Tokai Open 2026

Open SwissStandard

49 players participated in this 5-round tournament, held from 11 Jan 2026 to 12 Jan 2026 in Nagoya, Japan. 4 titled players from 4 federations. Top 10 Elo average was 2007, and top seed was Shinya Kojima (🇯🇵 JPN, IM, 2303).

Shinya Kojima (🇯🇵 JPN, IM, 2303) won with 5.0/5, ahead of Tosei Yamaguchi (4.0) and Sameer Sharma (4.0). Kojima broke clear in the final round.

The biggest upset came in round 3: Vedat Erkoc (1850) beat Akira Watanabe (FM, 2229), a +379-point gap.

Location

🇯🇵Nagoya, Japan

Dates

11 Jan 2026 → 12 Jan 2026

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 5 rounds

Top seed

🇯🇵IMShinya Kojima2303

Avg top 10

2,007

Participants

Titled players · 4

IM×1

FM×1

WCM×2

Federations · 4 represented

🇯🇵Japan×43

🇬🇧Scotland×1

🇹🇼Chinese Taipei×1

🇧🇷Brazil×1

Top 3

🥇
IMShinya Kojima
🇯🇵JPN·2303
5.0pts·2706perf+4.1
🥈
Tosei Yamaguchi
🇯🇵JPN·1920
4.0pts·2085perf+18.8
🥉
Sameer Sharma
🇯🇵JPN·1871
4.0pts·2069perf+48.8

How it unfolded

Top 6 · 5 rounds

IM Shinya Kojima led from R5; +1.0-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Kojima5Sharma4Aso4Tanaka4Yamaguchi4Mizumoto4

R5–R5 · LEAD HELD

IM Shinya Kojima never relinquished the lead after R5; final gap +1.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

IM Shinya Kojima beat Sameer Sharma (White).

