48th All Assam U-15 Open Chess Championship

Open SwissStandard

90 players participated in this 7-round tournament, held from 10 May 2025 to 12 May 2025 in Ramnagar, India. Top 10 Elo average was 1661, and top seed was Koshin Das (🇮🇳 IND, 1786).

Bhargab Debnath (🇮🇳 IND, 1705) won with 6.0/7, ahead of Nikhil Kumar (6.0) and Pratik Kanti Paul (6.0). Debnath won on tie-break after catching the field in the final round.

The biggest upset came in round 6: Subhradeep Roy (1566) beat Koshin Das (1786), a +220-point gap.

Location

🇮🇳Ramnagar, India

Dates

10 May 2025 → 12 May 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 7 rounds

Top seed

🇮🇳Koshin Das1786

Avg top 10

1,661

Participants

Federations · 1 represented

🇮🇳India×61

Top 3

🥇
Bhargab Debnath
🇮🇳IND·1705
6.0pts·1881perf+46.8
🥈
Nikhil Kumar
🇮🇳IND·1764
6.0pts·1880perf+32.4
🥉
Pratik Kanti Paul
🇮🇳IND·1593
6.0pts·1815perf+55.6

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 3 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 3 at the finish.

Co-leaders

Debnath6Kumar6Paul6Sarma5.5Borgohain5.5Barman5.5

R7 · TIEBREAK CLUSTER

3 players finish on 6.0/7. Debnath takes the title on Buchholz Cut1 (30.0).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Bhargab Debnath drew with Nikhil Kumar (Black).

