34th Annual King's Island Open - Major

SwissStandard

62 players participated in this 5-round tournament, held from 14 Nov 2025 to 16 Nov 2025 in Blue Ash, OH, United States. 11 titled players from 5 federations. Top 10 Elo average was 2381, and top seed was Semen Khanin ( FID, GM, 2592).

Jianchao Zhou (🇺🇸 USA, GM, 2591) won with 4.5/5, ahead of Carl Boor (4.5) and Edward Song (3.5). Zhou shared the lead from round 4, winning on tie-break.

The biggest upset came in round 2: Avanish Ram Amarnath (1503) beat Siddarth Sriaditya Kunapuli (1841), a +338-point gap.

Location

🇺🇸Blue Ash, OH, United States

Dates

14 Nov 2025 → 16 Nov 2025

Time control

Standard: 40 Moves in 80 Min. Del. 30 Sec. / / 30 Min. Del. 30 Sec.

System

Swiss · 5 rounds

Top seed

GMSemen Khanin2592

Avg top 10

2,381

Participants

Titled players · 11

GM×3

IM×1

FM×6

CM×1

Federations · 5 represented

🇺🇸United States of America×55

🇨🇦Canada×2

🇮🇳India×2

🇪🇸Spain×1

FIDE (no federation)×1

Top 3

🥇
GMJianchao Zhou
🇺🇸USA·2591
4.5pts·2624perf+1.6
🥈
FMCarl Boor
🇺🇸USA·2235
4.5pts·2439perf+22.4
🥉
IMEdward Song
🇺🇸USA·2391
3.5pts·2417perf+3.9

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders

Zhou4.5Boor4.5Adhikari3.5Song3.5Radhakrishnan3.5Sammons3.5

R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Zhou takes the title on Buchholz Cut1 (10.0).

