Posle 3. kola na turniru su sedmorica igrača u vođstvu, među kojima su velemajstor Mladen Palac, zatim IM Srđan Šale, IM Zdenko Plenković, IM Sven Tica i IM Mazi Leon, kao i belgijski FM Roos Adrian.
Bacetic,Marin (2045) – Tica,Sven (2387) [E11]
Split Open 2021 (2), 01.08.2021
1.d4 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Bb4+ 5.Bd2 Be7 6.Nf3 c6 7.Qc2 b6 8.cxd5 cxd5 9.Nc3 0–0 10.Nb5 a6 11.Nc3 Bb7 12.Ne5 Nbd7 13.Nd3 Rc8 14.0–0 Ne4 15.Rac1 b5 16.Qd1 Qb6 17.e3 b4 18.Nxe4 dxe4 19.Nf4 e5 20.dxe5 Nxe5 21.Qe2 g5 22.Nh5 Qe6 23.h3 Qxa2 24.Bxb4 Bxb4 25.Nf6+ Kg7 26.Nxe4 Rxc1 27.Rxc1 Bxe4 28.Bxe4 Qe6 29.f4 Nd7 30.Qd3 Nf6 31.Bf5

31…Rd8 32.Bxe6 Rxd3 0–1
Kolednjak,Tomislav (2041) – Mis,Mieszko (2361) [E27]
Split Open 2021 (2), 01.08.2021
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 0–0 5.a3 Bxc3+ 6.bxc3 Nh5 7.Nh3 f5 8.e4 d6 9.Bg5 Qe8 10.Bd3 f4 11.e5 h6 12.Bh4 g5 13.Nxg5 Qe7 14.Bh7+ Kg7 15.Qd3 hxg5 16.Qg6+ Kh8 17.Qh6

17…Qg7 18.Qxh5 Qxh7 19.Qxg5 Nc6 20.0–0–0 Bd7 21.Rhe1 Rf5 22.Qg4 0–1
Radic,Goran (2035) – Mazi,Leon (2340) [D00]
Split Open 2021 (2), 01.08.2021
1.d4 Nf6 2.Nc3 d5 3.Bf4 Bf5 4.e3 e6 5.a3 Be7 6.Nf3 0–0 7.Be2 c5 8.Ne5 h6 9.g4 Bh7 10.h4 Nfd7 11.g5 Nxe5 12.dxe5 d4 13.exd4 cxd4 14.Nb5 Qd5 15.Rg1 hxg5 16.Bxg5 Bxg5 17.Rxg5 Nc6 18.Qd2 Nxe5 19.0–0–0 Rac8 20.Nxd4 Qa2 21.Qb4 f6 22.Rg3 Rfd8 23.Rc3 Nc6 24.Qxb7 Nxd4 25.Rxd4