WIN STREAKS · 2 top finishers

IM Shinya Kojima 5 wins (R1–R5)Masashi Aso 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMShinya Kojima	*	1	—	1
2Sameer Sharma	0	*	—	—
3Masashi Aso	—	—	*	—
4Satoshi Tanaka	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Kojima, ShinyaIM	2303	JPN	+37B	+14N	+3B	+5N	+2B	5.0	15.0	16.5	16.50	2706	+4.1
2	Yamaguchi, Tosei	1920	JPN	+19B	+30N	+4B	+11N	−1N	4.0	15.0	17.0	12.00	2085	+18.8
3	Sharma, Sameer	1871	JPN	+16N	+22B	−1N	+24B	+11B	4.0	13.5	16.0	11.00	2069	+48.8
4	Mizumoto, Takahiro	1769	JPN	+32N	+9B	−2N	+17B	+13N	4.0	13.5	15.5	11.50	2057	+22.8
5	Tanaka, Satoshi	1879	JPN	+42B	+41N	+23B	−1B	+8N	4.0	12.0	13.0	8.00	2061	+21.0
6	Aso, Masashi	0	JPN	+25B	−15N	+30B	+33N	+12B	4.0	10.5	12.5	9.50	1911	0.0
7	Noguchi, Koji	1989	JPN	+29N	−11B	+21N	=18B	+25N	3.5	11.5	14.0	9.50	1915	-8.0
8	Erkoc, Vedat	1850	JPN	+38B	+31N	+26B	=12N	−5B	3.5	11.5	13.0	7.50	1964	+11.2
9	Scott, Tyler	1987	JPN	+35B	−4N	+41B	=20N	+23B	3.5	11.5	12.5	7.00	1886	-10.2
10	Shakuya, Keita	1894	JPN	+40N	=27B	−11N	+22B	+28N	3.5	10.5	12.0	7.75	1850	-7.2
11	Ferreira, Raphael Suzuki	1764	BRA	+34B	+7N	+10B	−2B	−3N	3.0	15.0	17.0	9.00	1919	+32.8
12	Kanda, Daigo	1819	JPN	+13N	=24B	+27N	=8B	−6N	3.0	13.0	15.5	8.50	1999	+14.2
13	Shirakawa, Mizuki	0	JPN	−12B	+36N	+37B	+15N	−4B	3.0	12.0	13.5	6.50	1802	0.0
14	Tokuni, Shun	1842	JPN	+44B	−1B	=22N	=23N	+31B	3.0	12.0	13.0	5.50	1762	-8.8
15	Kinoshita, Akira	1882	JPN	=39N	+6B	=24N	−13B	+32N	3.0	11.5	13.0	8.00	1807	-3.0
16	Wang, Minrui	1553	JPN	−3B	=25N	+39N	+27B	=24N	3.0	11.5	13.0	6.50	1874	+78.0
17	Kuroda, Yunosuke	1890	JPN	+43B	−23N	+19B	−4N	+35B	3.0	11.5	12.5	6.00	1759	-15.6
18	Takashima, Bunji	1800	JPN	+45B	−26N	+31B	=7N	=20B	3.0	11.0	11.0	5.25	1887	+9.2
19	Furuse, Mizuki	1628	JPN	−2N	+46B	−17N	+30N	+33B	3.0	11.0	11.0	4.00	1881	+48.8
20	Nagai, Toshiyuki	1846	JPN	−22N	+42B	+40N	=9B	=18N	3.0	10.5	11.5	5.75	1778	-6.8
21	Takayasu, Melody	1718	JPN	−26B	+45N	−7B	+43N	+34B	3.0	9.0	9.0	3.00	1782	+2.2
22	Itokazu, Antonio	1535	JPN	+20B	−3N	=14B	−10N	+37B	2.5	13.5	15.0	6.00	1835	+70.0
23	Kojima, NatsumiWCM	1743	JPN	+48N	+17B	−5N	=14B	−9N	2.5	13.5	13.5	4.50	1813	+6.4
24	Matsunaga, Toma	2021	JPN	+36B	=12N	=15B	−3N	=16B	2.5	13.0	15.0	6.50	1782	-57.2
25	Yamamichi, Atsuya	1842	JPN	−6N	=16B	+32N	+49B	−7B	2.5	12.5	12.5	3.50	1578	-25.6
26	Watanabe, AkiraFM	2229	JPN	+21N	+18B	−8N	=28B	F	2.5	12.0	12.0	7.25	1931	-23.4
27	Takayasu, Nobuyuki	1751	JPN	+47B	=10N	−12B	−16N	+38B	2.5	11.0	11.0	3.25	1617	-14.8
28	Araki, Dai	1834	JPN	−31B	+38N	+43B	=26N	−10B	2.5	9.5	10.5	3.75	1916	+7.6
29	Sawamura, Tetsushi	1704	JPN	−7B	+34N	−33B	=38N	+49N	2.5	9.0	9.0	2.75	1557	-11.2
30	Fujisawa, Hiroshi	1760	JPN	+46N	−2B	−6N	−19B	+40N	2.0	12.5	12.5	1.50	1598	-26.4
31	Amenomori, Kentaro	0	JPN	+28N	−8B	−18N	+41B	−14N	2.0	12.0	13.0	3.50	1722	0.0
32	Sirimalla, Srivatsa	0	JPN	−4B	+35N	−25B	+36N	−15B	2.0	11.5	13.5	4.00	1706	0.0
33	Higashishiba, Teruomi	1954	JPN	−41N	+39B	+29N	−6B	−19N	2.0	11.0	12.0	4.00	1642	-28.8
34	Watanabe, Keisuke	0	JPN	−11N	−29B	+42N	+39B	−21N	2.0	10.0	11.0	2.50	1602	0.0
35	Zhang, Yicheng	1684	JPN	−9N	−32B	+46N	+44B	−17N	2.0	9.5	9.5	1.00	1676	-1.6
36	Donaldson, Sheldon	1716	JPN	−24N	−13B	+45N	−32B	+44N	2.0	8.5	8.5	1.00	1774	+2.2
37	Akai, Kiyotaka	1724	JPN	−1N	+44B	−13N	=40B	−22N	1.5	12.0	13.0	1.75	1615	-14.4
38	Kumasaka, Akiho	1548	JPN	−8N	−28B	+48N	=29B	−27N	1.5	11.0	11.0	1.25	1463	-13.6
39	Matsuyama, Takefumi	1593	JPN	=15B	−33N	−16B	−34N	+42B	1.5	10.0	11.0	2.50	1657	+6.8
40	Toyota, Yusuke	1620	JPN	−10B	+47N	−20B	=37N	−30B	1.5	10.0	10.0	0.75	1484	-11.0
41	Uegaki, Haruo	1643	SCO	+33B	−5B	−9N	−31N	F	1.0	11.5	12.5	2.00	1815	+21.6
42	Inukai, Kazunori	1588	JPN	−5N	−20N	−34B	+46B	−39N	1.0	10.5	10.5	0.00	973	-32.8
43	Wong, Linda JaneWCM	1614	TPE	−17N	+48B	−28N	−21B	F	1.0	9.5	9.5	0.00	1015	-15.0
44	Yoshizawa, Kazufumi	1527	JPN	−14N	−37N	+47B	−35N	−36B	1.0	8.5	8.5	0.00	941	-37.2
45	FIDE 7008414	0	—	−18N	−21B	−36B	F	F	0.0	8.0	8.0	0.00	945	0.0
46	Watanabe, Satoru	0	JPN	−30B	−19N	−35B	−42N	F	0.0	8.0	8.0	0.00	865	0.0
47	Atre, Shreyas	0	JPN	−27N	−40B	−44N	F	F	0.0	5.0	5.0	0.00	833	0.0
48	FIDE 7008317	0	—	−23B	−43N	−38B	F	F	0.0	5.0	5.0	0.00	835	0.0
49	FIDE 7006683	0	—	F	F	F	−25N	−29B	0.0	5.0	5.0	0.00	973	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Wang, MinruiJPN
+78.0
3.0 pts · #9
2Itokazu, AntonioJPN
+70.0
2.5 pts · #15
3Sharma, SameerJPN
+48.8
4.0 pts · #2

Top rating losers

1Matsunaga, TomaJPN
-57.2
2.5 pts · #13
2Yoshizawa, KazufumiJPN
-37.2
1.0 pts · #45
3Inukai, KazunoriJPN
-32.8
1.0 pts · #47

Biggest upsets

R3+379 Elo gap
Erkoc, Vedat1850 beat FMWatanabe, Akira2229
R5+326 Elo gap
Furuse, Mizuki1628 beat Higashishiba, Teruomi1954
R1+311 Elo gap
Uegaki, Haruo1643 beat Higashishiba, Teruomi1954