Mombasa Open Chess Championship 2025 - U1700

Open SwissStandard

60 players participated in this 6-round tournament, held from 10 Oct 2025 to 12 Oct 2025 in Mombasa, Kenya. 2 federations represented. Top 10 Elo average was 1664, and top seed was Ikonde Nekemiah Arnold (🇺🇬 UGA, 1696).

Amos Wayne (🇰🇪 KEN, 1671) won with 5.5/6, ahead of Mwega Nkanda (5.0) and Deng Achol Deng (5.0). Wayne won solo starting round 5.

The biggest upset came in round 4: Karl Kwezi Katongole (1509) beat Mbabani Allan (1683), a +174-point gap.

Location

🇰🇪Mombasa, Kenya

Dates

10 Oct 2025 → 12 Oct 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇺🇬Ikonde Nekemiah Arnold1696

Avg top 10

1,664

Participants

Federations · 2 represented

🇰🇪Kenya×47

🇺🇬Uganda×4

Top 3

🥇
Amos Wayne
🇰🇪KEN·1671
5.5pts·1942perf+46.0
🥈
Mwega Nkanda
🇰🇪KEN·1631
5.0pts·1758perf+6.4
🥉
Deng Achol Deng
🇰🇪KEN
5.0pts·1908perf+54.4

How it unfolded

Top 6 · 6 rounds

Amos Wayne led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Wayne5.5Deng5Arnold5James5Wamalwa5Nkanda5

R5–R6 · LEAD HELD

Amos Wayne held the sole lead from R5 through R6 without losing it.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Amos Wayne beat Deng Achol Deng (White).

WIN STREAKS · 2 top finishers

Amos Wayne 5 wins (R1–R5)Deng Achol Deng 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Amos Wayne	*	1	—	1
2Deng Achol Deng	0	*	—	—
3Ikonde Nekemiah Arnold	—	—	*	—
4Lelaono James	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Amos Wayne	1671	KEN	+51B	+16N	+3B	+20N	+6B	=4B	5.5	21.5	22.5	20.00	1942	+46.0
2	Mwega Nkanda	1631	KEN	+29N	+25B	=7N	+13B	=8N	+50B	5.0	18.5	19.5	15.00	1758	+6.4
3	Deng Achol Deng	0	KEN	+24N	+22B	−1N	+31B	+38N	+12B	5.0	17.5	19.5	14.00	1908	+54.4
4	Sharille Roberts Wamalwa	1601	KEN	+53N	+35B	=20B	+12N	+34B	=1N	5.0	17.0	18.0	13.75	1854	+26.6
5	Ikonde Nekemiah Arnold	1696	UGA	+47B	=33N	+21B	+9N	=7B	+40N	5.0	16.5	18.0	14.50	1863	+12.8
6	Lelaono James	1659	KEN	+54N	+44B	+14N	+38B	−1N	+22B	5.0	16.0	17.0	11.50	1777	+24.0
7	Stephan Gruetter	0	KEN	+15B	+30N	=2B	+39N	=5N	=8B	4.5	21.0	23.0	15.75	1667	0.0
8	Omweri Dylus	1628	KEN	+55B	+17N	=9B	+18N	=2B	=7N	4.5	21.0	22.0	15.00	1736	+11.6
9	Mercelino Thuku	0	KEN	+31N	+50B	=8N	−5B	+32N	+13B	4.5	18.0	19.0	11.75	1634	0.0
10	Peter Munyao	1658	KEN	−14B	+59N	+52B	+43N	F	+18N	4.0	11.0	11.0	6.50	2271	+20.4
11	Ongono, Victor	1560	KEN	F	+56B	−23N	+47N	+53B	+42N	4.0	8.5	8.5	5.50	2204	+5.8
12	Mwangi Brian	1644	KEN	=13N	+36B	+32N	−4B	+14N	−3N	3.5	19.5	22.0	10.25	1568	-4.2
13	Frankline Odembe	0	KEN	=12B	+41N	+27B	−2N	+21B	−9N	3.5	19.0	21.0	9.75	1632	0.0
14	Okwiri Dhillo Emmanuel	0	KEN	+10N	+40B	−6B	=21N	−12B	+48N	3.5	17.5	19.0	9.00	1630	0.0
15	Mwashe Yvonne Adego	1478	KEN	−7N	=19B	+36N	−25B	+49N	+31B	3.5	16.0	17.5	8.25	2409	+26.4
16	Elias Cheruiyot	1470	KEN	+45N	−1B	−35N	=49B	+36N	+32B	3.5	15.0	16.5	7.75	1603	+14.0
17	Adriel Baraka	1455	KEN	+58N	−8B	−24N	+60B	=31N	+33B	3.5	13.0	13.0	4.25	1514	+10.8
18	Mwakuluma Stanley	0	KEN	+?N	+43B	=?N	−8B	+48N	−10B	3.5	12.0	12.0	3.50	1583	0.0
19	Mugisha Jean- Christophe	0	KEN	−38B	=15N	+55B	+33N	=?B	=?N	3.5	9.0	9.0	5.25	1535	0.0
20	Mathenge Ian Ngatia	1691	KEN	+46N	+48B	=4N	−1B	=25N	F	3.0	18.5	20.0	7.50	1587	-16.4
21	Mburu Ayden	1621	KEN	+56N	+23B	−5N	=14B	−13N	=27B	3.0	18.0	19.0	7.25	896	-16.0
22	Apamo Shem Mali	1618	KEN	F	−3N	+47B	+23N	+42B	−6N	3.0	16.5	16.5	6.50	1532	-8.4
23	Andrew Kibiwott Chepkerio	0	KEN	F	−21N	+11B	−22B	+24N	+38B	3.0	15.0	15.0	9.00	1634	0.0
24	Mbabani Allan	1683	UGA	−3B	+55N	+17B	−50N	−23B	+53N	3.0	13.5	14.5	5.50	1482	-10.4
25	Achol Agot	0	KEN	F	−2N	=?B	+15N	=20B	+39N	3.0	13.5	13.5	7.00	1684	-4.0
26	Grace Mercy	1474	KEN	+37B	−39N	+41B	−34N	+28B	F	3.0	13.0	15.0	7.50	856	-21.2
27	Gerhard Simiyu	0	KEN	+34N	=32B	−13N	−48B	+58B	=21N	3.0	13.0	13.5	5.75	1570	0.0
28	Onkeo, Ryan	0	KEN	−32N	−31B	+45N	+52B	−26N	+49B	3.0	11.5	12.5	4.50	1321	0.0
29	Jacob Hunter	0	KEN	−2B	+42N	+33B	+?N	−40B	F	3.0	11.5	11.5	4.50	1563	0.0
30	Gichana, Keyshawn Elmer	1524	KEN	+49N	−7B	F	F	+56N	+52B	3.0	9.0	10.0	3.50	2239	+15.2
31	Shah Hitansh Jeegar	1609	KEN	−9B	+28N	+51B	−3N	=17B	−15N	2.5	19.5	20.5	5.75	1282	-34.8
