2025 African Schools Individual Chess Championship - Under 11 Open

Open SwissStandard

82 players participated in this 9-round tournament, held from 23 May 2025 to 28 May 2025 in Mombasa, Kenya. 8 federations represented. Top 10 Elo average was 1653, and top seed was Wabwire Ronald (🇺🇬 UGA, 1907).

Manyeki Nathaniel (🇰🇪 KEN, 1788) won with 8.0/9, ahead of Muli Faraja Mumo (8.0) and Wabwire Ronald (7.5). Nathaniel shared the lead from round 1, winning on tie-break.

The biggest upset came in round 4: Sianyinda Lubomba (1460) beat Emilio Goncalves (1751), a +291-point gap.

Location

🇰🇪Mombasa, Kenya

Dates

23 May 2025 → 28 May 2025

Time control

Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1

System

Swiss · 9 rounds

Top seed

🇺🇬Wabwire Ronald1907

Avg top 10

1,653

Participants

Federations · 8 represented

🇰🇪Kenya×28

🇿🇲Zambia×3

🇺🇬Uganda×2

🇬🇭Ghana×1

🇲🇼Malawi×1

🇲🇬Madagascar×1

🇧🇼Botswana×1

🇿🇦South Africa×1

Top 3

🥇
Manyeki Nathaniel
🇰🇪KEN·1788
8.0pts·1807perf+6.0
🥈
Muli Faraja Mumo
🇰🇪KEN·1659
8.0pts·1781perf+25.2
🥉
Wabwire Ronald
🇺🇬UGA·1907
7.5pts·1660perf-43.6

How it unfolded

Top 6 · 9 rounds

Tight race until R6; 2 players tied at 8.0/9, decided on Buchholz. Title race narrowed from 6 co-leaders at R4 to 2 at the finish.

Co-leaders

Nathaniel8Mumo8Ronald7.5Dinodia7.5Jnr7Waikwa7

R6–R9 · LEAD HELD

Manyeki Nathaniel held the sole lead from R6 through R9 without losing it.

R9 · TIEBREAK CLUSTER

2 players finish on 8.0/9. Nathaniel takes the title on Buchholz Cut1 (49.5).

