The previous round had left us with ten leaders on a perfect score. As six of them parted amicably, we were left with two decisive results. IM Khuong Duy Dau defeated his colleague Suresh Harsh after the latter dropped an exchange in time trouble after enduring some positional pressure. On board two, GM Ido Gorshtein parted with his fianchettoed Bishop early on, setting the scene for some interesting developments.
1. Nf3 Nf6 2. g3 g6 3. c4 Bg7 4. Bg2 O-O 5. O-O c5 6. d4 d6 7. dxc5 dxc5 8. Ne5 Nfd7 9. Nd3 Nc6 10. Bxc6 bxc6 11. Qc2 Ne5 12. Nxe5 Bxe5 13. Bh6 Re8 14. Nc3 Qd4 15. Na4 Bf5 16. Qc1 Be6 17. b3 [Diagr]

17… Qxa1 18. Qxa1 Bxa1 19. Rxa1 f6 20. Bd2 h5 21. f3 g5 22. Ba5 Kf7 23. Nxc5 Rh8 24. e4 Rag8 25. Re1 g4 26. f4 h4 27. f5 Bc8 28. Bc7 hxg3 29. hxg3 Rh5 30. a4 Rgh8 31. Re2 e6 32. fxe6+ Bxe6 33. Nd3 Rh1+ 34. Kf2 Rb1 35. Nc5 Rh5 36. e5 f5 37. Ke3 Rh3 38. Rd2 Rxg3+ 39. Kf4 Rf3+ 40. Kg5 g3 41. Nxe6 Kxe6 42. Rd6+ Kf7 43. Rd7+ Ke8 44. Rd2 Rbxb3 0-1
With this result, IM Santosh Ajay becomes co-leader with Dau – a duo which in all fairness wasn’t on many bingo cards when we started the round. These two U-18 talents will face one another in the marquis match-up of round 5, with a peloton of players on 3,5/4 including grandmasters Short, Van Wely, Zhao and Ganguly in pursuit.
In the challengers section, WFM Astrid Barbier continued her march on board one with a convincing win over local player Poompat. A veteran of the BCC Open, he candidly admitted to being outplayed in an opening of which he did not quite grasped all the intricacies. Four players share a maximum score of 4 out of 4 – Barrier, Danushka, Adalja and Gutsulyak.


















- Photos: Kwang Ng for Bangkok Chess Club
- Games from the top 24 boards: https://lichess.org/broadcast/23rd-bangkok-chess-club-open-2026/mu6Kv85k
- Picture database: https://m.piufoto.com/album/9e2ab6d12f3bf3542c9a22e64b6dc012/
- Results & pairings (Masters): https://s3.chess-results.com/tnr1334185.aspx?lan=1&art=0&flag=30&SNode=S0&tno=1334185&zeilen=99999
- Results & pairings (Challenger): https://s1.chess-results.com/tnr1334184.aspx?lan=1&art=0&flag=30&SNode=S0




















































