49th National 'B' Chess Championship 2025

SwissStandard

54 players participated in this 9-round tournament, held from 05 Sept 2025 to 13 Sept 2025 in Dhaka, Bangladesh. 27 titled players. Top 10 Elo average was 2227, and top seed was Biswas Subrota (🇧🇩 BAN, FM, 2338).

Tahsin Tajwar Zia (🇧🇩 BAN, FM, 2334) won with 7.5/9, ahead of Shakil Abu Sufian (7.0) and Sajid Sakline Mostafa (6.5). Zia shared the lead from round 7 and won solo starting round 8.

The biggest upset came in round 1: Rani Hamid (WIM, 1803) beat Eftekhar Alam Md (2026), a +223-point gap.

Location

🇧🇩Dhaka, Bangladesh

Dates

05 Sept 2025 → 13 Sept 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇧🇩FMBiswas Subrota2338

Avg top 10

2,227

Participants

Titled players · 27

IM×2

FM×11

CM×10

WIM×2

WFM×2

Federations · 1 represented

🇧🇩Bangladesh×54

Top 3

🥇
FMTahsin Tajwar Zia
🇧🇩BAN·2334
7.5pts·2430perf+20.4
🥈
IMShakil Abu Sufian
🇧🇩BAN·2217
7.0pts·2378perf+18.0
🥉
FMSajid Sakline Mostafa
🇧🇩BAN·2269
6.5pts·2347perf+19.6

How it unfolded

Top 6 · 9 rounds

FM Tahsin Tajwar Zia led from R4; +0.5-point edge over the runner-up.

Co-leaders

Zia7.5Abu Sufian7Subrota6.5Uddin6.5Sakline Mostafa6.5Islam6

R5 · LEADER CHANGE09 Sept

FM Biswas Subrota takes the sole lead (4.5/5).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

FM Tahsin Tajwar Zia drew with IM Shakil Abu Sufian (White).