R9 · HEAD-TO-HEAD · WINNER VS 2ND

Manyeki Nathaniel lost to Muli Faraja Mumo (White).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Manyeki Nathaniel	*	0	—	—
2Muli Faraja Mumo	1	*	—	—
3Wabwire Ronald	—	—	*	—
4Priyanshu Dinodia	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Manyeki Nathaniel	1788	KEN	+71B	+54N	+15B	+82N	+8B	+7N	+10B	+6N	−2B	8.0	49.5	49.5	41.50	1807	+6.0
2	Muli Faraja Mumo	1659	KEN	+75N	+60B	+50N	+40B	−10N	+39B	+5B	+8N	+1N	8.0	48.0	51.0	44.50	1781	+25.2
3	Wabwire Ronald	1907	UGA	+33N	+39B	+47N	=5B	+13N	=10B	=19N	+28N	+16B	7.5	48.5	53.5	43.75	1660	-43.6
4	Priyanshu Dinodia	1714	ZAM	+59B	+72N	+29B	=19N	+18B	=5N	=28B	+15N	+10B	7.5	47.5	50.5	41.25	1650	-14.0
5	Serede Elvis Mugilwa Jnr	1497	KEN	+66B	+37N	+42B	=3N	+11B	=4B	−2N	+43B	+20N	7.0	51.0	55.0	39.50	1755	+48.8
6	Yator Mugo Waikwa	1446	KEN	+26N	+44B	+49N	−7B	+52N	+22B	+12N	−1B	+18B	7.0	49.5	54.5	39.50	1612	+32.4
7	Shaurya Danave	1529	ZAM	+81B	+70N	+25B	+6N	+28B	−1B	+14N	−16N	+21B	7.0	48.5	49.5	35.00	1690	+24.8
8	Ayaan,Chandarana	1528	MAD	+74N	+73B	+46N	+17B	−1N	+43B	+23N	−2B	+19N	7.0	47.5	50.5	34.50	1514	-4.8
9	Jean-Christophe Mugisha	1510	KEN	+61B	−11N	+79B	+45N	−14B	+71N	+36B	+42N	+41B	7.0	40.5	42.5	29.50	951	-8.4
10	Jayson Kimani Ndarwa	1527	KEN	+27B	+14N	+51B	+30N	+2B	=3N	−1N	+29B	−4N	6.5	54.5	59.5	40.25	1679	+26.0
11	Goncalves, Emilio	1751	RSA	+77N	+9B	+24N	−28B	−5N	+33B	+39N	=14B	+29N	6.5	48.0	50.5	34.75	1369	-57.6
12	Acheampong Jedidiah Nana Osei	1575	GHA	+78B	=34N	+41B	+32N	=19B	=29N	−6B	+38N	+35B	6.5	45.5	47.5	32.00	1267	-33.2
13	Kiplangat Baraka	1418	KEN	+80B	=41N	+57B	+34N	−3B	+32N	−15B	+56B	+30N	6.5	44.5	46.5	30.00	1018	-3.2
14	Jesse Jayden	0	KEN	+20N	−10B	+?N	+?B	+9N	+40B	−7B	=11N	+28B	6.5	43.5	43.5	26.75	1558	0.0
15	Njenga Dayson Irari	0	KEN	+?B	+?N	−1N	+22B	=58N	+30B	+13N	−4B	+32N	6.5	43.5	43.5	25.75	1515	0.0
16	Agape Cherutich Chumba	0	KEN	+?N	−22B	+74N	+33B	=56N	+64B	+38N	+7B	−3N	6.5	43.0	43.0	27.25	1718	0.0
17	FIDE 554001366	0	—	+?B	+?N	+35B	−8N	=30B	+37N	−29B	+57N	+48B	6.5	38.5	38.5	23.25	739	0.0
18	Waweru Trevor Kipngetich	1549	KEN	+43N	=32B	+23N	+36B	−4N	+20B	+56N	=19B	−6N	6.0	48.5	53.0	32.75	1271	-40.8
19	Wema Dylan	1473	KEN	+68N	+62B	+58N	=4B	=12N	+67B	=3B	=18N	−8B	6.0	47.0	50.5	29.75	1579	+22.4
20	FIDE 10884980	0	—	−14B	+78N	+70B	+21N	+?B	−18N	+25B	+?N	−5B	6.0	36.5	36.5	17.00	723	0.0
21	FIDE 554001480	0	—	+?N	−23B	+62N	−20B	+?N	+31B	+?N	+22B	−7N	6.0	34.5	34.5	15.50	729	0.0
22	FIDE 10845747	0	—	+?B	+16N	+82B	−15N	+?B	−6N	+?B	−21N	+39N	6.0	31.0	31.0	11.50	1476	0.0
23	Turyatemba Augustine	0	UGA	+45B	+21N	−18B	+?N	+?B	+?N	−8B	−?N	+43N	6.0	29.0	29.0	16.00	1301	0.0
24	FIDE 554003261	0	—	+?B	+?N	−11B	−51N	+?B	+26N	−42B	+?N	+44B	6.0	27.5	27.5	11.00	951	0.0
25	FIDE 10861939	0	—	+?N	+?B	−7N	−?B	+62N	+44B	−20N	+?B	+51N	6.0	27.0	27.0	14.00	729	0.0