32	Rugunda Madiba	1535	UGA	+28B	=27N	−12B	+37N	−9B	−16N	2.5	17.5	20.0	7.00	757	-37.6
33	Brayden Kariuki	1489	KEN	+60N	=5B	−29N	−19B	+41B	−17N	2.5	17.0	17.0	4.50	1383	-11.2
34	Ombiro Clifford	1636	KEN	−27B	F	+44N	+26B	−4N	=35B	2.5	15.5	15.5	6.25	1637	+0.2
35	Mburu Stephen Ndungu	0	KEN	F	−4N	+16B	−?N	+43B	=34N	2.5	13.0	13.0	6.75	1556	0.0
36	Ndirangu Racheal	0	KEN	=?B	−12N	−15B	+58N	−16B	+47N	2.5	12.5	12.5	2.00	1361	-82.0
37	FIDE 554007330	0	—	−26N	+46B	=48N	−32B	F	+58N	2.5	9.5	9.5	3.25	1226	0.0
38	Njoroge, Dadson Rwamba	1586	KEN	+19N	F	+39B	−6N	−3B	−23N	2.0	18.5	18.5	5.50	1667	+4.4
39	Kyalo Peter	1675	KEN	F	+26B	−38N	−7B	+51N	−25B	2.0	13.5	13.5	4.00	1530	-7.6
40	Omunyin Robinson	1592	KEN	F	−14N	+53B	F	+29N	−5B	2.0	13.5	13.5	4.00	896	-14.4
41	Yassir Mohamed	0	KEN	+52N	−13B	−26N	+44B	−33N	−43B	2.0	13.0	14.0	3.00	1401	0.0
42	FIDE 10885153	0	—	F	−29B	+56N	+46B	−22N	−11B	2.0	13.0	13.0	3.00	789	0.0
43	Stefan, Vit	1502	KEN	F	−18N	+60B	−10B	−35N	+41N	2.0	12.0	12.0	2.00	858	-11.6
44	Marc-Antoine Ishimwe Ndagijimana	1461	KEN	+57B	−6N	−34B	−41N	F	+54B	2.0	11.5	11.5	2.00	848	-20.4
45	FIDE 10848304	0	—	−16B	−51N	−28B	+55N	−52N	+59B	2.0	9.5	9.5	1.00	655	0.0
46	FIDE 554003296	0	—	−20B	−37N	=58B	−42N	+60N	=57B	2.0	9.0	9.0	0.75	892	0.0
47	Maina Ethan	1404	KEN	−5N	+49B	−22N	−11B	=57N	−36B	1.5	16.0	17.0	2.00	825	-26.8
48	Kamau Timothy Mwangi	1487	KEN	F	−20N	=37B	+27N	−18B	−14B	1.5	15.5	15.5	4.25	892	-9.6
49	Prince Bjorn Kagongona	0	KEN	−30B	−47N	+59B	=16N	−15B	−28N	1.5	14.5	14.5	1.75	1152	0.0
50	Karl Kwezi Katongole	1509	UGA	F	−9N	F	+24B	F	−2N	1.0	16.5	16.5	3.00	1657	+16.0
51	FIDE 10848312	0	—	−1N	+45B	−31N	F	−39B	−?N	1.0	15.0	15.0	2.00	815	0.0
52	Matheka Jeremy	1438	KEN	−41B	F	−10N	−28N	+45B	−30N	1.0	14.0	14.0	2.00	792	-24.0
53	Mkoji Moses	0	KEN	−4B	F	−40N	+?B	−11N	−24B	1.0	14.0	14.0	0.00	1348	0.0
54	Edwin Gichana	0	KEN	−6B	+57N	F	F	−?B	−44N	1.0	13.0	13.0	1.00	753	0.0
55	Joseph Wambua	0	KEN	−8N	−24B	−19N	−45B	F	+60N	1.0	13.0	13.0	0.00	852	0.0
56	FIDE 10824448	0	—	−21B	−11N	−42B	+59N	−30B	F	1.0	12.0	12.0	0.00	769	0.0
57	Vyan Borthakur	0	KEN	−44N	−54B	−?N	F	=47B	=46N	1.0	6.5	6.5	1.75	1184	0.0
58	FIDE 10837868	0	—	−17B	F	=46N	−36B	−27N	−37B	0.5	13.5	13.5	1.00	655	0.0
59	FIDE 10839178	0	—	F	−10B	−49N	−56B	F	−45N	0.0	11.5	11.5	0.00	858	0.0
60	FIDE 10839186	0	—	−33B	F	−43N	−17N	−46B	−55B	0.0	11.0	11.0	0.00	682	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Deng Achol DengKEN
+54.4
5.0 pts · #1
2Amos WayneKEN
+46.0
5.5 pts · #3
3Sharille Roberts WamalwaKEN
+26.6
5.0 pts · #9

Top rating losers

1Ndirangu RachealKEN
-82.0
2.5 pts · #20
2Rugunda MadibaUGA
-37.6
2.5 pts · #52
3Shah Hitansh JeegarKEN
-34.8
2.5 pts · #41

Biggest upsets

R4+174 Elo gap
Karl Kwezi Katongole1509 beat Mbabani Allan1683
R6+131 Elo gap
Mwashe Yvonne Adego1478 beat Shah Hitansh Jeegar1609