WIN STREAKS · 2 top finishers

FM Tahsin Tajwar Zia 4+3 wins (R1–R4, R7–R9)FM Biswas Subrota 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMTahsin Tajwar Zia	*	½	0	—
2IMShakil Abu Sufian	½	*	—	½
3FMBiswas Subrota	1	—	*	½
4IMMd Minhaz Uddin	—	½	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Zia, Tahsin TajwarFM	2334	BAN	+36N	+29B	+21N	+3B	−5N	=2B	+22N	+8B	+11N	7.5	45.0	48.5	38.50	2430	+20.4
2	Abu Sufian, ShakilIM	2217	BAN	+52B	+7N	=8B	+25N	=4B	=1N	=3B	+9N	+6B	7.0	49.0	50.0	36.75	2378	+18.0
3	Sakline Mostafa, SajidFM	2269	BAN	+24B	+11N	+10B	−1N	+6B	+5B	=2N	=4N	=7B	6.5	51.5	56.0	38.75	2347	+19.6
4	Md Minhaz UddinIM	2255	BAN	+17N	+22B	+6N	=5B	=2N	=21B	+13N	=3B	=10N	6.5	47.0	51.5	36.25	2335	+9.8
5	Subrota, BiswasFM	2338	BAN	+35B	+43N	+9B	=4N	+1B	−3N	+21B	−6N	+18N	6.5	45.5	48.5	32.75	2337	+2.0
6	Md., Sharif HossainFM	2135	BAN	+19B	+26N	−4B	+36N	−3N	+35B	+18N	+5B	−2N	6.0	44.5	48.0	28.00	2241	+25.2
7	Mohammed, Shaker UllahCM	2088	BAN	+54N	−2B	+23N	=17B	=18N	=16B	+15N	+13B	=3N	6.0	43.5	43.5	25.75	2177	+42.0
8	Md Abu HanifCM	2109	BAN	+20B	+32N	=2N	=15B	−21N	+23B	+28B	−1N	+19B	6.0	43.0	47.0	29.00	2171	+15.4
9	Islam, Khandaker AminulFM	2189	BAN	+23N	+30B	−5N	+38B	=22N	+15B	=11N	−2B	+16N	6.0	42.5	46.0	27.25	2209	+5.8
10	Anata, Choudhury	2152	BAN	+41N	+16B	−3N	+35B	=15N	−22B	+25N	+17B	=4B	6.0	40.5	44.0	27.25	2186	+8.4
11	Mohammad, JavedFM	2100	BAN	+45B	−3B	+52N	=14N	+24B	+40N	=9B	+21N	−1B	6.0	40.5	41.5	21.75	2240	+33.6
12	Ahmed, ShafiqCM	2101	BAN	−26N	+19B	−17N	−16B	+51N	+41B	+23N	+22B	+20N	6.0	37.0	38.0	23.50	2094	-1.6
13	Rahman, Syed MahfuzurFM	2134	BAN	−15N	+53B	+39B	=24N	+14B	+27N	−4B	−7N	+21B	5.5	40.0	40.5	20.75	2135	+0.8
14	Jodunath, Biswas	1985	BAN	−49N	+33B	+30N	=11B	−13N	−29B	+39N	+25B	+22N	5.5	36.0	37.5	23.50	2162	+43.4
15	Amit Bikram, Roy	1962	BAN	+13B	=40N	+27B	=8N	=10B	−9N	−7B	+30B	=17N	5.0	43.0	46.5	24.25	2153	+45.2
16	Wadifa, AhmedWIM	1938	BAN	+37B	−10N	−18B	+12N	+31B	=7N	=27B	+28N	−9B	5.0	42.0	45.5	23.25	2128	+89.6
17	Ahmed, MahtabuddinCM	2007	BAN	−4B	+47N	+12B	=7N	−27B	+24N	+40B	−10N	=15B	5.0	42.0	43.5	21.00	2120	+26.4
18	Md. Masum, HossainCM	2041	BAN	+50B	−21B	+16N	=40N	=7B	+20N	−6B	+34N	−5B	5.0	40.5	42.0	20.25	2110	+15.4
19	Noshin, AnjumWFM	1964	BAN	−6N	−12N	+51B	+33B	+38N	−25B	+43N	+29B	−8N	5.0	37.0	38.0	15.50	2113	+35.4
20	Abu Huraira, , Sowrab	1957	BAN	−8N	−31B	+45N	+29B	+39N	−18B	+37B	+27N	−12B	5.0	36.5	39.0	18.00	2087	+31.2
21	Ahmed, Sheikh NasirFM	2184	BAN	+28B	+18N	−1B	+31N	+8B	=4N	−5N	−11B	−13N	4.5	47.5	51.5	22.75	2148	-8.6
22	Md. Sajidul, HaqueCM	2083	BAN	+47B	−4N	+28B	+32N	=9B	+10N	−1B	−12N	−14B	4.5	46.0	47.5	19.00	2077	-1.6
23	Tutul , DharCM	2001	BAN	−9B	+51N	−7B	+44N	+37B	−8N	−12B	+32N	=28B	4.5	39.0	40.0	13.75	2008	+2.0
24	Ahmed, Feroz	2009	BAN	−3N	+45B	+29N	=13B	−11N	−17B	+33N	F	+42B	4.5	37.0	37.0	16.75	2115	+22.6
25	Avik, SarkerCM	2037	BAN	=44N	+46B	+49N	−2B	−40B	+19N	−10B	−14N	+34B	4.5	36.0	37.5	14.00	2030	-1.2
26	Islam, M.M. Zahirul	1929	BAN	+12B	−6B	−31N	−37N	+44B	=30B	=38N	+43N	=27B	4.5	34.5	37.5	18.00	2053	+29.6
27	Rayan Rashid Mugdho	2070	BAN	=46N	+48B	−15N	+49B	+17N	−13B	=16N	−20B	=26N	4.5	33.5	35.0	13.75	1982	-42.4
28	Md Nasir Uddin	1995	BAN	−21N	+50B	−22N	+48B	+30N	+43B	−8N	−16B	=23N	4.5	33.0	34.5	12.25	2025	+7.4
