32th iChess Cup

Open SwissStandard

68 players participated in this 6-round tournament, held from 11 May 2025 to 18 May 2025 in Seoul, South Korea. 2 federations represented. Top 10 Elo average was 1662, and top seed was Jaehyun Sung (🇰🇷 KOR, 1741).

Junhyeon Chung (🇰🇷 KOR, 1623) won with 6.0/6, ahead of Jinwoo Lee (5.0) and Yisoo Shin (5.0). Chung won solo starting round 4.

The biggest upset came in round 3: Wooseok Yun (1481) beat Yejun Ha (1713), a +232-point gap.

Location

🇰🇷Seoul, South Korea

Dates

11 May 2025 → 18 May 2025

Time control

Standard: 60 minutes for game

System

Swiss · 6 rounds

Top seed

🇰🇷Jaehyun Sung1741

Avg top 10

1,662

Participants

Federations · 2 represented

🇰🇷South Korea×63

🇬🇺Guam×1

Top 3

🥇
Junhyeon Chung
🇰🇷KOR·1623
6.0pts·2309perf+82.0
🥈
Jinwoo Lee
🇰🇷KOR·1547
5.0pts·1815perf+69.2
🥉
Yisoo Shin
🇰🇷KOR·1582
5.0pts·1785perf+41.2

How it unfolded

Top 6 · 6 rounds

Junhyeon Chung led from R4; +1.0-point edge over the runner-up.

Co-leaders

Chung6Lee5Shin5You4.5Kim4.5Oh4.5

R4–R6 · LEAD HELD

Junhyeon Chung never relinquished the lead after R4; final gap +1.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Junhyeon Chung beat Jinwoo Lee (White).

WIN STREAKS · 3 top finishers

Junhyeon Chung 6 wins (R1–R6)Jinwoo Lee 3 wins (R4–R6)Yisoo Shin 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Junhyeon Chung	*	1	—	—
2Jinwoo Lee	0	*	—	—
3Yisoo Shin	—	—	*	—
4Eunsung You	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Chung, Junhyeon	1623	KOR	+16B	+11N	+2B	+9N	+4B	+10N	6.0	21.5	25.0	25.00	2309	+82.0
2	Lee, Jinwoo	1547	KOR	+29N	+15B	−1N	+21B	+22N	+9N	5.0	20.0	23.0	17.00	1815	+69.2
3	Shin, Yisoo	1582	KOR	+58B	+21N	−30N	+14B	+24N	+8B	5.0	17.0	18.0	15.00	1785	+41.2
4	Oh, Jaemin	1534	KOR	+51B	+17N	+5B	=8B	−1N	+19N	4.5	21.5	23.0	15.00	1708	+60.4
5	Kim, Hajoon	1645	KOR	+53N	+12B	−4N	+23B	=8N	+18B	4.5	19.0	20.5	14.00	1679	+12.0
6	You, Eunsung	1631	KOR	+46N	=41B	+18N	=13B	=7N	+22B	4.5	17.5	19.5	14.00	1711	+28.4
7	Chung, Jaeheon	1528	KOR	+47N	+60B	−8N	+25B	=6B	+16N	4.5	17.0	18.0	11.75	1611	+8.2
8	Han, Dohoon	1595	KOR	+44B	+23N	+7B	=4N	=5B	−3N	4.0	21.5	23.5	14.00	1603	+3.6
9	Joo, Eram	1582	KOR	+27N	+28B	+36N	−1B	+13N	−2B	4.0	21.0	23.5	12.50	1537	-9.2
10	Shin, Seungmin	1617	KOR	+14N	+24B	=13N	=22B	+28N	−1B	4.0	20.0	23.0	13.50	1619	+11.2
11	Son, Haseong	1464	KOR	+26N	−1B	−14N	+29B	+27N	+25B	4.0	19.0	22.0	12.00	829	-11.2
12	Kim, Taeu	1510	KOR	+20B	−5N	+33B	=17N	=15B	+21B	4.0	18.5	21.0	12.75	1574	+15.2
13	Bae, Jaemin	1522	KOR	+62B	+33N	=10B	=6N	−9B	+23N	4.0	18.0	19.0	10.75	1590	+19.6
14	Kim, Rian	0	KOR	−10B	+57N	+11B	−3N	+43B	+28B	4.0	18.0	19.0	10.00	1520	0.0
15	Maeng, Chihyun	1458	KOR	+42B	−2N	=54B	+50N	=12N	+24B	4.0	15.5	17.0	9.25	1583	+32.4
16	Kim, Moonso	1407	KOR	−1N	+26B	=19B	+35N	+38N	−7B	3.5	19.5	22.0	9.75	1555	+38.4
17	Hwang, Yoonho Jason	1448	KOR	+25N	−4B	+61N	=12B	−18N	+26B	3.5	18.0	19.0	9.00	1228	-34.4
18	An, Seunggi	1519	KOR	+67B	=37N	−6B	+42N	+17B	−5N	3.5	17.0	17.0	6.75	1522	+2.8
19	Ahn, Taehyun	1495	KOR	+45N	−30B	=16N	+48B	+34N	−4B	3.5	15.5	17.5	8.25	1492	+4.8
20	Kim, Jiwoo	0	KOR	−12N	=53B	−34N	+57N	+35B	+39B	3.5	13.0	14.0	6.75	1374	0.0
21	Lee, Donghwa	1456	KOR	+61N	−3B	+39B	−2N	+42B	−12N	3.0	18.5	19.5	5.50	748	-63.6
22	Kim, Ria	1674	KOR	=50B	+43N	+35B	=10N	−2B	−6N	3.0	18.0	19.5	7.25	1463	-54.8
23	Choi, Jungwoon	1462	KOR	+59N	−8B	+27N	−5N	+36B	−13B	3.0	18.0	19.0	6.50	784	-34.0
24	Yun, Yejoon	1469	KOR	+57B	−10N	+44B	+36N	−3B	−15N	3.0	17.5	18.5	5.50	731	-48.4
25	Sung, Jaewon	0	KOR	−17B	+51N	+52B	−7N	+37B	−11N	3.0	16.0	17.5	5.50	1448	0.0
26	Lee, Seungjun	0	KOR	−11B	−16N	+51B	+44N	+33B	−17N	3.0	15.5	17.0	6.00	1242	0.0
27	Choi, Sihwan	0	KOR	−9B	+66N	−23B	+40N	−11B	+42N	3.0	15.5	15.5	4.50	686	0.0
28	Kim, Hyunwoo B	1463	KOR	+66B	−9N	+62B	+43N	−10B	−14N	3.0	15.0	15.0	3.00	778	-26.4
29	Hwang, Jiu	0	KOR	−2B	−42N	+66B	−11N	+59B	+43N	3.0	14.0	14.0	3.00	703	0.0
30	Sung, Jaehyun	1741	KOR	+52B	+19N	+3B	F	F	F	3.0	10.0	10.0	10.00	2292	+11.8
31	Kim, Keonwoo	1741	KOR	F	F	F	+46B	+52N	+45B	3.0	5.5	5.5	5.50	2216	+10.4
32	Kim, Junesun	1602	GUM	F	F	F	+58N	+63B	+34B	3.0	4.5	4.5	4.50	2211	+10.0
33	Shin, Seojun	1416	KOR	+38N	−13B	−12N	+45B	−26N	=40B	2.5	16.0	18.0	5.75	1432	+4.4
34	Kim, Jio	0	KOR	=35B	−50N	+20B	+37N	−19B	−32N	2.5	15.0	16.5	7.25	1395	-6.0
35	Oshiro, Souta	1511	KOR	=34N	+38B	−22N	−16B	−20N	+50B	2.5	15.0	16.5	5.25	1509	-0.4
36	Kwon, Raein	0	KOR	+?N	+49N	−9B	−24B	−23N	=38B	2.5	14.5	14.5	3.25	1458	0.0
37	Ha, Yejun	1713	KOR	+64N	=18B	−41N	−34B	−25N	+52B	2.5	13.0	14.0	4.25	1449	-63.6
38	Park, Sihun	1632	KOR	−33B	−35N	+47B	+59N	−16B	=36N	2.5	13.0	14.0	4.25	640	-90.0
39	Lee, Juwon A	0	KOR	−41B	+46B	−21N	=52N	+50B	−20N	2.5	12.5	14.0	4.25	1462	0.0
40	Seo, Sarang	0	KOR	−60N	+47B	−53N	−27B	+51B	=33N	2.5	10.5	11.5	4.75	1143	0.0
41	Yun, Wooseok	1481	KOR	+39N	=6N	+37B	F	F	F	2.5	9.5	9.5	7.25	1858	+38.8
42	FIDE 13225944	0	—	−15N	+29B	+60N	−18B	−21N	−27B	2.0	16.5	17.5	4.00	1294	0.0
43	Yim, Jeongbeen	0	KOR	+48N	−22B	+64N	−28B	−14N	−29B	2.0	15.0	16.0	3.00	1492	0.0
44	Cho, Jungbin	0	KOR	−8N	+59B	−24N	−26B	−45N	+57B	2.0	13.0	14.0	2.00	728	0.0
45	FIDE 13230999	0	—	−19B	−52N	+58B	−33N	+44B	−31N	2.0	12.5	13.5	3.00	708	0.0
46	Kim, Yeonseo	1409	KOR	−6B	−39N	−57B	−31N	+65N	+63B	2.0	12.0	12.5	1.50	877	-14.0
47	Jang, Seyong	0	KOR	−7B	−40N	−38N	F	+?B	+48B	2.0	11.5	11.5	2.00	1519	0.0
48	Suh, Hannah	1431	KOR	−43B	−54N	+67B	−19N	+57B	−47N	2.0	10.0	10.0	1.00	668	-17.2
49	Seo, Yerin	1522	KOR	+54N	−36B	+50B	F	F	F	2.0	5.5	5.5	3.00	2229	+15.6
50	Kim, Jiho A	1427	KOR	=22N	+34B	−49N	−15B	−39N	−35N	1.5	14.5	16.5	4.00	1358	-20.4
51	Hwang, Noel	0	KOR	−4N	−25B	−26N	+56B	−40N	=55B	1.5	14.5	16.0	2.25	1491	0.0
52	Lee, Yoonsoo	1429	KOR	−30N	+45B	−25N	=39B	−31B	−37N	1.5	14.0	16.0	3.25	930	-17.2
53	Lee, Hyunchae	1423	KOR	−5B	=20N	+40B	F	F	F	1.5	10.5	10.5	4.25	838	-8.0
54	Jun, Hayoon	0	KOR	−49B	+48B	=15N	F	F	F	1.5	8.0	8.0	4.00	1454	0.0
55	Choi, Juneho	1434	KOR	F	F	F	=65B	=56N	=51N	1.5	3.5	3.5	1.75	1545	+5.6
56	Kim, Sunyong	1561	KOR	F	F	F	−51N	=55B	+65N	1.5	3.5	3.5	1.25	1444	-5.6
57	Lee, Seoha	0	KOR	−24N	−14B	+46N	−20B	−48N	−44N	1.0	14.5	16.5	2.00	1304	0.0
58	Hong, Jooyeol	0	KOR	−3N	−61B	−45N	−32B	+?N	−59B	1.0	12.0	12.0	0.00	1434	0.0
59	Park, Gunha	0	KOR	−23B	−44N	F	−38B	−29N	+58N	1.0	11.5	11.5	1.00	724	0.0
60	Roh, Sungchan	1456	KOR	+40B	−7N	−42B	F	F	F	1.0	9.0	9.0	2.50	733	-15.2
61	Park, Seojin A	0	KOR	−21B	+58N	−17B	F	F	F	1.0	7.5	7.5	1.00	718	0.0
62	Jeon, Sehyun	0	KOR	−13N	+?B	−28N	F	F	F	1.0	7.0	7.0	0.00	1363	0.0
63	Lee, Hyun	0	KOR	F	F	F	+?B	−32N	−46N	1.0	5.0	5.0	0.00	1375	0.0
64	Chung, Sunhwa	1427	KOR	−37B	+67N	−43B	F	F	F	1.0	4.5	4.5	0.00	913	-6.4
65	Lee, Hyunju	1410	KOR	F	F	F	=55N	−46B	−56B	0.5	5.0	5.0	0.75	1192	0.0
66	FIDE 13231049	0	—	−28N	−27B	−29N	F	F	F	0.0	9.0	9.0	0.00	654	0.0
67	FIDE 13230018	0	—	−18N	−64B	−48N	F	F	F	0.0	6.5	6.5	0.00	648	0.0
68	Park, Sejin A	0	KOR	F	F	F	−?N	F	F	0.0	0.0	0.0	0.00	690	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Chung, JunhyeonKOR
+82.0
6.0 pts · #1
2Lee, JinwooKOR
+69.2
5.0 pts · #4
3Oh, JaeminKOR
+60.4
4.5 pts · #5

Top rating losers

1Park, SihunKOR
-90.0
2.5 pts · #57
2Lee, DonghwaKOR
-63.6
3.0 pts · #62
3Ha, YejunKOR
-63.6
2.5 pts · #14

Biggest upsets

R3+232 Elo gap
Yun, Wooseok1481 beat Ha, Yejun1713
R5+225 Elo gap
Kim, Moonso1407 beat Park, Sihun1632
R1+216 Elo gap
Shin, Seojun1416 beat Park, Sihun1632