WIN STREAKS · 3 top finishers

Bhargab Debnath 4 wins (R1–R4)Nikhil Kumar 5 wins (R1–R5)Pratik Kanti Paul 3+3 wins (R1–R3, R5–R7)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Bhargab Debnath	*	½	1	—
2Nikhil Kumar	½	*	—	1
3Pratik Kanti Paul	0	—	*	—
4Bhavarnav Sarma	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Bhargab Debnath	1705	IND	+76B	+32N	+10B	+3N	=4B	=2N	+43B	6.0	30.0	32.0	26.25	1881	+46.8
2	Nikhil Kumar	1764	IND	+86N	+45B	+5N	+15B	+13N	=1B	=8B	6.0	29.0	29.0	23.50	1880	+32.4
3	Pratik Kanti Paul	1593	IND	+75N	+22B	+17N	−1B	+20N	+26B	+9N	6.0	28.5	30.5	24.50	1815	+55.6
4	Aditya Kiran Borgohain	1648	IND	+82B	+7N	+6B	=8N	=1N	+15B	=5N	5.5	32.0	33.0	24.75	1749	+30.4
5	Bhavarnav Sarma	1557	IND	+87B	+23N	−2B	+21N	+39B	+18N	=4B	5.5	29.0	29.0	20.25	1772	+66.4
6	Ayushman Barman	1523	IND	+84N	+46B	−4N	=31B	+28N	+22B	+16N	5.5	26.0	27.0	19.50	1607	+17.6
7	Anirban Das	1443	IND	+53N	−4B	+62N	=43B	+71N	+14B	+30N	5.5	23.5	26.0	18.75	1678	+48.8
8	Subhradeep Roy	1566	IND	F	+12B	+26N	=4B	+11N	+13B	=2N	5.0	30.0	30.0	24.25	1865	+73.6
9	Samujjal Baruah	1634	IND	+41B	+21N	+70B	−13B	+14N	+10N	−3B	5.0	28.5	31.0	20.50	1696	+19.2
10	Eshan Tanti	1531	IND	+83N	+55B	−1N	+12B	+34N	−9B	+26N	5.0	27.0	28.0	17.00	1560	+8.0
11	Abhijit Barbhuiya	1519	IND	+56B	+54N	+43B	=33N	−8B	=16N	+32B	5.0	24.0	27.0	17.75	1595	+24.8
12	Faheem Ayaan Ahmed	1422	IND	+60B	−8N	+68B	−10N	+59B	+70N	+27B	5.0	23.0	25.5	15.50	1541	+25.6
13	Koshin Das	1786	IND	+78B	+35N	+27B	+9N	−2B	−8N	=19B	4.5	28.5	30.5	17.25	1647	-38.4
14	Guruttam Borah	1569	IND	+80B	+16N	=33B	+25N	−9B	−7N	+49B	4.5	27.0	28.5	16.00	1504	-16.0
15	Abhishek Bordoloi	1525	IND	+49B	+61N	+18B	−2N	+44B	−4N	=45B	4.5	26.5	29.5	16.25	1615	+23.2
16	Sashwat Spandan Bora	1421	IND	+67N	−14B	+58N	+70B	+17N	=11B	−6B	4.5	25.5	28.0	15.50	1524	+28.0
17	Sattwik Nath	1503	IND	+77B	+57N	−3B	+23N	−16B	+56N	=21B	4.5	25.5	27.5	14.75	1385	-27.2
18	Monodeep Dhar	1694	IND	+88N	+47B	−15N	+28B	+45N	−5B	=20N	4.5	25.5	25.5	13.25	1501	-49.6
19	Adarsh Debnath	1501	IND	+42B	=29N	=25B	=37N	+36B	=27N	=13N	4.5	25.0	29.0	18.50	1617	+15.6
20	Abhinav Deb	1457	IND	+59B	−43N	+69B	+29N	−3B	+37N	=18B	4.5	25.0	28.0	16.25	1372	-10.8
21	Neehar Das	1440	IND	+58N	−9B	+53N	−5B	+74N	+29B	=17N	4.5	25.0	27.0	14.25	1292	-20.0
22	Syed Mehdi	1442	IND	+90B	−3N	+54B	=27N	+72B	−6N	+44B	4.5	24.5	24.5	11.00	1449	-26.4
23	Abhirup Deb	1414	IND	+71N	−5B	+67N	−17B	+62N	=48B	+50N	4.5	23.0	25.5	13.75	1242	-26.4
24	Nihal Mazumder	1533	IND	+66N	=38B	−28N	=40B	=50N	+51B	+47N	4.5	22.5	25.5	15.75	1634	+10.0
25	Kanakraj Dhar	1404	IND	+73N	+30B	=19N	−14B	−43N	+71B	+48N	4.5	22.5	25.0	14.75	1536	+4.4
26	Syed Ifraz Ubaid	0	IND	+?B	+39N	−8B	+32N	+33B	−3N	−10B	4.0	28.0	28.0	12.00	1526	0.0
27	Jishnu Ranjan Das	1556	IND	+89N	+31B	−13N	=22B	+38N	=19B	−12N	4.0	26.5	26.5	12.50	1518	-10.8
28	Ng Randiv Singha	0	IND	=44B	+36N	+24B	−18N	−6B	=35N	+63B	4.0	26.0	29.0	15.25	1475	0.0