29	Swarnavo Choudhury	2104	BAN	+34B	−1N	−24B	−20N	+46B	+14N	+32B	−19N	F	4.0	37.5	37.5	15.50	1983	-25.2
30	Tashriq Saihan, Shan	2067	BAN	+51B	−9N	−14B	+34N	−28B	=26N	+42B	−15N	=33N	4.0	37.0	38.0	12.75	1949	-55.6
31	Md, Eftekhar Alam	2026	BAN	−32B	+20N	+26B	−21B	−16N	−37N	−41B	+51N	+44B	4.0	33.0	34.0	13.50	1909	-27.2
32	Hamid, RaniWIM	1803	BAN	+31N	−8B	+46N	−22B	−35N	+36B	−29N	−23B	+47N	4.0	32.0	33.5	11.00	1970	+37.4
33	Mohammed Abdul, MalekFM	2107	BAN	−39B	−14N	+42B	−19N	=47B	+46N	−24B	+36N	=30B	4.0	31.5	33.0	11.75	1924	-43.2
34	Faisal, Hossain	1933	BAN	−29N	−36B	+53N	−30B	+50N	+38B	+35N	−18B	−25N	4.0	29.5	30.0	9.00	1978	+11.4
35	Afnan, Zarif Haque	2021	BAN	−5N	+42B	+43B	−10N	+32B	−6N	−34B	=41N	F	3.5	36.5	36.5	12.25	2007	-9.2
36	Hasan, Sk. Rashedul	2013	BAN	−1B	+34N	+37B	−6B	−43N	−32N	+44B	−33B	=38N	3.5	35.5	38.5	12.25	1963	-13.2
37	Bhuiyan, Golam Mostafa	2105	BAN	−16N	+41B	−36N	+26B	−23N	+31B	−20N	F	=45B	3.5	32.5	32.5	13.25	1924	-39.6
38	Chowdhury, SohelCM	2052	BAN	=48N	+44B	=40B	−9N	−19B	−34N	=26B	=45N	=36B	3.5	32.0	33.5	10.75	1895	-38.2
39	Tanvir, Alam	1945	BAN	+33N	=49B	−13N	−43B	−20B	+47N	−14B	−42N	+48N	3.5	29.5	31.0	7.75	1938	-2.8
40	Nayem, HaqueFM	2170	BAN	+53N	=15B	=38N	=18B	+25N	−11B	−17N	F	F	3.5	29.5	29.5	11.75	2027	-26.6
41	Md. Ratan, Ali	1973	BAN	−10B	−37N	=47B	=42N	+48B	−12N	+31N	=35B	F	3.5	29.5	29.5	9.75	1971	-1.4
42	Md, Sahrifuzzaman	1955	BAN	−43B	−35N	−33N	=41B	+53N	+45B	−30N	+39B	−24N	3.5	28.5	29.0	8.25	1933	-5.6
43	Warsia, KhusbuWFM	2108	BAN	+42N	−5B	−35N	+39N	+36B	−28N	−19B	−26B	F	3.0	34.5	34.5	10.50	1933	-79.2
44	Md, Sultan	1810	BAN	=25B	−38N	=48N	−23B	−26N	+51B	−36N	+46B	−31N	3.0	28.0	29.0	6.00	1840	+6.2
45	Asaduzzaman, Ahad	1896	BAN	−11N	−24N	−20B	=53B	F	−42N	+47B	=38B	=37N	2.5	28.0	28.0	5.25	1866	-6.6
46	S.m., Kotaiba Biplob	1879	BAN	=27B	−25N	−32B	=47N	−29N	−33B	F	−44N	+51B	2.0	26.5	26.5	4.00	1768	-23.6
47	Md. Sultan Byzid, Amin	1884	BAN	−22N	−17B	=41N	=46B	=33N	−39B	−45N	F	−32B	1.5	29.0	29.0	4.75	1710	-33.8
48	Shadip, Khanti Dey	1871	BAN	=38B	−27N	=44B	−28N	−41N	=50B	−51N	F	−39B	1.5	25.0	25.5	4.00	1697	-33.6
49	Mehdi Hasan ParagFM	2160	BAN	+14B	=39N	−25B	−27N	F	F	F	F	F	1.5	18.0	18.0	7.25	1922	-25.8
50	Hamidul, Haque	1862	BAN	−18N	−28N	F	−52B	−34B	=48N	+53B	F	F	1.5	16.5	16.5	1.25	1779	-12.4
51	Md Foajul, Islam	1873	BAN	−30N	−23B	−19N	F	−12B	−44N	+48B	−31B	−46N	1.0	30.0	30.0	1.50	1643	-41.0
52	Zoar Haque, ProdhanCM	2002	BAN	−2N	F	−11B	+50N	F	F	F	F	F	1.0	14.5	14.5	1.50	1935	-5.8
53	Siam, Chowdhury	1991	BAN	−40B	−13N	−34B	=45N	−42B	F	−50N	F	F	0.5	22.0	22.0	1.25	1591	-100.4
54	Md Zakir , Hossain	1896	BAN	−7B	F	F	F	F	F	F	F	F	0.0	7.0	7.0	0.00	1288	-5.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Wadifa, AhmedWIMBAN
+89.6
5.0 pts · #18
2Amit Bikram, RoyBAN
+45.2
5.0 pts · #20
3Jodunath, BiswasBAN
+43.4
5.5 pts · #14

Top rating losers

1Siam, ChowdhuryBAN
-100.4
0.5 pts · #53
2Warsia, KhusbuWFMBAN
-79.2
3.0 pts · #43
3Tashriq Saihan, ShanBAN
-55.6
4.0 pts · #30

Biggest upsets

R1+223 Elo gap
WIMHamid, Rani1803 beat Md, Eftekhar Alam2026
R6+210 Elo gap
WIMHamid, Rani1803 beat Hasan, Sk. Rashedul2013
R8+203 Elo gap
FMMd., Sharif Hossain2135 beat FMSubrota, Biswas2338