Ukrainian IM Svyatoslav Bazakutsa moved into sole first place at the British Chess Championship after defeating nine-time champion Michael Adams in Tuesday's fourth round. The 18-year-old sixth seed is the only player in the 109-player field to retain a perfect score, having won all four of his games.
Playing white, Bazakutsa outplayed Adams in a slow strategic battle arising from an English Opening, as he made good use of the initiative in a queenless manoeuvring battle.
The youngster eventually reached a rook ending with an extra pawn, although engines assessed the position as equal.
Adams defended for a long time, but eventually faltered in the technical ending. Bazakutsa took full advantage of the error and converted the position into a memorable win.

Svyatoslav Bazakutsa during round three | Photo: Yury Krylov
Five players are half a point behind the leader on 3½/4: Shreyas Royal, Harry Grieve, Marcus Harvey, Yichen Han and 11-year-old Bodhana Sivanandan. Sivanandan joined the chasing group with an upset victory as black against fifth seed Ameet Ghasi.
The game reached a symmetrical position in the early middlegame, but a couple of timid moves by Ghasi allowed Sivanandan to seize the initiative. She then converted her strategic advantage into a win in remarkably precise fashion. Her 3½/4 performance has earned her 20.2 rating points after four rounds.

Ahmeet Ghasi resigns the game against Bodhana Sivanandan | Photo: Yury Krylov

Shreyas Royal, the youngest player to achieve the grandmaster title in British history, defeated 12-year-old prodigy Supratit Banerjee on Tuesday | Photo: Yury Krylov
| Rk. | Name | Rtg | TB1 | ||
|---|---|---|---|---|---|
| 1 | IM | Bazakutsa, Svyatoslav | 2488 | 4 | |
| 2 | GM | Royal, Shreyas | 2514 | 3,5 | |
| 3 | IM | Grieve, Harry | 2508 | 3,5 | |
| 4 | IM | Harvey, Marcus R | 2470 | 3,5 | |
| 5 | IM | Han, Yichen | 2421 | 3,5 | |
| 6 | FM | Sivanandan, Bodhana | 2338 | 3,5 | |
| 7 | GM | Mcshane, Luke J | 2597 | 3 | |
| 8 | GM | Adams, Michael | 2595 | 3 | |
| 9 | IM | Czopor, Maciej | 2455 | 3 | |
| 10 | IM | Waldhausen Gordon, Frederick | 2455 | 3 | |
| 11 | IM | Roberson, Peter T | 2439 | 3 | |
| 12 | GM | Williams, Simon K | 2438 | 3 | |
| 13 | IM | Pert, Richard G | 2410 | 3 | |
| 14 | FM | Chow, Sam | 2381 | 3 | |
| 15 | GM | Hebden, Mark L | 2345 | 3 | |
| 16 | FM | Badacsonyi, Stanley | 2320 | 3 | |
| 17 | IM | Ledger, Andrew J | 2312 | 3 | |
| 18 | FM | Han, Qixiang | 2239 | 3 | |
| 19 | GM | Ghasi, Ameet K | 2494 | 2,5 | |
| 20 | IM | Willow, Jonah B | 2459 | 2,5 | |
| 21 | IM | Mahadevan, Siva | 2447 | 2,5 | |
| 22 | GM | Gordon, Stephen J | 2429 | 2,5 | |
| 23 | GM | Mcdonald, Neil R | 2399 | 2,5 | |
| 24 | IM | Kanyamarala, Tarun | 2398 | 2,5 | |
| 25 | IM | Jackson, James P | 2377 | 2,5 |