29	Yash Chakraborty	0	IND	+?N	=19B	=30N	−20B	+42B	−21N	+56B	4.0	24.5	24.5	11.25	1276	0.0
30	Shaan Mazumdar	1532	IND	+65B	−25N	=29B	=61N	+54B	+34N	−7B	4.0	24.0	27.0	13.50	1350	-19.2
31	Dibyajyoti Tantubay	1415	IND	+37B	−27N	+59B	=6N	+35B	−43N	=70B	4.0	24.0	26.5	15.00	1478	+16.0
32	Sudipto Paul	1458	IND	+62N	−1B	+74N	−26B	+69N	+57B	−11N	4.0	24.0	26.0	11.00	811	-26.4
33	Partha Pratim Dey	1502	IND	F	+50B	=14N	=11B	−26N	+55B	+40N	4.0	24.0	24.0	15.25	1535	+3.6
34	Syed Ibraheem	1432	IND	=36B	+51N	+52B	=44N	−10B	−30B	+53N	4.0	23.5	26.5	13.75	1388	-17.6
35	Akhilesh Ghose	1491	IND	+74N	−13B	+42N	=50B	−31N	=28B	+59N	4.0	23.0	25.0	12.75	800	-32.0
36	Rudrayan Bhattacharjee	0	IND	=34N	−28B	+79N	+47B	−19N	=38B	+55N	4.0	23.0	24.5	12.00	1464	0.0
37	Shlok Suklabaidya	0	IND	−31N	+89B	+46N	=19B	=48N	−20B	+54N	4.0	23.0	23.0	10.50	1274	0.0
38	Apurba Choudhury	1409	IND	+64B	=24N	−44B	+49N	−27B	=36N	+60B	4.0	22.5	25.5	13.75	1248	-21.6
39	Tejash Chakraborty	1497	IND	+85N	−26B	+66N	+55B	−5N	−40B	+68N	4.0	22.5	23.5	10.00	757	-16.8
40	Armaan Gupta	0	IND	+72B	−70N	=57B	=24N	+60B	+39N	−33B	4.0	21.0	23.5	13.25	1427	0.0
41	FIDE 547049758	0	—	−9N	−53B	+85N	−62B	+64N	+58B	+?N	4.0	18.0	18.0	7.00	835	0.0
42	FIDE 537073460	0	—	−19N	+?N	−35B	+?B	−29N	+?B	+57N	4.0	15.5	15.5	3.00	709	0.0
43	Siddharth Borgohain	1648	IND	F	+20B	−11N	=7N	+25B	+31B	−1N	3.5	29.5	29.5	15.75	1566	-23.2
44	Bornil Hazarika	1480	IND	=28N	+79B	+38N	=34B	−15N	=50B	−22N	3.5	24.5	26.0	11.25	1404	-17.6
45	Archit Asomiya	1492	IND	+69B	−2N	F	+63N	−18B	+53B	=15N	3.5	24.0	24.0	11.25	1388	-14.4
46	Abhirup Dhar	0	IND	+63B	−6N	−37B	=57N	+52B	−49N	+72B	3.5	22.5	25.0	10.50	1477	0.0
47	Gaurab Gautam Paul	1476	IND	+68B	−18N	=49B	−36N	+80B	+72N	−24B	3.5	22.0	23.5	8.75	813	-25.6
48	Arghadeep Debnath	1487	IND	−54B	+77N	+65B	=72N	=37B	=23N	−25B	3.5	21.5	23.5	10.50	1283	-20.8
49	FIDE 25107445	0	—	−15N	+?B	=47N	−38B	+83N	+46B	−14N	3.5	21.0	21.0	6.25	1171	0.0
50	Swarup Chakraborty	0	IND	+?B	−33N	+?B	=35N	=24B	=44N	−23B	3.5	20.5	20.5	6.00	1342	0.0
51	Arnav Paul	0	IND	=81N	−34B	−72N	+73B	+79N	−24N	+71B	3.5	17.5	19.0	7.25	699	0.0
52	Arnab Ghosh	1431	IND	=79N	+81B	−34N	−71B	−46N	+73B	+80N	3.5	15.5	17.0	6.25	665	-18.0
53	FIDE 88176908	0	—	−7B	+41N	−21B	+82N	+61B	−45N	−34B	3.0	24.5	25.5	8.00	660	0.0
54	Nayeef Asif	0	IND	+48N	−11B	−22N	+83B	−30N	+61N	−37B	3.0	24.0	25.0	7.50	1314	0.0
55	Aadidev Dutta	0	IND	+?B	−10N	+60B	−39N	+63B	−33N	−36B	3.0	23.0	23.0	6.00	706	0.0
56	Kherkatary Krish	0	IND	−11N	−72B	+?N	+67B	+58N	−17B	−29N	3.0	22.0	22.0	6.00	704	0.0
57	FIDE 537070924	0	—	+?N	−17B	=40N	=46B	+77B	−32N	−42B	3.0	22.0	22.0	5.75	688	0.0
58	FIDE 547051310	0	—	−21B	+80N	−16B	+65N	−56B	−41N	+?B	3.0	20.5	20.5	4.50	630	0.0
59	Pragnay Mazumdar	0	IND	−20N	+86B	−31N	+66B	−12N	+?B	−35B	3.0	20.5	20.5	3.00	651	0.0
60	Sartaj Mazumdar	0	IND	−12N	+75B	−55N	+84B	−40N	+76B	−38N	3.0	20.0	21.0	5.00	616	0.0
