CTC Open Chess Championship 2025

Open SwissStandard

100 players participated in this 8-round tournament, held from 21 Nov 2025 to 23 Nov 2025 in Nairobi, Kenya. 7 titled players from 2 federations. Top 10 Elo average was 2015, and top seed was Peter Majur Manyang (🇸🇸 SSD, FM, 2104).

Manyok Chaderek P (🇸🇸 SSD, 2098) won with 6.5/8, ahead of Madol Garang Panthou Joh (6.5) and Ben Magana (6.0). P shared the lead from round 6, winning on tie-break.

The biggest upset came in round 5: Kyalo Cynthia Wayua (1440) beat Kelly Mwaniki (1850), a +410-point gap.

Location

🇰🇪Nairobi, Kenya

Dates

21 Nov 2025 → 23 Nov 2025

Time control

Standard: 90 minutes for the whole game

System

Swiss · 8 rounds

Top seed

🇸🇸FMPeter Majur Manyang2104

Avg top 10

2,015

Participants

100

Titled players · 7

FM×1

CM×2

WFM×3

WCM×1

Federations · 2 represented

🇰🇪Kenya×82

🇸🇸South Sudan×6

Top 3

🥇
Manyok Chaderek P
🇸🇸SSD·2098
6.5pts·2174perf+14.8
🥈
CMMadol Garang Panthou Joh
🇸🇸SSD·2100
6.5pts·2146perf+10.2
🥉
CMBen Magana
🇰🇪KEN·2024
6.0pts·2141perf+24.4

How it unfolded

Top 6 · 8 rounds

Tight race until R4; 2 players tied at 6.5/8, decided on Buchholz.

Co-leaders

Manyok Chaderek6.5Joh6.5Ezekiel6Magana6Deng Khor Kuol6Omolo6

R4–R8 · LEAD HELD

Manyok Chaderek P held the sole lead from R4 through R8 without losing it.

R8 · TIEBREAK CLUSTER

2 players finish on 6.5/8. P takes the title on Buchholz Cut1 (38.0).

