1st Rangamati International Open Chess Tournament - 2025

Open SwissStandard

53 players participated in this 6-round tournament, held from 27 Jun 2025 to 28 Jun 2025 in Rangamati, Bangladesh. 2 titled players. Top 10 Elo average was 1953, and top seed was Sarker Avik (🇧🇩 BAN, CM, 1990).

Mohammad Aminul Islam (🇧🇩 BAN, 1972) won with 5.5/6, ahead of Sk. Rashedul Hasan (5.5) and Md. Mujibur Rahman (5.0). Islam won on tie-break after catching the field in the final round.

The biggest upset came in round 6: Rahman Mirza Arifur (1830) beat Salim Md. Rabby (1960), a +130-point gap.

Location

🇧🇩Rangamati, Bangladesh

Dates

27 Jun 2025 → 28 Jun 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇧🇩CMSarker Avik1990

Avg top 10

1,953

Participants

Titled players · 2

CM×1

WCM×1

Federations · 1 represented

🇧🇩Bangladesh×39

Top 3

🥇
Mohammad Aminul Islam
🇧🇩BAN·1972
5.5pts·2253perf+28.6
🥈
Sk. Rashedul Hasan
🇧🇩BAN·1986
5.5pts·2245perf+25.8
🥉
Md. Mujibur Rahman
🇧🇩BAN·1895
5.0pts·2114perf+22.8

How it unfolded

Top 6 · 6 rounds

Tight race until R6; 2 players tied at 5.5/6, decided on Buchholz.

Co-leaders

Islam5.5Hasan5.5Rahman5Md.5Mohammad Shafiqul4.5Mirza Arifur4.5

R6 · TIEBREAK CLUSTER

2 players finish on 5.5/6. Islam takes the title on Buchholz Cut1 (20.5).

