2026 Chess.com Botwinnik Open - Groep C

Open SwissStandard

48 players participated in this 6-round tournament, held from 02 Jan 2026 to 04 Jan 2026 in Zoetermeer, Netherlands. 4 federations represented. Top 10 Elo average was 1711, and top seed was Maurits Bons (🇳🇱 NED, 1790).

Moritz Otto (🇩🇪 GER, 0) won with 6.0/6, ahead of Arie Van Heeren (4.5) and Yuvan Yatin Samala (4.5). Otto won solo starting round 4.

The biggest upset came in round 2: Devran Gulave (1449) beat Maurits Bons (1790), a +341-point gap.

Location

🇳🇱Zoetermeer, Netherlands

Dates

02 Jan 2026 → 04 Jan 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇳🇱Maurits Bons1790

Avg top 10

1,711

Participants

Federations · 4 represented

🇳🇱Netherlands×29

🇧🇪Belgium×2

🇩🇪Germany×2

🇯🇵Japan×1

Top 3

🥇
Moritz Otto
🇩🇪GER
6.0pts·1790perf0.0
🥈
Arie Van Heeren
🇳🇱NED·1779
4.5pts·1846perf+3.8
🥉
Yuvan Yatin Samala
🇳🇱NED·1665
4.5pts·1529perf-7.2

How it unfolded

Top 6 · 6 rounds

Moritz Otto led from R4; +1.5-point edge over the runner-up.

Co-leaders

Otto6Van Heeren4.5De Groot4.5Bos4.5Ngangbam4.5Samala4.5

R4–R6 · LEAD HELD

Moritz Otto never relinquished the lead after R4; final gap +1.5 over the runner-up.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Moritz Otto beat Arie Van Heeren (Black).

R1–R6 · WIN STREAK

Moritz Otto won 6 in a row (R1–R6).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Moritz Otto	*	1	—	—
2Arie Van Heeren	0	*	—	—
3Rutger De Groot	—	—	*	—
4Cor Bos	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Otto, Moritz	0	GER	+36N	+?B	+31N	+8B	+2N	+9B	6.0	16.5	16.5	16.50	1790	0.0
2	Van Heeren, Arie	1779	NED	+30B	+10N	=5B	+12N	−1B	+17N	4.5	21.0	23.5	15.25	1846	+3.8
3	Samala, Yuvan Yatin	1665	NED	+37B	+35N	=6B	=5N	+20B	=4N	4.5	18.5	20.5	13.75	1529	-7.2
4	Bos, Cor	0	NED	+?N	=11B	+13N	=17B	+7N	=3B	4.5	18.5	18.5	13.00	1632	0.0
5	Ngangbam, Malem	1537	NED	+41N	+32B	=2N	=3B	=17N	+8B	4.5	18.0	19.0	13.00	1631	+15.2
6	De Groot, Rutger	0	NED	+25N	+7B	=3N	+31B	−8N	+29B	4.5	17.5	19.5	13.25	1754	0.0
7	Bakker, Sjoerd	1722	NED	+21B	−6N	+16B	+10N	−4B	+32N	4.0	19.5	21.5	12.50	2322	+9.6
8	Dockhorn, Thijs	0	NED	+?B	+9N	+?B	−1N	+6B	−5N	4.0	19.0	19.0	8.50	1697	0.0
9	Kinoshita, Kanako	1773	JPN	+19N	−8B	+26B	+18N	+32B	−1N	4.0	18.5	20.5	10.50	2389	+9.4
10	Wezenaar, Femke	1522	NED	+33N	−2B	+45N	−7B	+39N	+22B	4.0	15.0	16.0	7.50	951	-16.8
11	Samala, Gagan Gandiva	0	NED	+15B	=4N	−12B	=26N	+18B	=16N	3.5	18.0	20.5	11.75	1589	0.0
12	Van der Sluijs, Aad	1537	NED	F	+14B	+11N	−2B	=22N	+19B	3.5	17.5	17.5	11.50	1816	+43.2
13	Tarigonda, Seyan	0	NED	=26B	+15N	−4B	+14B	+25N	−?N	3.5	16.5	16.5	10.75	1797	0.0
14	Neumeijer, Ruud	1757	NED	=29B	−12N	+34B	−13N	+38B	+27N	3.5	14.0	16.0	7.75	1692	-4.6
15	Bhutani, Granth	0	NED	−11N	−13B	+33N	=28B	+42N	+25B	3.5	14.0	15.0	6.75	1622	0.0
16	Drager, Jason	0	NED	−32N	+33B	−7N	+41B	+31N	=11B	3.5	13.5	14.5	6.75	922	0.0
17	Gulave, Devran	1449	NED	F	+48N	+20B	=4N	=5B	−2B	3.0	16.5	16.5	7.50	1699	+34.8
18	Nguyen, Tri Khoi	1640	BEL	+40B	−20N	+21B	−9B	−11N	+34N	3.0	15.5	16.5	6.00	998	-5.8
19	Van Rossem, Kato	1538	BEL	−9B	+40N	+27B	=25B	=26N	−12N	3.0	15.0	16.0	6.00	1597	+10.0
20	Van der Sluis, Job	0	NED	+22N	+18B	−17N	+?B	−3N	F	3.0	13.5	13.5	6.00	1592	0.0
21	Hamers, Hidde	0	NED	−7N	+36B	−18N	−?N	+40B	+31B	3.0	12.0	12.0	5.00	881	0.0
22	Bosch, Alt	0	NED	−20B	+44N	+?B	=?N	=12B	−10N	3.0	11.5	11.5	2.75	1462	0.0
23	Witte, Phoebe	1577	NED	F	F	=39N	+43B	=27B	+37N	3.0	7.0	7.0	5.00	1646	+2.0
24	Bravenboer, Remco	0	NED	+?B	F	−32N	F	+28N	+35B	3.0	6.5	6.5	4.50	1467	0.0
25	Macnaughton, Adeon	1757	NED	−6B	+28N	+35B	=19N	−13B	−15N	2.5	17.0	19.0	6.00	1686	-5.6
26	FIDE 40129390	0	—	=13N	+39B	−9N	=11B	=19B	F	2.5	15.5	15.5	6.50	1475	0.0
27	Wersal, Leo	1646	GER	−45N	+41B	−19N	+34B	=23N	−14B	2.5	12.5	13.5	4.50	1351	-44.0
28	Omnes, Zoe	1447	NED	−31N	−25B	+47N	=15N	−24B	+43B	2.5	12.0	12.0	2.75	956	-5.6
29	Mariappan, Melvin	0	NED	=14N	−?B	+38N	+42B	F	−6N	2.5	11.0	11.0	4.75	1677	0.0
30	Neelakantan, Dakshesh Nathan	0	NED	−2N	=43B	−42N	−?B	+46N	+39B	2.5	9.0	9.0	3.00	979	0.0
31	Nijman, Jesse	0	NED	+28B	+34N	−1B	−6N	−16B	−21N	2.0	19.5	21.5	4.50	1467	0.0
32	Nooij, Valentijn	0	NED	+16B	−5N	+24B	F	−9N	−7B	2.0	19.0	19.0	6.50	883	0.0
33	FIDE 40129470	0	—	−10B	−16N	−15B	+46B	−34N	+44N	2.0	14.0	15.0	2.00	722	0.0
34	FIDE 40129420	0	—	+47N	−31B	−14N	−27N	+33B	−18B	2.0	13.0	13.0	2.00	881	0.0
35	FIDE 40128113	0	—	+43N	−3B	−25N	+44B	−?B	−24N	2.0	12.0	12.0	2.00	911	0.0
36	FIDE 40129403	0	—	−1B	−21N	F	−38B	+47N	+40N	2.0	12.0	12.0	1.00	719	0.0
37	FIDE 40129411	0	—	−3N	+47B	−?N	−39B	+44N	−23B	2.0	10.0	10.0	1.00	819	0.0
38	Ay, Barry	1519	NED	F	F	−29B	+36N	−14N	+42B	2.0	9.0	9.0	3.00	957	-8.0
39	FIDE 40129497	0	—	F	−26N	=23B	+37N	−10B	−30N	1.5	14.0	14.0	3.50	1357	0.0
40	FIDE 40129462	0	—	−18N	−19B	−41N	+47B	−21N	−36B	1.0	12.0	12.0	0.00	789	0.0
41	FIDE 40129438	0	—	−5B	−27N	+40B	−16N	F	F	1.0	11.5	11.5	1.00	788	0.0
42	FIDE 40129500	0	—	F	F	+30B	−29N	−15B	−38N	1.0	10.5	10.5	2.50	719	0.0
43	FIDE 40129519	0	—	−35B	=30N	=?B	−23N	F	−28N	1.0	10.0	10.0	1.25	712	0.0
44	FIDE 40129454	0	—	−?N	−22B	+46N	−35N	−37B	−33B	1.0	10.0	10.0	1.00	814	0.0
45	Helouane, Walid	0	NED	+27B	−?N	−10B	F	F	F	1.0	6.5	6.5	2.50	1499	0.0
46	FIDE 40125416	0	—	−?B	−?N	−44B	−33N	−30B	+47N	1.0	5.5	5.5	0.00	903	0.0
47	FIDE 40129535	0	—	−34B	−37N	−28B	−40N	−36B	−46B	0.0	9.5	10.5	0.00	647	0.0
48	Bons, Maurits	1790	NED	F	−17B	F	F	F	F	0.0	3.0	3.0	0.00	650	-35.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Van der Sluijs, AadNED
+43.2
3.5 pts · #9
2Gulave, DevranNED
+34.8
3.0 pts · #16
3Ngangbam, MalemNED
+15.2
4.5 pts · #12

Top rating losers

1Wersal, LeoGER
-44.0
2.5 pts · #25
2Bons, MauritsNED
-35.2
0.0 pts · #47
3Wezenaar, FemkeNED
-16.8
4.0 pts · #31

Biggest upsets

R2+341 Elo gap
Gulave, Devran1449 beat Bons, Maurits1790
R2+220 Elo gap
Van der Sluijs, Aad1537 beat Neumeijer, Ruud1757
R3+108 Elo gap
Van Rossem, Kato1538 beat Wersal, Leo1646