WIN STREAKS · 2 top finishers

Manyok Chaderek P 4 wins (R1–R4)Karani Ezekiel 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Manyok Chaderek P	*	—	—	0
2CMMadol Garang Panthou Joh	—	*	—	1
3Karani Ezekiel	—	—	*	0
4CMBen Magana	1	0	1	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	Pts	Bu C1	Bu	SB	Perf	Δ
1	Manyok Chaderek P	2098	SSD	+18B	+38N	+6B	+31N	−3B	+32N	+7B	=4N	6.5	38.0	42.0	33.00	2174	+14.8
2	Madol Garang Panthou JohCM	2100	SSD	+22N	+20B	−5N	+19B	+64N	=14B	+31N	+3N	6.5	36.5	39.5	31.00	2146	+10.2
3	Magana, BenCM	2024	KEN	+40N	+11B	+39N	=4B	+1N	=31B	+8N	−2B	6.0	39.0	43.0	31.25	2141	+24.4
4	Deng Khor Kuol, Michael	1972	SSD	+16B	+41N	+27B	=3N	+15B	−7N	+14N	=1B	6.0	38.5	42.5	30.25	2132	+33.4
5	Kaloki, Hawi	1960	KEN	+23B	+32N	+2B	−15N	=14B	=18N	+30B	+19N	6.0	36.5	41.0	31.00	2083	+31.8
6	Omolo, Kenneth	1939	KEN	+28N	+17B	−1N	−32B	+44B	+23N	+18B	+22N	6.0	36.0	40.0	29.00	1981	+10.4
7	Mabior Anyuat Mabior	1985	SSD	+21N	−39B	+43N	+27N	+40B	+4B	−1N	+17B	6.0	35.5	39.5	29.00	2023	+10.0
8	Karani Ezekiel	1921	KEN	+24N	+62B	−31N	+17B	+49N	+16B	−3B	+26N	6.0	34.5	37.5	27.00	1974	+13.0
9	Ndirangu, Joyce NyaruaiWFM	1828	KEN	+48N	−31B	+24N	−22B	+70N	+60B	+21N	+15B	6.0	32.0	35.0	25.50	1960	+27.4
10	Shile, Lenny Mataiga	1936	KEN	+100B	=34N	+86B	−14N	=26B	+28N	+40B	+16N	6.0	30.5	30.5	20.75	1939	+1.8
11	Chumba Allan	1897	KEN	+68B	−3N	+46B	=18N	=21B	=35N	+62B	+34N	5.5	32.0	35.0	21.75	1899	+1.2
12	Kelly Mwaniki	1850	KEN	F	=29N	+50B	+66N	−59B	+36N	+35B	+31B	5.5	29.0	32.0	23.00	1828	+1.2
13	Omondi Stanley	1750	KEN	−93B	+65N	=38B	+36N	=25B	+86N	+32B	=14N	5.5	28.0	29.5	21.00	1878	+26.0
14	Okonga, Hugh Misiko	1906	KEN	+60N	=15B	+87N	+10B	=5N	=2N	−4B	=13B	5.0	38.5	40.5	23.00	1981	+14.6
15	Peter Majur ManyangFM	2104	SSD	+30B	=14N	+45B	+5B	−4N	+34N	=19B	−9N	5.0	37.5	41.5	24.50	1952	-27.4
16	Cheruiyot Elly	1750	KEN	−4N	+44B	+52N	+39B	+20N	−8N	+27B	−10B	5.0	36.0	40.0	22.00	1902	+32.4
17	Kaloki, ZuriWFM	1807	KEN	+29B	−6N	+68B	−8N	+45B	+47N	+25B	−7N	5.0	36.0	39.0	21.00	1840	+9.9
18	Wanjiru Chrisphinus	1778	KEN	−1N	+49B	+48N	=11B	+58N	=5B	−6N	+65B	5.0	35.5	38.5	20.25	1848	+15.4
19	Chege Kairu	1870	KEN	=46B	+25N	+61B	−2N	+29B	+59N	=15N	−5B	5.0	35.0	38.5	21.50	1869	+3.4
20	Njuki, Gabriel	1907	KEN	+35B	−2N	+23B	+30N	−16B	+68N	−26B	+46N	5.0	35.0	38.0	21.50	1870	-7.4
21	Nicole Albright	1751	KEN	−7B	+36N	=47B	+44N	=11N	+54B	−9B	+45N	5.0	34.0	38.0	21.25	1720	-3.0
22	Ngony, John Thon	1789	KEN	−2B	+64N	+51B	+9N	−31B	+65N	+41B	−6B	5.0	34.0	37.0	20.00	1878	+19.4
23	Mitei, Cosmas	1742	KEN	−5N	+53B	−20N	+37N	+50B	−6B	+63N	+43B	5.0	33.5	36.5	19.50	1713	-1.6
