Kenya National Youth and Cadet Chess Championship Playoffs - U10 Open

Open SwissStandard

28 players participated in this 11-round tournament, held from 10 Apr 2026 to 13 Apr 2026 in Nairobi, Kenya. Top 10 Elo average was 1477, and top seed was Jeremy Aden Duke (🇰🇪 KEN, 1628).

Marc-Antoine Ishimwe Ndagijimana (🇰🇪 KEN, 1493) won with 9.0/11, ahead of Rotich Darrien Kigen (8.5) and Andy Zane Wright (8.0). Ndagijimana shared the lead from round 6 and won solo starting round 7.

The biggest upset came in round 6: Jayden Kiogora Mwenda (1461) beat Jeremy Aden Duke (1628), a +167-point gap.

Location

🇰🇪Nairobi, Kenya

Dates

10 Apr 2026 → 13 Apr 2026

Time control

Standard: 90 minutes for the whole game

System

Swiss · 11 rounds

Top seed

🇰🇪Jeremy Aden Duke1628

Avg top 10

1,477

Participants

Federations · 1 represented

🇰🇪Kenya×14

Top 3

🥇
Marc-Antoine Ishimwe Ndagijimana
🇰🇪KEN·1493
9.0pts·1799perf+106.8
🥈
Rotich Darrien Kigen
🇰🇪KEN·1493
8.5pts·1573perf+31.6
🥉
Andy Zane Wright
🇰🇪KEN·1478
8.0pts·1631perf+57.6

How it unfolded

Top 6 · 11 rounds

Marc-Antoine Ishimwe Ndagijimana led from R7; +0.5-point edge over the runner-up.

Co-leaders

Ndagijimana9Kigen8.5Wright8Mwenda8Duke8Muratha7

R7 · LEADER CHANGE12 Apr

Marc-Antoine Ishimwe Ndagijimana takes the sole lead (6.0/7).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Marc-Antoine Ishimwe Ndagijimana beat Rotich Darrien Kigen (Black).