WIN STREAKS · 2 top finishers

Mohammad Aminul Islam 3 wins (R4–R6)Sk. Rashedul Hasan 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Mohammad Aminul Islam	*	—	½	—
2Sk. Rashedul Hasan	—	*	½	1
3Md. Mujibur Rahman	½	½	*	—
4Zakaria Md.	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Islam, Mohammad Aminul	1972	BAN	+22B	+14N	=3B	+6N	+11B	+21N	5.5	20.5	23.5	21.00	2253	+28.6
2	Hasan, Sk. Rashedul	1986	BAN	+24N	+26B	+4N	+9B	+21B	=3N	5.5	20.0	23.0	20.50	2245	+25.8
3	Rahman, Md. Mujibur	1895	BAN	+25N	+7B	=1N	+29B	+5N	=2B	5.0	22.5	25.0	19.50	2114	+22.8
4	Md., Zakaria	1911	BAN	+47B	+31N	−2B	+36N	+16B	+10N	5.0	17.5	18.5	13.00	2053	+14.6
5	Mohammad Shafiqul, Islam	1967	BAN	+17B	+23N	+10B	=8N	−3B	+7B	4.5	21.0	24.0	17.00	1985	+1.8
6	Mirza Arifur, Rahman	1830	BAN	+51B	=8B	+20N	−1B	+22N	+18N	4.5	19.5	20.0	12.50	2061	+24.6
7	Dibakar, Chakma	0	BAN	+11B	−3N	+37B	+23N	+19B	−5N	4.0	20.0	22.0	12.50	1926	0.0
8	Avik, SarkerCM	1990	BAN	+35B	=6N	+30B	=5B	=9N	=15N	4.0	19.5	21.5	13.00	1916	-8.8
9	Faisal, Hossain	1859	BAN	+41B	+33N	+18B	−2N	=8B	=19N	4.0	18.5	20.5	11.25	1962	+11.2
10	Islam, Sheik Md. Khairul	1885	BAN	+50B	+37N	−5N	+24B	+12N	−4B	4.0	18.5	19.5	10.00	1139	-17.0
11	Md., Matiur Rahman (mamun)	1968	BAN	−7N	+38B	+46N	+27B	−1N	+22B	4.0	17.5	18.5	9.00	1828	-6.6
12	Sumanta, Chakma	0	BAN	+?B	+15N	+19B	−21N	−10B	+23N	4.0	17.5	17.5	10.50	1888	0.0
13	FIDE 532023200	0	—	−14B	+17N	−31B	+35N	+27N	+24B	4.0	16.0	18.0	12.00	1753	0.0
14	Sujan, Chakma	1821	BAN	+13N	−1B	−29N	+49B	+46N	+25B	4.0	16.0	17.0	9.00	1066	-35.2
15	Md. Shaiful Azam, Chowdhury	1838	BAN	=38N	−12B	+40N	+28B	+29N	=8B	4.0	15.5	17.5	10.50	2068	+11.8
16	Ratnojoy, Tangchonga	1861	BAN	+49N	+40B	−21N	+32B	−4N	+34B	4.0	14.0	15.0	7.00	1116	-17.0
17	Dipen, Chakma	0	BAN	−5N	−13B	+51N	+48B	+32N	+31B	4.0	13.5	14.0	5.50	1167	0.0
18	Md. Rabby, Salim	1960	BAN	+28N	=29B	−9N	+30B	+20N	−6B	3.5	17.5	20.0	10.25	1824	-18.0
19	Dipankar, Chakma	1911	BAN	+42N	+27B	−12N	+31B	−7N	=9B	3.5	17.0	19.0	9.00	1965	+2.8
20	Alam, Md. Monjur	1941	BAN	+52B	=30N	−6B	+33N	−18B	+44N	3.5	14.0	14.0	4.75	1566	-27.8
21	Md Rabiul, Hossain	1920	BAN	+34N	F	+16B	+12B	−2N	−1B	3.0	21.0	21.0	10.00	1815	-8.4
22	Chakma, Shanti Moy	0	BAN	−1N	+51B	+44N	+26B	−6B	−11N	3.0	18.5	19.0	5.00	1702	0.0
23	Md, Sultan	1789	BAN	+32N	−5B	+25N	−7B	+41N	−12B	3.0	17.5	19.5	7.00	1167	-5.4
24	FIDE 532023081	0	—	−2B	+41N	+39B	−10N	+33B	−13N	3.0	17.5	19.5	6.00	1135	0.0
25	Krishna, Mongol Chakma	0	BAN	−3B	+?N	−23B	+37N	+36B	−14N	3.0	16.0	16.0	4.00	1702	0.0
26	Md Humayun Kabir, Shamol	1811	BAN	+39B	−2N	+42B	−22N	−34B	+38N	3.0	14.5	16.5	6.00	1186	-10.8
27	Fida, Rasul	1684	BAN	+44B	−19N	+47B	−11N	−13B	+48N	3.0	14.0	15.0	3.50	1140	-14.8