26	FIDE 554001668	0	—	−6B	+?N	−?B	+?N	+?N	−24B	+?N	+47B	+50N	6.0	23.0	23.0	10.00	646	0.0
27	FIDE 554001633	0	—	−10N	−?B	+?N	−?B	+?N	+?B	+?N	+49B	+40N	6.0	16.5	16.5	10.00	726	0.0
28	Sianyinda Lubomba	1460	ZAM	+63B	+52N	+31B	+11N	−7N	+48B	=4N	−3B	−14N	5.5	50.5	54.5	29.75	1627	+26.4
29	FIDE 10848312	0	—	+?B	+?N	−4N	+31B	+?N	=12B	+17N	−10N	−11B	5.5	39.0	39.0	15.25	1321	0.0
30	Shem Ngugi	0	KEN	+?B	+?N	+?B	−10B	=17N	−15N	+59B	+?N	−13B	5.5	30.5	30.5	7.75	1337	0.0
31	FIDE 10877452	0	—	+?B	+?B	−28N	−29N	+54B	−21N	+?B	+45N	=?B	5.5	26.5	26.5	9.50	661	0.0
32	Lumula Jason Jude	0	KEN	+?B	=18N	+?B	−12B	+?N	−13B	+?N	+?N	−15B	5.5	25.5	25.5	3.00	1411	0.0
33	FIDE 10857796	0	—	−3B	+?N	+?B	−16N	+?B	−11N	+?B	=55N	+?B	5.5	25.0	25.0	2.25	1029	0.0
34	Jayden Kihuria	0	KEN	+?N	=12B	+?N	−13B	−36N	−?B	+?N	+58B	+?N	5.5	23.0	23.0	7.75	1208	0.0
35	Zein Yassir	0	KEN	+76N	+?B	−17N	+?B	−39N	=?B	+?N	+?B	−12N	5.5	21.0	21.0	3.00	781	0.0
36	Omollo Tendai Gichuhi	0	KEN	+?B	=?N	+?B	−18N	+34B	+?B	−9N	+?N	−?B	5.5	18.5	18.5	5.50	706	0.0
37	FIDE 10847103	0	—	+?N	−5B	=?N	+?B	+?N	−17B	−?N	+?B	+54B	5.5	18.0	18.0	4.50	671	0.0
38	Jayden Hiyari Mwamtsi	0	KEN	−?B	+?N	+?B	=?B	+?N	+?N	−16B	−12B	+57N	5.5	17.5	17.5	4.50	1320	0.0
39	FIDE 15221415	0	—	+55B	−3N	+?B	+?N	+35B	−2N	−11B	+61N	−22B	5.0	42.0	42.0	14.00	972	0.0
40	FIDE 10858288	0	—	+?B	+48N	+?B	−2N	+42B	−14N	+45B	−41N	−27B	5.0	40.5	40.5	15.00	857	0.0
41	Namangale .Alipo	0	MAW	F	=13B	−12N	+?N	=?B	+?B	+47N	+40B	−9N	5.0	30.0	30.0	13.25	1235	0.0
42	Njiriri D. Muiruri	0	KEN	+?N	+?B	−5N	+50B	−40N	+?B	+24N	−9B	−?N	5.0	30.0	30.0	11.00	711	0.0
43	Kaboyaone Karl Amour	0	BOT	−18B	+61N	+?B	+?B	+82N	−8N	+?B	−5N	−23B	5.0	30.0	30.0	4.00	1435	0.0
44	Nirwan Hariri Bachu	0	KEN	+?B	−6N	+54B	−?N	+46B	−25N	+?B	+?N	−24N	5.0	28.5	28.5	9.50	646	0.0
45	FIDE 554000157	0	—	−23N	+?B	+?N	−9B	+49N	+?B	−40N	−31B	+?N	5.0	28.5	28.5	5.00	725	0.0
46	FIDE 554001471	0	—	+?B	+?N	−8B	F	−44N	+?N	−63B	+73N	+61B	5.0	28.0	28.0	7.00	739	0.0
47	FIDE 10858938	0	—	+?B	+?N	−3B	−52N	+?B	+63N	−41B	−26N	+?B	5.0	27.5	27.5	4.00	1107	0.0
48	FIDE 10842551	0	—	+?N	−40B	+?N	F	+?B	−28N	+?B	+50B	−17N	5.0	27.0	27.0	5.00	661	0.0
49	Karanja Ryan Roy	0	KEN	+?B	+?N	−6B	−?N	−45B	+70N	+71B	−27N	+?B	5.0	24.0	24.0	6.00	646	0.0
50	FIDE 10859217	0	—	+?B	+?N	−2B	−42N	+?B	+?N	+?B	−48N	−26B	5.0	24.0	24.0	0.00	857	0.0
51	Mcray Macharia Kihoi	0	KEN	+?N	+?B	−10N	+24B	−?B	=?N	=?B	+?N	−25B	5.0	18.5	18.5	6.00	1346	0.0
52	Master Walter Aira	0	KEN	+?N	−28B	+?N	+47B	−6B	−?N	+?B	+?N	−?B	5.0	17.5	17.5	5.00	654	0.0
53	FIDE 554001676	0	—	−?N	+?B	−?N	−?B	+?N	+?B	−?N	+?B	+?N	5.0	0.0	0.0	0.00	644	0.0
54	FIDE 554001498	0	—	+?N	−1B	−44N	+?B	−31N	=?B	+?N	+64B	−37N	4.5	28.0	28.0	4.00	988	0.0
55	FIDE 10881190	0	—	−39N	+77B	−?N	+65B	−76N	+?B	+68N	=33B	−?N	4.5	23.5	23.5	12.75	642	0.0
56	FIDE 10871543	0	—	−?N	+?B	+?B	+?N	=16B	+?N	−18B	−13N	−?B	4.5	19.0	19.0	3.25	684	0.0