24	Kagambi, Samuel	1713	KEN	−8B	+59N	−9B	+51N	+90B	−25N	+44B	+41N	5.0	32.5	34.5	17.50	1768	+26.8
25	Nashipae BellaWCM	1883	KEN	=42N	−19B	+72B	+47N	=13N	+24B	−17N	+62B	5.0	31.5	34.5	19.75	1759	-42.8
26	Mugambi Christian Mwamba	1767	KEN	−31N	+63B	=33N	+87B	=10N	+78B	+20N	−8B	5.0	31.5	33.5	17.75	1809	+14.4
27	Sagwa, Hillary	1823	KEN	+71B	+93N	−4N	−7B	+43N	+64B	−16N	+42B	5.0	31.0	32.5	15.50	1816	+2.4
28	Amwai, Tom	1730	KEN	−6B	+70N	=93B	+69N	+38B	−10B	=33N	+50N	5.0	30.5	32.0	17.00	1804	+16.8
29	Mathenge Gichuga	1563	KEN	−17N	=12B	+56N	+78B	−19N	+80B	=38N	+39B	5.0	30.0	32.5	17.75	1773	+47.6
30	Kagambi, Lawrence	1804	KEN	−15N	+58B	+62N	−20B	+67N	+49B	−5N	+64B	5.0	29.5	32.5	16.50	1799	+1.8
31	Ngong Samuel Gai	2001	SSD	+26B	+9N	+8B	−1B	+22N	=3N	−2B	−12N	4.5	41.5	46.5	25.00	1965	-6.4
32	Wanyoike Collins Mburu	1817	KEN	+52N	−5B	+42N	+6N	+65B	−1B	−13N	=33B	4.5	36.5	39.5	19.25	1796	-2.2
33	Nthiga Blair Wema	1574	KEN	−41B	+37N	=26B	+45N	−34B	+77N	=28B	=32N	4.5	31.5	34.0	18.25	1678	+27.6
34	Waweru Davidson Mugo	1811	KEN	−61N	=10B	+81N	+67B	+33N	−15B	+58N	−11B	4.5	31.0	33.5	16.50	1802	+4.0
35	Muli Faraja Mumo	1708	KEN	−20N	−43B	+77N	+48B	+87N	=11B	−12N	+59B	4.5	30.0	32.0	14.75	1635	-22.8
36	Jasmine Akinyi Ochieng	1503	KEN	+54N	−21B	+79N	−13B	=80N	−12B	+78N	+77B	4.5	27.5	30.0	12.75	984	-20.8
37	James Mungai	0	KEN	+88N	−33B	+63N	−23B	−42N	+70B	=67N	+58B	4.5	26.0	28.0	13.00	1568	0.0
38	Mongeli, SashaWFM	1868	KEN	F	−1B	=13N	+43B	−28N	+66N	=29B	+51N	4.0	33.0	33.0	16.25	1719	-21.8
39	Akhanyinya, Bryan Toboso	1823	KEN	+51B	+7N	−3B	−16N	+69B	−62N	+59B	−29N	4.0	32.5	35.5	16.50	1686	-25.4
40	Nhial Jeremiah Machar	1774	KEN	−3B	+66N	+71B	F	−7N	+63B	−10N	+47N	4.0	32.0	35.0	13.00	1756	-0.8
41	Mulaga, Geoffrey	1823	KEN	+33N	−4B	+60N	F	+88B	+42B	−22N	−24B	4.0	32.0	34.0	14.00	1746	-12.0
42	Kimani wanjiru	1647	KEN	=25B	=46N	−32B	+53N	+37B	−41N	+88B	−27N	4.0	31.0	33.0	15.00	1655	0.0
43	Chagwaya Brenda	1446	KEN	+82B	+35N	−7B	−38N	−27B	+89N	+48B	−23N	4.0	31.0	33.0	13.00	1637	+22.8
44	Elias Cheruiyot	1498	KEN	+75N	−16N	+94B	−21B	−6N	+56B	−24N	+73B	4.0	31.0	32.0	11.00	978	-27.6
45	Baden Fred Eric	1463	KEN	+55B	+100N	−15N	−33B	−17N	+79B	+52N	−21B	4.0	30.0	30.0	10.50	1593	+31.2
46	Ochieng James	1646	KEN	=19N	=42B	−11N	+83B	−54N	+85B	+69N	−20B	4.0	29.0	31.5	12.50	1705	+16.8
47	Jacob Mandela	1512	KEN	=77N	+83B	=21N	−25B	+79N	−17B	+55N	−40B	4.0	28.0	30.5	12.75	1579	+10.0
48	Kagambi, Angel	1596	KEN	−9B	+97N	−18B	−35N	+53B	+83B	−43N	+87N	4.0	28.0	29.0	9.50	1481	-42.0
49	Adrian Kariuki	1520	KEN	+74B	−18N	+97B	+86N	−8B	−30N	−50B	+76N	4.0	28.0	29.0	9.00	930	-42.4
50	Kamoni Elvin	1417	KEN	+95N	−60B	−12N	+55B	−23N	+98B	+49N	−28B	4.0	28.0	28.0	9.00	1460	+4.8