28	Gourab, Dewan	0	BAN	−18B	−39N	+45B	−15N	+51N	+32B	3.0	13.0	13.5	4.00	1099	0.0
29	Mohammad, Abu Mohsin	1760	BAN	+45B	=18N	+14B	−3N	−15B	−30N	2.5	19.0	20.5	7.25	1700	-8.2
30	Omnia Binta Yusuf, LubabaWCM	1729	BAN	F	=20B	−8N	−18N	+35B	+29B	2.5	15.5	15.5	6.25	1826	+16.8
31	FIDE 532023049	0	—	F	−4B	+13N	−19N	+40B	−17N	2.0	18.5	18.5	6.00	1111	0.0
32	FIDE 532023219	0	—	−23B	+52N	+35B	−16N	−17B	−28N	2.0	16.0	16.0	2.00	1025	0.0
33	FIDE 532023278	0	—	F	−9B	+34N	−20B	−24N	+41B	2.0	14.5	14.5	4.00	1100	0.0
34	Jeet, Chakma	0	BAN	−21B	+45N	−33B	F	+26N	−16N	2.0	13.5	14.5	4.50	1739	0.0
35	FIDE 532023073	0	—	−8N	+49B	−32N	−13B	−30N	+50B	2.0	13.5	14.5	2.00	1059	0.0
36	Md.jahangir, Alam	1706	BAN	+48N	−43B	+50N	−4B	−25N	−39B	2.0	13.0	14.0	2.00	1112	-9.6
37	FIDE 532023260	0	—	F	−10B	−7N	−25B	+50N	+49B	2.0	13.0	13.0	2.00	1084	0.0
38	Monik, Chakma	0	BAN	=15B	−11N	−?B	+?N	=44N	−26B	2.0	12.5	12.5	2.75	1496	0.0
39	Nizam, Uddin	0	BAN	−26N	+28B	−24N	−46B	F	+36N	2.0	12.0	13.0	5.00	1759	0.0
40	Shipon, Talukder	0	BAN	+?B	−16N	−15B	F	−31N	+46B	2.0	12.0	12.0	1.00	1660	0.0
41	Md, Moynul Hoque Rakib	0	BAN	−9N	−24B	+?B	+?N	−23B	−33N	2.0	12.0	12.0	0.00	1643	0.0
42	FIDE 532023146	0	—	−19B	+53N	−26N	−44B	−48N	+51B	2.0	9.5	9.5	0.50	1061	0.0
43	Rahman, Shahidur	1913	BAN	+46B	+36N	F	F	F	F	2.0	3.0	3.0	3.00	2507	+4.8
44	Shehzad, Shabib Ahmed	0	BAN	−27N	F	−22B	+42N	=38B	−20B	1.5	13.5	13.5	3.00	1013	0.0
45	FIDE 532023227	0	—	−29N	−34B	−28N	=51B	+?N	−?B	1.5	8.0	8.0	0.25	908	0.0
46	FIDE 532023138	0	—	−43N	F	−11B	+39N	−14B	−40N	1.0	14.0	14.0	2.00	1101	0.0
47	Koushik, Tanchangya	0	BAN	−4N	+48B	−27N	F	F	F	1.0	13.0	13.0	1.00	998	0.0
48	Sarit, Kumar Chakma	0	BAN	−36B	−47N	F	−17N	+42B	−27B	1.0	12.0	12.0	2.00	896	0.0
49	Md, Tazul Islam	0	BAN	−16B	−35N	F	−14N	+?B	−37N	1.0	12.0	12.0	0.00	1654	0.0
50	FIDE 532023162	0	—	−10N	+?N	−36B	F	−37B	−35N	1.0	12.0	12.0	0.00	996	0.0
51	FIDE 532023197	0	—	−6N	−22N	−17B	=45N	−28B	−42N	0.5	16.5	18.0	0.75	1030	0.0
52	FIDE 532023111	0	—	−20N	−32B	F	F	F	F	0.0	6.5	6.5	0.00	1141	0.0
53	FIDE 532021887	0	—	−?N	−42B	F	F	F	F	0.0	3.0	3.0	0.00	907	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Islam, Mohammad AminulBAN
+28.6
5.5 pts · #1
2Hasan, Sk. RashedulBAN
+25.8
5.5 pts · #2
3Mirza Arifur, RahmanBAN
+24.6
4.5 pts · #9

Top rating losers

1Sujan, ChakmaBAN
-35.2
4.0 pts · #34
2Alam, Md. MonjurBAN
-27.8
3.5 pts · #27
3Md. Rabby, SalimBAN
-18.0
3.5 pts · #10

Biggest upsets

R6+130 Elo gap
Mirza Arifur, Rahman1830 beat Md. Rabby, Salim1960
R3+111 Elo gap
Mirza Arifur, Rahman1830 beat Alam, Md. Monjur1941
R3+101 Elo gap
Faisal, Hossain1859 beat Md. Rabby, Salim1960