The 1st International Chess Tournament “Rustam Kasimdzhanov Cup” was played in Tashkent, Uzbekistan from 28th to 29th March 2023. It was a round robin with 10 players, including Alexander Grischuk, Parham Maghsoodloo, Shamsiddin Vokhidov, Nordibek Abdusattorov, Shakhriyar Mamedyarov, Javokhir Sindarov, Jakhongir Vakhidov, Rustam Kasimdzhanov, Nordibek Yakubboev, and Jorden Van Foreest.
Javokhir Sindarov won the event with 6,5/9, ahead of Parham Maghsoodloo with 6,0/9, Shamsiddin Vokhidov with 5,0/9, and Grischuk, Abdusattorov and Mamedyarov with 4,5/9
Final standings of Rustam Kasimdzhanov Cup 2023
| 1 | GM | Sindarov, Javokhir | UZB | 2578 | 6.5 |
| 2 | GM | Maghsoodloo, Parham | IRI | 2660 | 6 |
| 3 | GM | Vokhidov, Shamsiddin | UZB | 2514 | 5 |
| 4 | GM | Grischuk, Alexander | RUS | 2731 | 4.5 |
| 5 | GM | Abdusattorov, Nodirbek | UZB | 2714 | 4.5 |
| 6 | GM | Mamedyarov, Shakhriyar | AZE | 2703 | 4.5 |
| 7 | GM | Vakhidov, Jakhongir | UZB | 2513 | 4 |
| 8 | GM | Kasimdzhanov, Rustam | UZB | 2662 | 3.5 |
| 9 | GM | Yakubboev, Nodirbek | UZB | 2577 | 3.5 |
| 10 | GM | Van Foreest, Jorden | NED | 2682 | 3 |