51	Kagambi, Jeremiah	1576	KEN	−39N	+79B	−22N	−24B	+75N	+87B	+54N	−38B	4.0	27.5	29.5	11.50	998	-34.8
52	Shannon Bulimo	1568	KEN	−32B	+57N	−16B	−68N	+92B	+81N	−45B	+74N	4.0	26.0	28.0	11.50	880	-29.4
53	Jayden Kiogora Mwenda	1464	KEN	+92N	−23N	=57B	−42B	−48N	+82N	+72B	=60B	4.0	26.0	28.0	11.25	1352	-17.6
54	Dancun Silali	0	KEN	−36B	+80N	−66B	+84N	+46B	−21N	−51B	+88N	4.0	25.5	27.5	11.00	1451	0.0
55	Kamau Kange	0	KEN	−45N	+85B	F	−50N	+71B	+90N	−47B	+63B	4.0	23.5	25.5	10.50	1464	0.0
56	Ayabei Shadrack	0	KEN	−58N	+91B	−29B	+89N	−68B	−44N	+99B	+66N	4.0	22.5	22.5	7.00	1316	0.0
57	Manuel Mwine Bujara	0	KEN	+67N	−52B	=53N	−63B	−77B	+84N	=66B	+81N	4.0	22.0	24.5	11.50	1424	0.0
58	Mubi Hillary	1529	KEN	+56B	−30N	+74B	=59N	−18B	+72N	−34B	−37N	3.5	29.5	32.5	11.75	1387	-25.6
59	Kyalo Cynthia Wayua	1440	KEN	+91N	−24B	+98N	=58B	+12N	−19B	−39N	−35N	3.5	29.5	29.5	9.25	1549	+20.8
60	Gwada, James	1694	KEN	−14B	+50N	−41B	+71N	+81B	−9N	−65B	=53N	3.5	29.0	31.5	11.50	1524	-62.8
61	Tyron Gaya	0	KEN	+34B	+75B	−19N	F	−63N	=67B	−71N	+78B	3.5	24.5	27.0	11.50	1469	0.0
62	Onyango Shirlyn Gathoni	1633	KEN	F	−8N	−30B	+72N	+82B	+39B	−11N	−25N	3.0	34.0	36.5	9.50	1627	-6.1
63	KipkoECH Hekima	1512	KEN	+73B	−26N	−37B	+57N	+61B	−40N	−23B	−55N	3.0	30.0	33.0	10.50	960	-23.2
64	Chazima Terence Shaka	1528	KEN	+96N	−22B	+73N	F	−2B	−27N	+86B	−30N	3.0	30.0	31.0	6.00	1036	-23.2
65	Kiplangat Baraka	1473	KEN	+78N	−13B	+89B	F	−32N	−22B	+60N	−18N	3.0	28.0	29.5	8.00	1526	+9.2
66	Waweru Trevor Kipngetich	1504	KEN	+94N	−40B	+54N	−12B	=78N	−38B	=57N	−56B	3.0	28.0	29.0	8.25	1031	-15.2
67	KitongaMirriam	1427	KEN	−57B	+92N	+82B	−34N	−30B	=61N	=37B	−71N	3.0	27.0	29.0	8.50	894	-24.8
68	Getange Johnpaul	1687	KEN	−11N	+81B	−17N	+52B	+56N	−20B	F	F	3.0	26.0	26.0	10.50	1606	-8.6
69	Osundwa Ihabi	1494	KEN	−79B	+84N	F	−28B	−39N	+74N	−46B	+89N	3.0	25.0	27.0	7.50	933	-24.8
70	Gilana Angel Muthoni	1458	KEN	+89N	−28B	−78N	F	−9B	−37N	+92B	+86N	3.0	24.0	25.0	6.00	980	-11.2
71	Gichuga Wanjiru Wanjiku	1571	KEN	−27N	+98B	−40N	−60B	−55N	F	+61B	+67B	3.0	24.0	24.0	6.50	1487	-0.8
72	Miriti Angela Kendi	0	KEN	=90N	+77B	−25N	−62B	+83N	−58B	−53N	=85B	3.0	23.0	25.0	7.25	1367	0.0
73	FIDE 10845933	0	—	−63N	+95B	−64B	−82N	−89B	+91N	+?B	−44N	3.0	17.5	17.5	3.00	1317	0.0
74	Brian Ayodi Chinda	0	KEN	−49N	+?B	−58N	−80B	+?N	−69B	+98N	−52B	3.0	17.0	17.0	0.00	1284	0.0
75	FIDE 10850643	0	—	−44B	−61N	+99B	−88N	−51B	−?N	+?N	+98B	3.0	13.5	13.5	0.00	711	0.0
76	Clement Onyango	0	KEN	F	F	F	+?N	+91B	−88N	+90B	−49B	3.0	10.0	10.0	4.00	1343	0.0
77	Chepkoiwo Blessing Jerutich	0	KEN	=47B	−72N	−35B	F	+57N	−33B	+80N	−36N	2.5	27.0	27.0	8.50	1254	0.0
