −24N | −17B | F | −28N | +30B | −19N | +29B | +20B | −11N | 3.0 | 26.0 | 26.0 | 7.50 | 1598 | +12.0 |
| 23 | Wawrzyniak, Aleksandra | 1619 | POL | −6N | =29B | −12N | +31B | −16B | −27N | =25N | +30B | F | 3.0 | 24.5 | 24.5 | 5.25 | 1532 | -40.0 |
| 24 | Wawrzyniak, Wojciech | 1748 | POL | +22B | −8N | +19B | =11N | −4B | −15N | F | F | F | 2.5 | 28.5 | 28.5 | 10.00 | 1722 | -5.4 |
| 25 | Wawrzyniak, Weronika | 1498 | POL | −5B | F | −15N | −19N | +27B | −14N | =23B | +31N | −21B | 2.5 | 28.5 | 28.5 | 4.50 | 1548 | +16.0 |
| 26 | Nowak, Jedrzej | 1554 | POL | =16B | −9N | +31N | −20B | =29N | −12B | F | −13B | −30N | 2.0 | 29.0 | 30.0 | 4.25 | 1467 | -37.6 |
| 27 | Nowak, Franciszek | 1596 | POL | −3B | −14N | −18B | F | −25N | +23B | +30N | −12B | F | 2.0 | 29.0 | 29.0 | 5.00 | 1450 | -56.4 |
| 28 | Pachura, Mateusz | 1773 | POL | +29N | −4B | −17N | +22B | −21N | −18N | F | F | F | 2.0 | 25.5 | 25.5 | 5.00 | 1596 | -47.6 |
| 29 | Van Ams, James | 1592 | POL | −28B | =23N | =30B | −18N | =26B | =31N | −22N | F | −19B | 2.0 | 22.0 | 22.0 | 4.00 | 1398 | -80.0 |
| 30 | Dixon, Teodor | 1500 | POL | −15N | =31B | =29N | −13B | −22N | F | −27B | −23N | +26B | 2.0 | 22.0 | 22.0 | 3.50 | 1432 | -2.8 |
| 31 | Siemieniak, Dominik | 1604 | POL | −7B | =30N | −26B | −23N | F | =29B | −17N | −25B | F | 1.0 | 23.5 | 23.5 | 2.00 | 1292 | -50.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Zadon, JakubPOL+95.66.5 pts · #3
- 2Kordus, TomaszPOL+93.65.5 pts · #5
- 3Stachowiak, BrunoPOL+80.89.0 pts · #1
Top rating losers
- 1Van Ams, JamesPOL-80.02.0 pts · #26
- 2Nowak, FranciszekPOL-56.42.0 pts · #30
- 3Polarczyk, PawelPOL-52.43.5 pts · #20
Biggest upsets
- R8+247 Elo gap
- R3+241 Elo gap
- R7+206 Elo gap