WIN STREAKS · 3 top finishers

Marc-Antoine Ishimwe Ndagijimana 5 wins (R5–R9)Rotich Darrien Kigen 4 wins (R1–R4)Andy Zane Wright 3 wins (R5–R7)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Marc-Antoine Ishimwe Ndagijimana	*	1	½	½
2Rotich Darrien Kigen	0	*	½	½
3Andy Zane Wright	½	½	*	1
4Jayden Kiogora Mwenda	½	½	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	R10	R11	Pts	Bu C1	Bu	SB	Perf	Δ
1	Marc-Antoine Ishimwe Ndagijimana	1493	KEN	+28B	+27N	=5B	=3N	+7B	+2N	+10B	+4N	+8B	−6N	+11B	9.0	65.0	65.0	50.00	1799	+106.8
2	Rotich Darrien Kigen	1493	KEN	+17N	+24B	+6N	+4N	=5B	−1B	+11N	=3B	=10N	+12B	+7N	8.5	68.5	71.5	51.50	1573	+31.6
3	Andy Zane Wright	1478	KEN	+22B	+14N	−4B	=1B	+13N	+11B	+5N	=2N	−6B	+8N	+10B	8.0	69.5	73.5	49.75	1631	+57.6
4	Jeremy Aden Duke	1628	KEN	+12N	+11B	+3N	−2B	+24N	−5B	+17N	−1B	+13N	+10B	+6B	8.0	68.0	71.0	45.50	1458	-53.2
5	Jayden Kiogora Mwenda	1461	KEN	+15N	+21B	=1N	+10B	=2N	+4N	−3B	+12B	+16N	−7B	+19N	8.0	66.5	70.5	47.25	1528	+25.2
6	Myles Kiyo Muratha	0	KEN	+16B	+9N	−2B	−11B	+21N	−8N	+18B	+14B	+3N	+1B	−4N	7.0	67.5	71.5	43.00	1487	0.0
7	Mukhwana Gene Pence Barasa	1413	KEN	=23N	+13B	−10N	+12B	−1N	+9N	−8B	+11B	+19N	+5N	−2B	6.5	65.5	69.0	37.25	1411	-1.6
8	Muli, Baraka Kimama	1409	KEN	+18N	=10B	−11N	−13B	+22N	+6B	+7N	+17B	−1N	−3B	+12N	6.5	63.0	67.0	36.00	1293	-30.8
9	Sean Ringera	1545	KEN	=13N	−6B	+20N	+23B	−10N	−7B	+22N	−19B	+14N	+16B	+17N	6.5	53.5	57.0	30.25	1292	-40.8
10	Mudenyo Baraka Jackson	1405	KEN	+25B	=8N	+7B	−5N	+9B	+16N	−1N	+13B	=2B	−4N	−3N	6.0	71.5	74.5	34.00	1441	+18.0
11	Mudenyo Jon Courson	1419	KEN	+26B	−4N	+8B	+6N	=16B	−3N	−2B	−7N	+20N	+13B	−1N	5.5	68.5	71.5	29.00	1248	-58.0
12	FIDE 554013356	0	—	−4B	+26N	+14B	−7N	+18B	=19N	+16B	−5N	+15B	−2N	−8B	5.5	63.0	66.0	26.25	1200	0.0
13	FIDE 10856218	0	—	=9B	−7N	+25B	+8N	−3B	+15N	+19B	−10N	−4B	−11N	+27B	5.5	60.0	61.0	23.75	1241	0.0
14	FIDE 10899936	0	—	+20N	−3B	−12N	+26B	−17N	+21B	+24B	−6N	−9B	=15N	+23B	5.5	52.5	55.5	20.75	712	0.0
15	FIDE 554008255	0	—	−5B	+25N	−16B	−18N	+27N	−13B	+23N	+24B	−12N	=14B	+26B	5.5	47.0	48.0	16.25	648	0.0
16	Prince Bjorn Kagongona	1434	KEN	−6N	+23B	+15N	+21B	=11N	−10B	−12N	+20B	−5B	−9N	=22B	5.0	56.5	60.0	22.25	1136	-54.8
17	Leo Mwirigi	0	KEN	−2B	+?N	−19N	+27B	+14B	+24N	−4B	−8N	−18B	+26N	−9B	5.0	51.5	51.5	12.50	719	0.0
18	FIDE 554018862	0	—	−8B	+28N	−24N	+15B	−12N	+26B	−6N	+22B	+17N	−19B	−20N	5.0	48.5	48.5	17.50	609	0.0
19	FIDE 554018889	0	—	−21N	F	+17B	−24B	+23N	=12B	−13N	+9N	−7B	+18N	−5B	4.5	52.5	52.5	22.75	1348	0.0
20	FIDE 10853200	0	—	−14B	=22N	−9B	−25N	F	+23B	+21N	−16N	−11B	+27N	+18B	4.5	43.0	43.0	15.50	666	0.0
21	Fulgence Mwarongo Mwarigha	0	KEN	+19B	−5N	+27B	−16N	−6B	−14N	−20B	+26B	+24N	−23N	−25B	4.0	47.0	48.0	11.50	648	0.0
22	FIDE 10893636	0	—	−3N	=20B	−23N	+28B	−8B	+25N	−9B	−18N	+27B	F	=16N	4.0	43.0	43.0	8.75	1145	0.0
23	FIDE 554007879	0	—	=7B	−16N	+22B	−9N	−19B	−20N	−15B	F	+25N	+21B	−14N	3.5	49.0	49.0	14.25	1191	0.0
24	FIDE 10899537	0	—	+?B	−2N	+18B	+19N	−4B	−17B	−14N	−15N	−21B	−25N	F	3.0	49.0	49.0	9.50	761	0.0
25	FIDE 10899758	0	—	−10N	−15B	−13N	+20B	−26N	−22B	F	−27N	−23B	+24B	+21N	3.0	40.0	40.0	11.50	605	0.0
26	FIDE 10838147	0	—	−11N	−12B	+28B	−14N	+25B	−18N	+27B	−21N	F	−17B	−15N	3.0	40.0	40.0	4.00	619	0.0
27	FIDE 554018870	0	—	F	−1B	−21N	−17N	−15B	F	−26N	+25B	−22N	−20B	−13N	1.0	43.5	43.5	3.00	693	0.0
28	FIDE 10857478	0	—	−1N	−18B	−26N	−22N	F	F	F	F	F	F	F	0.0	26.5	26.5	0.00	693	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Marc-Antoine Ishimwe NdagijimanaKEN
+106.8
9.0 pts · #1
2Andy Zane WrightKEN
+57.6
8.0 pts · #2
3Rotich Darrien KigenKEN
+31.6
8.5 pts · #3

Top rating losers

1Mudenyo Jon CoursonKEN
-58.0
5.5 pts · #9
2Prince Bjorn KagongonaKEN
-54.8
5.0 pts · #15
3Jeremy Aden DukeKEN
-53.2
8.0 pts · #7

Biggest upsets

R6+167 Elo gap
Jayden Kiogora Mwenda1461 beat Jeremy Aden Duke1628
R5+140 Elo gap
Mudenyo Baraka Jackson1405 beat Sean Ringera1545
R8+135 Elo gap
Marc-Antoine Ishimwe Ndagijimana1493 beat Jeremy Aden Duke1628