67th Nairobi Chess Club Championship - U1800
19 players participated in this 4-round tournament, held from 12 Jul 2025 to 13 Jul 2025 in Nairobi, Kenya. 1 titled players from 2 federations. Top 10 Elo average was 1725, and top seed was Nduati Christopher (🇰🇪 KEN, 1795).
Omondi Stanley (🇰🇪 KEN, 1731) won with 3.5/4, ahead of Jackim Arigi (3.5) and Kenneth Koome Kinoti (3.0). Stanley won on tie-break after catching the field in the final round.
The biggest upset came in round 2: Onyango Shirlyn Gathoni (1615) beat Muli Faraja Mumo (1778), a +163-point gap.
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How it unfolded
Top 6 · 4 roundsTight race until R4; 2 players tied at 3.5/4, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
2 players finish on 3.5/4. Stanley takes the title on Buchholz Cut1 (7.0).
Jackim Arigi won 3 in a row (R2–R4).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jackim Arigi | * | — | — | — |
| 2Omondi Stanley | — | * | — | 1 |
| 3Amos Ochieng | — | — | * | — |
| 4Kenneth Koome Kinoti | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Omondi Stanley | 1731 | KEN | +15B | +12N | =6B | +3B | 3.5 | 7.0 | 7.0 | 5.75 | 1992 | +21.8 |
| 2 | Arigi, Jackim | 1613 | KEN | =8B | +14N | +13B | +6N | 3.5 | 5.5 | 6.0 | 5.00 | 2047 | +40.6 |
| 3 | Kenneth Koome Kinoti | 1693 | KEN | +19B | +10N | +9B | −1N | 3.0 | 7.5 | 7.5 | 4.00 | 1779 | +13.6 |
| 4 | Amos Ochieng | 1738 | KEN | +11B | −6N | +8B | +9N | 3.0 | 6.5 | 8.5 | 6.00 | 1853 | +11.4 |
| 5 | Gianni Tuli | 1670 | KEN | F | +15N | +11B | +10B | 3.0 | 4.0 | 4.0 | 4.00 | 2417 | +34.0 |
| 6 | Dominic, Carlos Kiema | 1659 | KEN | +17B | +4B | =1N | −2B | 2.5 | 10.0 | 10.0 | 4.75 | 1810 | +16.2 |
| 7 | Aviah Mutua | 1607 | KEN | −13B | +16N | +12B | =8N | 2.5 | 4.5 | 4.5 | 2.50 | 1786 | +38.0 |
| 8 | Ngila, Samuel Dennis Kivindyo | 1734 | KEN | =2N | +17B | −4N | =7B | 2.0 | 9.0 | 9.0 | 3.00 | 1684 | -5.2 |
| 9 | Ombiro Clifford | 1626 | KEN | +14B | +13N | −3N | −4B | 2.0 | 7.0 | 7.5 | 1.50 | 1721 | +10.2 |
| 10 | Shamte Hussein | 0 | KEN | +16B | −3B | +15N | −5N | 2.0 | 6.0 | 6.0 | 0.00 | 1662 | 0.0 |
| 11 | Onyango Shirlyn Gathoni | 1615 | KEN | −4N | +18B | −5N | +15B | 2.0 | 6.0 | 6.0 | 0.00 | 1700 | +17.2 |
| 12 | Nashipae BellaWCM | 1644 | KEN | +18N | −1B | −7N | =14B | 1.5 | 6.5 | 6.5 | 0.25 | 1631 | -7.2 |
| 13 | Riungu Kevin | 1697 | KEN | +7N | −9B | −2N | F | 1.0 | 8.0 | 8.0 | 2.50 | 1490 | -16.8 |
| 14 | Pero Derick Elvis | 1754 | UGA | −9N | −2B | F | =12N | 0.5 | 7.0 | 7.0 | 0.75 | 1360 | -29.8 |
| 15 | Arianne Hera Ngani | 1611 | KEN | −1N | −5B | −10B | −11N | 0.0 | 8.5 | 10.5 | 0.00 | 874 | -50.0 |
| 16 | Ngesa Francis | 1674 | KEN | −10N | −7B | F | F | 0.0 | 5.5 | 5.5 | 0.00 | 807 | -11.8 |
| 17 | Steve Patience | 1779 | KEN | −6N | −8N | F | F | 0.0 | 5.0 | 5.0 | 0.00 | 897 | -48.8 |
| 18 | Muli Faraja Mumo | 1778 | KEN | −12B | −11N | F | F | 0.0 | 3.5 | 3.5 | 0.00 | 840 | -54.8 |
| 19 | Oluchiri Jeshurun Inyangala | 1607 | KEN | −3N | F | F | F | 0.0 | 3.0 | 3.0 | 0.00 | 893 | -15.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Arigi, JackimKEN+40.63.5 pts · #1
- 2Aviah MutuaKEN+38.02.5 pts · #5
- 3Gianni TuliKEN+34.03.0 pts · #10
- 1Muli Faraja MumoKEN-54.80.0 pts · #17
- 2Arianne Hera NganiKEN-50.00.0 pts · #19
- 3Steve PatienceKEN-48.80.0 pts · #15
- R2+163 Elo gap
- R2+141 Elo gap
- R1+134 Elo gap