R2–R5 · WIN STREAK

FM Carl Boor won 4 in a row (R2–R5).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1GMJianchao Zhou	*	—	—	1
2FMCarl Boor	—	*	—	—
3Sunav Adhikari	—	—	*	0
4IMEdward Song	0	—	1	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Zhou, JianchaoGM	2591	USA	+37B	+14N	=42B	+31N	+3B	4.5	10.0	11.5	10.75	2624	+1.6
2	Boor, CarlFM	2235	USA	=32B	+53B	+50N	+9B	+8N	4.5	9.0	9.5	8.50	2439	+22.4
3	Song, EdwardIM	2391	USA	+18B	+35N	+4B	=26B	−1N	3.5	13.0	15.0	9.25	2417	+3.9
4	Adhikari, Sunav	2078	USA	+33B	+5N	−3N	+11B	=22N	3.5	12.5	14.5	9.75	2250	+45.6
5	Radhakrishnan, SharathCM	2181	USA	+19N	−4B	+16N	+20B	=45B	3.5	11.0	12.5	8.25	2185	+4.8
6	Sammons, Evan	2258	USA	+17B	=7N	−13B	+32N	+50B	3.5	10.5	11.5	7.25	2149	-9.6
7	Andrews, ToddFM	2097	USA	+46B	=6B	−10N	+53N	+31B	3.5	10.0	10.5	5.75	2165	+11.8
8	Shabalov, AlexanderGM	2478	USA	+16N	=9B	=12N	+13N	−2B	3.0	13.0	15.5	8.00	2214	-13.7
9	Abraham, John Z	2164	USA	+56B	=8N	+15B	−2N	=24B	3.0	12.5	13.0	5.75	2169	+3.2
10	Joseph Benher, Savio	2177	CAN	+25B	=15N	+7B	−42N	=38B	3.0	10.5	12.0	8.25	2143	-2.8
11	McCleary, Devin R	1892	USA	=34B	=23N	+44B	−4N	+37B	3.0	10.0	11.5	5.75	2068	+24.0
12	Baker, Aidan	2094	USA	=39B	+55N	=8B	−40N	+47B	3.0	8.5	9.0	4.50	2055	-9.6
13	Duncan, Jason	2138	USA	=21N	+59B	+6N	−8B	−27N	2.5	11.5	11.5	4.75	2178	+4.4
14	Ren, Jesse	2149	USA	+58N	−1B	=47N	=17B	=19N	2.5	11.0	11.5	3.75	1966	-41.2
15	Ni, Beiyang	1998	USA	+54B	=10B	−9N	=33N	=30B	2.5	10.5	11.0	4.25	1958	-10.4
16	Iranian Prabhu Kumar, Ashwin	1890	USA	−8B	+56N	−5B	=29N	+43B	2.5	10.5	11.0	3.25	1988	+20.0
17	Gurumoorthi, Gurugrahan	1852	USA	−6N	+46B	=35B	=14N	=34N	2.5	10.0	11.5	4.75	2071	+50.8
18	Prem, Muthu Avaneesh	1879	USA	−3N	+57B	−22N	=36B	+41N	2.5	9.5	10.0	3.00	1954	+13.2
19	Samanta, Aayansh	1888	USA	−5B	=33N	=55B	+52N	=14B	2.5	9.0	9.5	3.50	1975	+20.0
20	Jha, Keya	1935	USA	=43B	=39N	+52B	−5N	=46N	2.5	8.5	9.5	3.50	1942	+0.8
21	Sivakumar, Aarya	1867	USA	=13B	=34N	−38B	=44N	+53B	2.5	8.0	8.5	3.50	2001	+34.0
22	Wang, EigenFM	2209	USA	F	F	+18B	+39N	=4B	2.5	8.0	8.0	6.25	2227	+1.6
23	Liu, Chris Ping	2014	USA	=36N	=11B	=41N	+49B	F	2.5	8.0	8.0	4.75	1890	-24.0
24	Menon, Rohan	1946	USA	F	+43N	−31B	+41B	=9N	2.5	8.0	8.0	4.50	2064	+24.4
25	Winters, Lance	1862	USA	−10N	+54B	=34B	+35N	F	2.5	7.5	7.5	3.50	2111	+24.8
26	Khanin, SemenGM	2592	FID	F	F	+45B	=3N	+42B	2.5	6.5	6.5	4.75	2641	+1.5
27	Kaplan, Avi HarrisonFM	2339	USA	F	F	+48B	=38N	+13B	2.5	6.0	6.0	5.00	2323	0.0
28	Tikhomirov, Matthew	1919	USA	F	=41B	+61N	−45N	+33B	2.5	5.0	5.0	2.75	2086	+30.8
29	Santana, Michael S	1761	USA	F	F	+57N	=16B	+51N	2.5	4.0	4.0	2.75	2129	+55.6
30	Srinivasan, Shiv Karthik	1857	USA	F	F	+54N	+60B	=15N	2.5	3.0	3.0	1.75	2170	+46.4
31	Khanbutaev, Artemii	2099	USA	F	+51B	+24N	−1B	−7N	2.0	11.5	11.5	3.50	2103	-2.8
32	Kunapuli, Siddarth Sriaditya	1841	USA	=2N	−48N	+59N	−6B	=36N	2.0	11.5	11.5	3.25	1862	-0.8