61	FIDE 537073389	0	—	+?N	−15B	=71N	=30B	−53N	−54B	+74N	3.0	19.0	19.0	5.25	1305	0.0
62	Prachujya Gogoi	0	IND	−32B	+82N	−7B	+41N	−23B	−?N	+?B	3.0	19.0	19.0	5.00	650	0.0
63	FIDE 531035523	0	—	−46N	+84B	+83N	−45B	−55N	+74B	−28N	3.0	17.0	18.0	4.00	691	0.0
64	FIDE 537078178	0	—	−38N	−66B	+75N	−79B	−41B	+78N	+81B	3.0	16.5	18.0	5.50	609	0.0
65	FIDE 547049782	0	—	−30N	+73B	−48N	−58B	−?N	+83B	+76N	3.0	16.0	16.0	5.50	678	0.0
66	FIDE 547049774	0	—	−24B	+64N	−39B	−59N	−?B	+82N	+?N	3.0	15.5	15.5	4.00	715	0.0
67	Saumyojit Paul	0	IND	−16B	+87N	−23B	−56N	+82B	+77N	−?B	3.0	15.0	15.0	3.00	627	0.0
68	Rajanya Shekhar Pal	0	IND	−47N	+?B	−12N	+?B	−70N	+?N	−39B	3.0	15.0	15.0	0.00	679	0.0
69	FIDE 547051841	0	—	−45N	+?B	−20N	+?N	−32B	−?B	+75N	3.0	14.0	14.0	2.00	674	0.0
70	Naman Newar	1509	IND	F	+40B	−9N	−16N	+68B	−12B	=31N	2.5	25.5	25.5	9.00	1151	-71.2
71	Shouvik Das	0	IND	−23B	+78N	=61B	+52N	−7B	−25N	−51N	2.5	24.5	26.5	7.00	1263	0.0
72	FIDE 429044391	0	—	−40N	+56N	+51B	=48B	−22N	−47B	−46N	2.5	22.5	25.5	8.25	1235	0.0
73	FIDE 547051361	0	—	−25B	−65N	=80B	−51N	+81B	−52N	+82B	2.5	17.5	18.5	3.25	675	0.0
74	Nath Tomonash	0	IND	−35B	+76N	−32B	+?N	−21B	−63N	−61B	2.0	20.5	20.5	2.00	673	0.0
75	FIDE 547048530	0	—	−3B	−60N	−64B	+?B	−?N	+85N	−69B	2.0	16.0	16.0	1.00	793	0.0
76	FIDE 547048590	0	—	−1N	−74B	−84N	+?B	+85B	−60N	−65B	2.0	16.0	16.0	1.00	916	0.0
77	FIDE 547068981	0	—	−17N	−48B	+86N	+?B	−57N	−67B	−?N	2.0	14.0	14.0	0.00	694	0.0
78	FIDE 547049766	0	—	−13N	−71B	−?N	+86B	−?N	−64B	+84N	2.0	11.0	11.0	1.00	985	0.0
79	Samadrit Saha	0	IND	=52B	−44N	−36B	+64N	−51B	F	F	1.5	19.0	19.0	4.75	1263	0.0
80	FIDE 547051272	0	—	−14N	−58B	=73N	+81B	−47N	F	−52B	1.5	18.5	20.0	2.75	689	0.0
81	FIDE 537078828	0	—	=51B	−52N	−?B	−80N	−73N	+84B	−64N	1.5	15.0	15.0	2.75	631	0.0
82	FIDE 547051833	0	—	−4N	−62B	+?N	−53B	−67N	−66B	−73N	1.0	20.0	20.0	0.00	848	0.0
83	FIDE 537073508	0	—	−10B	+?N	−63B	−54N	−49B	−65N	F	1.0	17.5	17.5	0.00	719	0.0
84	FIDE 537073524	0	—	−6B	−63N	+76B	−60N	−?B	−81N	−78B	1.0	17.0	17.0	2.00	723	0.0
85	FIDE 547051388	0	—	−39B	−?N	−41B	F	−76N	−75B	+86N	1.0	12.0	12.0	0.00	697	0.0
86	FIDE 547051264	0	—	−2B	−59N	−77B	−78N	−?N	F	−85B	0.0	14.0	14.0	0.00	965	0.0
87	FIDE 547048557	0	—	−5N	−67B	F	F	F	F	F	0.0	8.5	8.5	0.00	757	0.0
88	FIDE 547051329	0	—	−18B	F	F	F	F	F	F	0.0	8.0	8.0	0.00	893	0.0
89	FIDE 547048581	0	—	−27B	−37N	F	F	F	F	F	0.0	8.0	8.0	0.00	749	0.0
90	FIDE 547051337	0	—	−22N	F	F	F	F	F	F	0.0	4.5	4.5	0.00	765	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Subhradeep RoyIND
+73.6
5.0 pts · #6
2Bhavarnav SarmaIND
+66.4
5.5 pts · #3
3Pratik Kanti PaulIND
+55.6
6.0 pts · #7

Top rating losers

1Naman NewarIND
-71.2
2.5 pts · #47
2Monodeep DharIND
-49.6
4.5 pts · #13
3Koshin DasIND
-38.4
4.5 pts · #9

Biggest upsets

R6+220 Elo gap
Subhradeep Roy1566 beat Koshin Das1786
R3+169 Elo gap
Abhishek Bordoloi1525 beat Monodeep Dhar1694
R6+137 Elo gap
Bhavarnav Sarma1557 beat Monodeep Dhar1694