CChessStats

Jumuia Ya Afrika Mashariki End Year Open Chess Festival 2025 - U1800

Open SwissStandard

21 players participated in this 6-round tournament, held from 17 Dec 2025 to 18 Dec 2025 in Nairobi, Kenya. Top 10 Elo average was 1731, and top seed was Harmony Odhiambo (🇰🇪 KEN, 1789).

Muchoki Trevor Kanyuithia (🇰🇪 KEN, 1600) won with 6.0/6, ahead of Apamo Shem Mali (4.5) and Wanyonyi Joshua (4.5). Kanyuithia won solo starting round 5.

The biggest upset came in round 3: Osundwa Ihabi (1469) beat Harmony Odhiambo (1789), a +320-point gap.

Location
🇰🇪Nairobi, Kenya
Dates
17 Dec 2025 → 18 Dec 2025
Time control
Standard: 90 minutes for the whole game
System
Swiss · 6 rounds
Top seed
🇰🇪Harmony Odhiambo1789
Avg top 10
1,731
Participants
21
Federations · 1 represented
🇰🇪Kenya×20
Top 3

How it unfolded

Top 6 · 6 rounds

Muchoki Trevor Kanyuithia led from R5; +1.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders
8
4
3
2
1
1
1.534.56R1R2R3R4R5R6
Kanyuithia6Mali4.5Joshua4.5Kinoti4Njarumi3.5Nyakundi3.5
R5–R6 · LEAD HELD

Muchoki Trevor Kanyuithia never relinquished the lead after R5; final gap +1.5 over the runner-up.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Muchoki Trevor Kanyuithia beat Apamo Shem Mali (Black).

WIN STREAKS · 3 top finishers

Muchoki Trevor Kanyuithia 6 wins (R1–R6)Apamo Shem Mali 4 wins (R1–R4)Wanyonyi Joshua 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Muchoki Trevor Kanyuithia*
1
—
1
2Apamo Shem Mali
0
*—
1
3Wanyonyi Joshua——*—
4Kenneth Koome Kinoti
0
0
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Muchoki Trevor Kanyuithia1600KEN+15N+12B+5N+7B+2N+4B6.018.020.020.002507+146.3
2Apamo Shem Mali1609KEN+4N+7N+11B+6N−1B=5B4.520.523.515.751872+82.4
3Wanyonyi Joshua1698KEN−6B+21N=17B+13N+11B+19N4.511.511.57.251785+24.0
4Kenneth Koome Kinoti1741KEN−2B+20N+13B+10N+6B−1N4.019.520.510.001722-2.8
5Wayne Joe Njarumi1702KEN+10NF−1B+11N+9B=2N3.520.020.011.751811+23.8
6Osundwa Ihabi1469KEN+3N+19B+18N−2B−4N=7B3.518.019.08.751770+71.0
7Nyakundi, Zadock1788KEN+20N−2B+19N−1N+10B=6N3.518.019.06.751652-19.4
8Omondi, Morrel1678KEN−16N−10B+14N+15B=12N+13B3.512.514.58.251681+1.4
9Mitei, Cosmas1740KEN=14N−18B+16N+17B−5N+12B3.512.013.57.251706-4.2
10Kagambi, Angel1576KEN−5B+8N+12N−4B−7N+16B3.017.019.08.001678+30.0
11Mikuli Lewis Owino1776KEN+17N+16B−2N−5B−3N+15B3.016.518.05.501641-42.0
12Riungu Kevin1674KEN+21B−1N−10B+14N=8B−9N2.518.518.54.251494-24.4
13Claude Peter1660KEN=18N+14B−4N−3B+17N−8N2.516.017.54.751635-5.0
14Patnaik, Sarthak1607KEN=9B−13N−8B−12B+20N+17B2.513.514.54.251616-0.8
15Kagambi, Samuel1727KEN−1B−17N+20B−8N+21B−11N2.015.015.01.001428-76.4
16Otieno Ronny1469KEN+8B−11N−9B+21N−19B−10N2.014.014.03.501445-4.4
17Maashao, Genevieve1615KEN−11B+15B=3N−9N−13B−14N1.516.018.04.251510-35.2
18Odhiambo, Harmony1789KEN=13B+9N−6BFFF1.510.510.54.751623-12.2
19Ombiro Clifford1649KENF−6N−7BF+16N−3B1.015.015.02.001416-24.0
20Muchina Gabriel Mathigu1657KEN−7B−4B−15NF−14B+21N1.012.012.00.00918-66.4
21FIDE 108983950—−12N−3BF−16B−15N−20B0.012.012.00.008480.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets