Kinosaki Onsen Open Chess Tournament

Open SwissStandard

38 players participated in this 6-round tournament, held from 22 Nov 2025 to 24 Nov 2025 in Hyogo, Japan. 6 titled players from 3 federations. Top 10 Elo average was 1981, and top seed was Shinya Kojima (🇯🇵 JPN, IM, 2307).

Kohei Yamada (🇯🇵 JPN, FM, 2191) won with 5.0/6, ahead of Yuya Yanai (5.0) and Shinya Kojima (5.0). Yamada won on tie-break after catching the field in the final round.

The biggest upset came in round 1: Bunji Takashima (1733) beat Shinya Kojima (IM, 2307), a +574-point gap.

Location

🇯🇵Hyogo, Japan

Dates

22 Nov 2025 → 24 Nov 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇯🇵IMShinya Kojima2307

Avg top 10

1,981

Participants

Titled players · 6

IM×1

FM×1

WGM×1

WCM×3

Federations · 3 represented

🇯🇵Japan×31

🇨🇳China×4

🇳🇱Netherlands×1

Top 3

🥇
FMKohei Yamada
🇯🇵JPN·2191
5.0pts·2073perf-8.8
🥈
Yuya Yanai
🇯🇵JPN·1846
5.0pts·2022perf+25.0
🥉
IMShinya Kojima
🇯🇵JPN·2307
5.0pts·2213perf-3.7

How it unfolded

Top 6 · 6 rounds

Tight race until R6; 3 players tied at 5.0/6, decided on Buchholz.

Co-leaders

Yanai5Kojima5Yamada5Noguchi4.5Tian4Tanaka4

R6 · TIEBREAK CLUSTER

3 players finish on 5.0/6. Yamada takes the title on Buchholz Cut1 (18.0).

WIN STREAKS · 3 top finishers

Yuya Yanai 4 wins (R3–R6)IM Shinya Kojima 5 wins (R2–R6)FM Kohei Yamada 3 wins (R2–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Yuya Yanai	*	—	—	1
2IMShinya Kojima	—	*	—	—
3FMKohei Yamada	—	—	*	½
4Koji Noguchi	0	—	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Yamada, KoheiFM	2191	JPN	=16B	+25N	+23B	+8B	=4N	+6N	5.0	18.0	20.5	16.75	2073	-8.8
2	Yanai, Yuya	1846	JPN	=32N	=9B	+19N	+13B	+18N	+4B	5.0	17.5	19.0	16.50	2022	+25.0
3	Kojima, ShinyaIM	2307	JPN	−23N	+34B	+22N	+10B	+7N	+5B	5.0	16.5	18.0	15.50	2213	-3.7
4	Noguchi, Koji	1969	JPN	+26B	+12N	+6B	+5N	=1B	−2N	4.5	21.5	24.0	16.50	2098	+20.0
5	Tian, TianWGM	2089	CHN	+22N	+18B	+7N	−4B	+8N	−3N	4.0	20.5	23.0	13.50	2021	-6.2
6	Tokuni, Shun	1822	JPN	+34N	+15B	−4N	+9B	+14N	−1B	4.0	20.0	21.5	12.00	1954	+20.2
7	Tanaka, Ryosuke	1824	JPN	+33B	+24N	−5B	+11N	−3B	+10B	4.0	18.5	20.0	11.00	2006	+26.8
8	Beardsley, Benjamin	1763	NED	+35N	+20B	+17B	−1N	−5B	+16N	4.0	18.0	19.5	10.50	1987	+67.6
9	Liu, Jingyu	1663	CHN	=10B	=2N	+12B	−6N	+17B	=20N	3.5	19.0	22.0	12.25	1925	+82.4
10	Manabe, Hiroshi	1923	JPN	=9N	+32B	+11B	−3N	+24B	−7N	3.5	18.5	20.0	9.25	1877	-7.2
11	Takahashi, Taiga	1756	JPN	+37N	+14B	−10N	−7B	+19N	=15B	3.5	17.5	17.5	8.25	1801	+12.0
12	Kato, Ami	1805	JPN	+27N	−4B	−9N	+26N	+28B	=23B	3.5	15.5	18.0	8.75	1760	-5.8
13	Uetani, Toshiaki	1763	JPN	+30B	−17N	+33B	−2N	=16B	+24N	3.5	15.5	17.0	7.50	1765	+1.8
14	Sakai, AzumiWCM	1855	JPN	+29B	−11N	+28B	=24N	−6B	+22N	3.5	15.0	17.0	8.25	1773	-12.2
15	Kojima, NatsumiWCM	1756	JPN	+36B	−6N	+25B	−16N	+29B	=11N	3.5	15.0	16.5	7.75	1643	-12.8
16	Mitsuyama, RikkaWCM	1707	JPN	=1N	=21B	=20N	+15B	=13N	−8B	3.0	19.0	22.0	10.75	1841	+38.4
17	Yamamichi, Atsuya	1897	JPN	+19N	+13B	−8N	−18B	−9N	+29B	3.0	17.0	19.0	8.50	1716	-55.2
18	Araki, Dai	1822	JPN	F	−5N	+29B	+17N	−2B	+21B	3.0	17.0	17.0	8.00	1915	+12.0
19	Furuse, Mizuki	1647	JPN	−17B	+36N	−2B	+25N	−11B	+30N	3.0	16.0	17.5	6.00	1558	-18.8
20	Sakai, Enju	1913	JPN	+28B	−8N	=16B	−23N	+26B	=9B	3.0	15.5	18.0	8.25	1699	-32.6
21	Karasawa, Yuta	1744	JPN	−25B	=16N	=27B	+33N	+30B	−18N	3.0	13.0	14.5	6.25	1695	-5.4
22	Zhang, Yicheng	1690	JPN	−5B	+30N	−3B	=27N	+36B	−14B	2.5	17.0	18.5	4.75	1664	-8.0
23	Takashima, Bunji	1733	JPN	+3B	F	−1N	+20B	F	=12N	2.5	16.5	16.5	9.75	2091	+67.2
24	Ivanov, Elizabeth	1738	JPN	+31N	−7B	+38N	=14B	−10N	−13B	2.5	16.5	16.5	3.75	1519	-19.0
25	Shen, Xiangting	0	CHN	+21N	−1B	−15N	−19B	=35N	+32B	2.5	16.0	17.5	5.25	1671	0.0
26	Uehara, Jun	1676	JPN	−4N	=27B	+32N	−12B	−20N	+34B	2.5	15.0	16.5	4.25	1673	-4.4
27	Wang, Minrui	1522	JPN	−12B	=26N	=21N	=22B	=33B	=28N	2.5	14.0	15.5	6.00	1631	+30.4
28	Curtis, Toby	1654	JPN	−20N	+35B	−14N	+38B	−12N	=27B	2.5	14.0	14.0	2.75	1550	-28.4
29	Toyota, Yusuke	1636	JPN	−14N	+37B	−18N	+35B	−15N	−17N	2.0	14.5	14.5	1.50	1506	-15.8
30	Horie, Ryosuke	1505	JPN	−13N	−22B	+37N	+34B	−21N	−19B	2.0	13.5	13.5	1.50	1437	-16.0
31	Watanabe, Keisuke	0	JPN	−24B	−33N	−35N	+37B	−32N	+36B	2.0	8.5	8.5	1.50	781	0.0
32	Tabe, Masaharu	1629	JPN	=2B	−10N	−26B	−36N	+31B	−25N	1.5	15.5	17.0	4.50	1542	-12.4
33	Yoshizawa, Kazufumi	1555	JPN	−7N	+31B	−13N	−21B	=27N	F	1.5	15.0	15.0	3.25	1392	-27.6
34	Kanehara, Hiromichi	1539	JPN	−6B	−3N	=36B	−30N	+37B	−26N	1.5	15.0	15.0	0.75	935	-22.2
35	Tong, Xiaojun	1402	CHN	−8B	−28N	+31B	−29N	=25B	F	1.5	13.0	13.0	3.25	884	-20.0
36	Matsuyama, Takefumi	0	JPN	−15N	−19B	=34N	+32B	−22N	−31N	1.5	12.5	14.0	2.25	1504	0.0
37	FIDE 7006683	0	—	−11B	−29N	−30B	−31N	−34N	F	0.0	11.0	12.5	0.00	809	0.0
38	FIDE 7008430	0	—	F	F	−24B	−28N	F	F	0.0	5.0	5.0	0.00	896	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Liu, JingyuCHN
+82.4
3.5 pts · #10
2Beardsley, BenjaminNED
+67.6
4.0 pts · #7
3Takashima, BunjiJPN
+67.2
2.5 pts · #21

Top rating losers

1Yamamichi, AtsuyaJPN
-55.2
3.0 pts · #15
2Sakai, EnjuJPN
-32.6
3.0 pts · #17
3Curtis, TobyJPN
-28.4
2.5 pts · #24

Biggest upsets

R1+574 Elo gap
Takashima, Bunji1733 beat IMKojima, Shinya2307
R5+234 Elo gap
Liu, Jingyu1663 beat Yamamichi, Atsuya1897
R4+180 Elo gap
Takashima, Bunji1733 beat Sakai, Enju1913