33	Yilanli, Mehmet	1837	USA	−4N	=19B	+51N	=15B	−28N	2.0	11.0	12.0	3.50	1878	+10.8
34	Kelley, Deshawn	2038	USA	=11N	=21B	=25N	F	=17B	2.0	10.5	10.5	5.25	1868	-18.0
35	Quirke, Jeffrey	2089	USA	+57N	−3B	=17N	−25B	=49N	2.0	10.0	10.5	2.50	1874	-28.0
36	Mukherjee, Sathvik	1745	USA	=23B	=44N	−40B	=18N	=32B	2.0	9.0	10.5	4.25	1843	+22.8
37	Fischer, Jacob	1821	CAN	−1N	=58B	=53N	+55B	−11N	2.0	8.5	9.0	1.00	1821	-6.0
38	Bauml, Broderick Kenneth	2073	USA	F	F	+21N	=27B	=10N	2.0	8.0	8.0	5.25	2252	+28.0
39	Yang, Andre	1905	USA	=12N	=20B	+60N	−22B	F	2.0	8.0	8.0	2.75	2042	+27.2
40	Gu, Hardy	1813	USA	F	F	+36N	+12B	F	2.0	5.0	5.0	5.00	2719	+50.0
41	Chung, Maxwell	1727	USA	=44B	=28N	=23B	−24N	−18B	1.5	10.0	11.5	3.25	1809	+17.2
42	Petesch, GabrielFM	2324	USA	F	F	=1N	+10B	−26N	1.5	10.0	10.0	5.25	2453	+9.0
43	Van Fossen, Trevor	1884	USA	=20N	−24B	+58N	−47B	−16N	1.5	9.0	9.5	1.75	1602	-50.8
44	Dinesh, Abinav	2031	USA	=41N	=36B	−11N	=21B	F	1.5	9.0	9.0	3.00	1721	-64.4
45	Tabuenca Mendataurigoitia, DanielFM	2389	ESP	F	F	−26N	+28B	=5N	1.5	8.5	8.5	4.25	2254	-4.3
46	Karthik, Aarav	1824	USA	−7N	−17N	+62B	F	=20B	1.5	8.5	8.5	1.25	1688	-19.2
47	Cretsos, Alexander	1924	USA	F	F	=14B	+43N	−12N	1.5	7.0	7.0	2.75	2042	+17.6
48	Avanish Ram Amarnath	1503	IND	F	+32B	−27N	−50B	=54N	1.5	6.0	6.0	2.25	1765	+41.6
49	Pendurti, Pranav	1815	USA	F	F	+56B	−23N	=35B	1.5	5.0	5.0	1.50	1976	+24.4
50	Hanke, Harvey	2050	USA	F	F	−2B	+48N	−6N	1.0	9.5	9.5	1.50	1923	-16.4
51	Bize, Nicholas Tim	1868	USA	F	−31N	−33B	+59N	−29B	1.0	6.5	6.5	0.00	1717	-32.0
52	Norman, Henry	1915	USA	F	F	−20N	−19B	+59B	1.0	5.0	5.0	0.00	1798	-18.8
53	Wu, Mason	1724	USA	F	−2N	=37B	−7B	−21N	0.5	12.5	12.5	1.00	1655	-14.4
54	Nadathur, Hari Rangan	1761	USA	−15N	−25N	−30B	F	=48B	0.5	9.0	9.0	0.75	1483	-50.0
55	Pittala, Ashvath Reddy	1795	USA	F	−12B	=19N	−37N	F	0.5	7.5	7.5	1.25	1661	-19.2
56	Carr, Jay	1826	USA	−9N	−16B	−49N	=57B	F	0.5	7.5	7.5	0.25	1598	-21.4
57	Aaryn Rudrapati	1811	IND	−35B	−18N	−29B	=56N	F	0.5	7.5	7.5	0.25	1567	-45.2
58	Nigatu, Jason	0	USA	−14B	=37N	−43B	F	F	0.5	6.0	6.0	1.00	1678	0.0
59	Murugan, Nikhil	1947	USA	F	−13N	−32B	−51B	−52N	0.0	6.5	6.5	0.00	1140	-82.0
60	Vadderaju, Sudeep	1931	USA	F	F	−39B	−30N	F	0.0	4.5	4.5	0.00	1081	-45.6
61	Hamley, Ryan	2084	USA	F	F	−28B	F	F	0.0	2.5	2.5	0.00	1119	-14.4
62	FIDE 343100236	0	—	F	F	−46N	F	F	0.0	1.5	1.5	0.00	1025	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Santana, Michael SUSA
+55.6
2.5 pts · #15
2Gurumoorthi, GurugrahanUSA
+50.8
2.5 pts · #25
3Gu, HardyUSA
+50.0
2.0 pts · #33

Top rating losers

1Murugan, NikhilUSA
-82.0
0.0 pts · #61
2Dinesh, AbinavUSA
-64.4
1.5 pts · #42
3Van Fossen, TrevorUSA
-50.8
1.5 pts · #51

Biggest upsets

R2+338 Elo gap
Avanish Ram Amarnath1503 beat Kunapuli, Siddarth Sriaditya1841
R4+281 Elo gap
Gu, Hardy1813 beat Baker, Aidan2094
R5+243 Elo gap
FMBoor, Carl2235 beat GMShabalov, Alexander2478