78	Isaac Bahati	0	KEN	−65B	+99N	+70B	−29N	=66B	−26N	−36B	−61N	2.5	27.0	27.0	4.50	1354	0.0
79	Hillary Mukabwa	0	KEN	+69N	−51N	−36B	F	−47B	−45N	=81B	+84N	2.5	24.5	27.0	6.75	1269	0.0
80	John Okello Oluoch	0	KEN	−81B	−54B	+96N	+74N	=36B	−29N	−77B	−83N	2.5	24.0	25.0	6.25	1220	0.0
81	Salma Nkatha Mwenda	1412	KEN	+80N	−68N	−34B	+95B	−60N	−52B	=79N	−57B	2.5	24.0	25.0	4.75	892	0.0
82	FIDE 10865969	0	—	−43N	+96B	−67N	+73B	−62N	−53B	−87N	=?B	2.5	20.0	20.0	4.00	1132	0.0
83	Njuguna Lisa Wanjiru	1410	KEN	=84B	−47N	+100B	−46N	−72B	−48N	F	+80B	2.5	20.0	20.0	3.75	1431	+2.8
84	Oscar Jesus	0	KEN	=83N	−69B	=90N	−54B	=?N	−57B	+96N	−79B	2.5	19.0	19.0	3.25	1313	0.0
85	FIDE 554010560	0	—	−86B	−55N	+?B	F	+95N	−46N	−89B	=72N	2.5	18.5	18.5	2.50	846	0.0
86	Remiel Ahadi	0	KEN	+85N	+90B	−10N	−49B	F	−13B	−64N	−70B	2.0	26.0	27.0	4.50	1330	0.0
87	FIDE 554010578	0	—	+99N	F	−14B	−26N	−35B	−51N	+82B	−48B	2.0	25.0	25.0	2.50	912	0.0
88	Maiyani Oloitiptip Trevor	1473	KEN	−37B	−94N	F	+75B	−41N	+76B	−42N	−54B	2.0	24.5	25.5	6.00	938	-15.2
89	Kamoni Elsie Wambui	0	KEN	−70B	F	−65N	−56B	+73N	−43B	+85N	−69B	2.0	22.5	22.5	5.50	671	0.0
90	Kayden Sankau Oloitiptip	1414	KEN	=72B	−86N	=84B	F	−24N	−55B	−76N	+91B	2.0	21.5	22.5	4.75	912	-6.0
91	FIDE 554010632	0	—	−59B	−56N	F	+96B	−76N	−73B	+95N	−90N	2.0	18.5	19.5	2.00	626	0.0
92	FIDE 10843582	0	—	−53B	−67B	−95N	F	−52N	+96B	−70N	+99B	2.0	16.0	16.0	1.00	684	0.0
93	Methu, Joseph Muragu	1966	KEN	+13N	−27B	=28N	F	F	F	F	F	1.5	18.5	18.5	8.00	1768	-15.4
94	Jeremy Nganga	0	KEN	−66B	+88B	−44N	F	F	F	F	F	1.0	17.0	17.0	2.00	1367	0.0
95	FIDE 554010705	0	—	−50B	−73N	+92B	−81N	−85B	−?N	−91B	−?N	1.0	16.0	16.0	2.00	616	0.0
96	FIDE 554010586	0	—	−64B	−82N	−80B	−91N	+?B	−92N	−84B	F	1.0	14.5	14.5	0.00	729	0.0
97	FIDE 554010608	0	—	+?N	−48B	−49N	F	F	F	F	F	1.0	10.0	10.0	0.00	765	0.0
98	FIDE 554010659	0	—	F	−71N	−59B	F	F	−50N	−74B	−75N	0.0	20.0	20.0	0.00	642	0.0
99	FIDE 554010713	0	—	−87B	−78B	−75N	−?B	F	F	−56N	−92N	0.0	14.5	14.5	0.00	700	0.0
100	Palanga Boston	1728	KEN	−10N	−45B	−83N	F	F	F	F	F	0.0	12.5	12.5	0.00	803	-76.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Mathenge GichugaKEN
+47.6
5.0 pts · #45
2Deng Khor Kuol, MichaelSSD
+33.4
6.0 pts · #5
3Cheruiyot EllyKEN
+32.4
5.0 pts · #14

Top rating losers

1Palanga BostonKEN
-76.8
0.0 pts · #75
2Gwada, JamesKEN
-62.8
3.5 pts · #41
3Nashipae BellaWCMKEN
-42.8
5.0 pts · #35

Biggest upsets

R5+410 Elo gap
Kyalo Cynthia Wayua1440 beat Kelly Mwaniki1850
R3+318 Elo gap
Njuguna Lisa Wanjiru1410 beat Palanga Boston1728
R8+276 Elo gap
WFMNdirangu, Joyce Nyaruai1828 beat FMPeter Majur Manyang2104