25…Qa1+ 26.Kd2 Rxd4+ 27.Bd3 Rcd8 28.Rc8 Bxd3 0–1
10th International Chess Tournament „Split Open 2021“
| Organizator(i) | Chess Club „Brda“ |
| Savez | Croatia ( CRO ) |
| Direktor turnira | Ivić Mateo +385 091 6400 589 |
| Glavni sudac | Vladimir Cvetnić IA [14516950] |
| Deputy Arbiter | Denis Brulić FA [14506670] |
| Sudac | Marko Šekelja NA [14527340], Ante Tomaš NA [14530929] |
| Bedenkzeit | 90 minuta + 30 sekundi |
| Number of rounds | 9 |
| Tournament type | Švicarac |
| Rating calculation | Nacionalni rejting, Međunarodni rejting |
| Datum | 2021/07/31 do 2021/08/07 |
| Prosječan rejting | 1841 |
2. Kolo na 2021/08/01 kod 10.00
| Bo. | Ime | Rtg | Rezultat | Ime | Rtg | ||
| 1 | Škrbec Leon | 2066 | ½ – ½ | GM | Zelčić Robert | 2536 | |
| 2 | GM | Palac Mladen | 2525 | 1 – 0 | WFM | Špiranec Noemi | 2088 |
| 3 | Kejžar Petra | 2051 | 0 – 1 | IM | Šale Srdjan | 2411 | |
| 4 | FM | Cukrowski Filip | 2389 | 1 – 0 | Golbach Floris | 2057 | |
| 5 | MK | Bačetić Marin | 2045 | 0 – 1 | IM | Tica Sven | 2387 |
| 6 | Kozak Antoni | 2375 | 1 – 0 | WCM | Murawko Katarzyna | 2046 | |
| 7 | I | Kolednjak Tomislav | 2041 | 0 – 1 | FM | Mis Mieszko | 2361 |
| 8 | IM | Plenković Zdenko | 2358 | 1 – 0 | Elier Ali | 2045 | |
| 9 | MK | Radić Goran | 2035 | 0 – 1 | IM | Mazi Leon | 2340 |
| 10 | WFM | Shvedova Alexandra | 2025 | ½ – ½ | FM | Lund Gunnar | 2312 |
| 11 | FM | Roos Adrian | 2303 | 1 – 0 | MK | Mihalić Goran | 2039 |
| 12 | Ponomarev Maximilian | 2017 | 0 – 1 | FM | Muha Miljenko | 2290 | |
| 13 | FM | Čupić Lovro | 2271 | 1 – 0 | MK | Trošelj Ivan | 2030 |
| 14 | IM | Armanda Ivica | 2253 | 1 – 0 | MK | Vučenović Damian | 2025 |
| 15 | MK | Džaja Martin Zorislav | 2010 | 0 – 1 | FM | Polok Kacper | 2245 |
| 16 | FM | Stočko Josip | 2231 | 1 – 0 | MK | Glavičić Tino | 2014 |
| 17 | Beck Gerald | 1983 | 0 – 1 | FM | Piskur Mitja | 2231 | |
| 18 | Caruso Augusto | 2193 | ½ – ½ | Van Der Veen Ronald | 2003 | ||
| 19 | I | Alfirević Duje | 1976 | 0 – 1 | Smolka Marcin | 2189 | |
| 20 | WIM | Berke Ana | 2181 | 1 – 0 | Javornik Nik | 1983 |
Itd.
3. Kolo na 2021/08/01 kod 18.00
Itd.
Poredak nakon kola 3
| Mj. | Ime | spol | FED | RtgI | Bod. | |
| 1 | GM | Palac Mladen | CRO | 2525 | 3,0 | |
| 2 | IM | Šale Srdjan | CRO | 2411 | 3,0 | |
| IM | Tica Sven | CRO | 2387 | 3,0 | ||
| IM | Mazi Leon | SLO | 2340 | 3,0 | ||
| FM | Roos Adrian | BEL | 2303 | 3,0 | ||
| FM | Polok Kacper | POL | 2245 | 3,0 | ||
| 7 | IM | Plenković Zdenko | CRO | 2358 | 3,0 | |
| 8 | FM | Mis Mieszko | POL | 2361 | 2,5 | |
| WFM | Teuschler Barbara | w | AUT | 2148 | 2,5 | |
| 10 | Kozak Antoni | POL | 2375 | 2,5 | ||
| 11 | GM | Zelčić Robert | CRO | 2536 | 2,5 | |
| 12 | FM | Čupić Lovro | CRO | 2271 | 2,5 | |
| Smolka Marcin | POL | 2189 | 2,5 | |||
| FM | Palchuk Andrii | UKR | 2174 | 2,5 | ||
| Minko Dmitry | RUS | 2136 | 2,5 | |||
| 16 | FM | Stočko Josip | CRO | 2231 | 2,5 | |
| 17 | Verheyen Olivier | BEL | 2179 | 2,5 | ||
| WFM | Purgar Ivona | w | CRO | 2166 | 2,5 | |
| 19 | MK | Jakrlin Mihael | CRO | 2120 | 2,5 | |
| 20 | Caruso Augusto | ITA | 2193 | 2,5 | ||
| Pronk Sven | NED | 2107 | 2,5 | |||
| 22 | MK | Šarić Luka | CRO | 2158 | 2,5 | |
| 23 | FM | Cukrowski Filip | POL | 2389 | 2,5 | |
| FM | Muha Miljenko | CRO | 2290 | 2,5 | ||
| IM | Armanda Ivica | CRO | 2253 | 2,5 | ||
| Olenik Campa Rudi | SLO | 2172 | 2,5 | |||
| Lutsko Artem | UKR | 2147 | 2,5 | |||
| 28 | Kowalec Maciej | POL | 2128 | 2,5 | ||
| 29 | MK | Čotić Borna | CRO | 2159 | 2,5 |
itd.
Chess-Results Server Chess-results.com – 10th International Chess Tournament „Split Open 2021“