57	FIDE 10846646	0	—	=?N	+?B	−13N	+?B	−?N	+?B	+?N	−17B	−38B	4.5	18.5	18.5	0.00	618	0.0
58	FIDE 10899162	0	—	+?B	+?N	−19B	+?N	=15B	−?N	−?B	−34N	+?B	4.5	18.0	18.0	3.25	673	0.0
59	Joseph Wambua	0	KEN	−4N	+?B	−?N	=?B	+?N	+?B	−30N	−?N	+?B	4.5	13.0	13.0	0.00	779	0.0
60	FIDE 10899200	0	—	+?B	−2N	−?B	−?N	=?B	=?N	+?B	=?N	+?B	4.5	8.0	8.0	0.00	857	0.0
61	FIDE 554001897	0	—	−9N	−43B	+75N	+?B	=68N	=?B	+65N	−39B	−46N	4.0	32.5	32.5	8.75	725	0.0
62	FIDE 10859071	0	—	+?B	−19N	−21B	+72N	−25B	−?N	−?B	+?N	+70B	4.0	24.0	24.0	6.00	673	0.0
63	FIDE 10866809	0	—	−28N	F	−?B	+?N	+?B	−47B	+46N	+?N	−?B	4.0	15.5	15.5	5.00	1452	0.0
64	FIDE 554001757	0	—	+?B	−?N	+72B	=?N	+?B	−16N	−?B	−54N	=?B	4.0	14.0	14.0	3.00	642	0.0
65	Kayden Sankau Oloitiptip	0	KEN	+82B	+?N	−?B	−55N	+?B	−?N	−61B	−?N	+?B	4.0	8.5	8.5	0.00	1526	0.0
66	FIDE 554001641	0	—	−5N	+?B	−?N	+?B	−?N	−?B	+?N	−?B	+?N	4.0	7.0	7.0	0.00	697	0.0
67	Munge Myles	0	KEN	+?B	+82N	−?B	+?N	+?B	−19N	−?B	−?N	−?B	4.0	6.0	6.0	0.00	1490	0.0
68	FIDE 554001650	0	—	−19B	−?N	+?B	+?N	=61B	=?N	−55B	=?N	−?B	3.5	14.5	14.5	2.00	673	0.0
69	FIDE 554001684	0	—	−?B	=?N	−?N	+?B	−?N	+?B	−?N	−?B	+?N	3.5	0.0	0.0	0.00	642	0.0
70	FIDE 10856854	0	—	+?N	−7B	−20N	−?B	+?N	−49B	−?N	+?B	−62N	3.0	22.0	22.0	0.00	729	0.0
71	FIDE 554001587	0	—	−1N	−?B	+?N	+?B	+?N	−9B	−49N	−?B	−?N	3.0	20.0	20.0	0.00	857	0.0
72	Jabali Auki Omolo	0	KEN	+?N	−4B	−64N	−62B	+?N	=?B	−?N	−?B	=?N	3.0	15.5	15.5	0.00	913	0.0
73	FIDE 554001722	0	—	+?B	−8N	−?B	=?N	+79B	−?N	=?N	−46B	−?N	3.0	14.0	14.0	2.00	739	0.0
74	FIDE 554001625	0	—	−8B	+?N	−16B	−?N	+?B	+?N	−?B	−?N	−?B	3.0	13.5	13.5	0.00	739	0.0
75	FIDE 10863060	0	—	−2B	−?N	−61B	+?N	−?B	+?N	−?B	+?N	−?B	3.0	12.0	12.0	0.00	857	0.0
76	FIDE 554001579	0	—	−35B	+?N	+?B	−?N	+55B	−?N	−?B	−?N	−?B	3.0	10.0	10.0	4.50	642	0.0
77	FIDE 554001595	0	—	−11B	−55N	−?B	+?N	−?B	+?N	=?B	−?N	−?B	2.5	11.0	11.0	0.00	951	0.0
78	FIDE 554001609	0	—	−12N	−20B	−?N	−?N	−?B	F	+?B	−?N	+?B	2.0	12.5	12.5	0.00	781	0.0
79	FIDE 554001846	0	—	=?N	+?B	−9N	−?B	−73N	−?B	−?N	=?B	−?N	2.0	10.0	10.0	0.00	725	0.0
80	FIDE 10867139	0	—	−13N	−?B	−?N	+?N	+?B	−?B	−?N	−?B	−?N	2.0	6.5	6.5	0.00	618	0.0
81	FIDE 554001617	0	—	−7N	−?B	−?N	+?B	−?N	−?B	−?N	−?B	F	1.0	7.0	7.0	0.00	729	0.0
82	Okwemba Elvis	1505	KEN	−65N	−67B	−22N	−1B	−43B	F	F	F	F	0.0	27.0	27.0	0.00	988	-6.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Serede Elvis Mugilwa JnrKEN
+48.8
7.0 pts · #7
2Yator Mugo WaikwaKEN
+32.4
7.0 pts · #8
3Sianyinda LubombaZAM
+26.4
5.5 pts · #13

Top rating losers

1Goncalves, EmilioRSA
-57.6
6.5 pts · #15
2Wabwire RonaldUGA
-43.6
7.5 pts · #2
3Waweru Trevor KipngetichKEN
-40.8
6.0 pts · #26

Biggest upsets

R4+291 Elo gap
Sianyinda Lubomba1460 beat Goncalves, Emilio1751
R5+254 Elo gap
Serede Elvis Mugilwa Jnr1497 beat Goncalves, Emilio1751
R5+132 Elo gap
Jayson Kimani Ndarwa1527 beat Muli Faraja Mumo1659