CChessStats

2nd Pioneri Chess Challengers Programme Invitational Tournament

Open SwissStandard

6 players participated in this 6-round tournament, held from 26 Jul 2025 to 27 Jul 2025 in Embu, Kenya. Top 10 Elo average was 1090, and top seed was Kamau Kelvin Ngigi (🇰🇪 KEN, 1735).

Nthiga Blair Wema (🇰🇪 KEN, 1522) won with 5.5/6, ahead of Okemwa Eugene (4.5) and Kamau Kelvin Ngigi (3.0). Wema won solo starting round 2.

The biggest upset came in round 2: Nthiga Blair Wema (1522) beat Kamau Kelvin Ngigi (1735), a +213-point gap.

Location
🇰🇪Embu, Kenya
Dates
26 Jul 2025 → 27 Jul 2025
Time control
Standard: 90 minutes for the whole game
System
o · 6 rounds
Top seed
🇰🇪Kamau Kelvin Ngigi1735
Avg top 10
1,090
Participants
6
Federations · 1 represented
🇰🇪Kenya×5
Top 3

How it unfolded

Top 6 · 6 rounds

Nthiga Blair Wema led from R2; +1.0-point edge over the runner-up.

Co-leaders
3
1
1
1
1
1
1.534.56R1R2R3R4R5R6
Wema5.5Eugene4.5Ngigi3Karimi2Ahadi1.51.5
R2–R6 · LEAD HELD

Nthiga Blair Wema never relinquished the lead after R2; final gap +1.0 over the runner-up.

HEAD-TO-HEAD · WINNER VS 2ND · 2 games

Nthiga Blair Wema 1.5–0.5 against Okemwa Eugene (R1 1-0, R6 ½-½) — decisive in 1/2.

WIN STREAKS · 2 top finishers

Nthiga Blair Wema 5 wins (R1–R5)Okemwa Eugene 4 wins (R2–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Nthiga Blair Wema*
1
½
1
1
—
2Okemwa Eugene
0
½
*—
1
1
3Kamau Kelvin Ngigi
0
0
—*
1
0
4Newton Karimi—
0
0
0
1
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Nthiga Blair Wema1522KEN+2N+3B+3N+5B+5N=2B5.516.518.015.752042+97.6
2Okemwa Eugene1676KEN−1B+6N+6B+4N+4B=1N4.516.518.09.751660-2.0
3Kamau Kelvin Ngigi1735KEN+4B−1N−1B+6N+6B−4N3.016.518.05.001372-38.0
4Newton Karimi1605KEN−3N−5B+5N−2B−2N+3B2.016.518.04.501513-17.6
5Remiel Ahadi0KEN−6B+4N−4B−1N−1B=6N1.516.518.02.7513720.0
6FIDE 5540001570—+5N−2B−2N−3B−3N=5B1.516.518.02.259060.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets