Calvin Nicholas Jacobs
RSA · FIDE ID 14333279 · 39 tournament games since 2021
Standard
2156
#22 in RSA (active)
Rapid
–
Unrated
Blitz
1961
#49 in RSA (active)
Score
55%
17 W · 9 D · 13 L
Opp. avg
1992
Last 39 games
Last game
2025-07-05
South African Open 2025 | Championship Section
Prep summary
- As White: 1.e4 in 81% of games (scores 53%).
- Against 1.e4: 1...c5 in 12 of 12 games (Sicilian Defense), scoring 42%.
- Against 1.d4: 1...f5 in 4 of 5 games (Dutch Defense), scoring 75%.
- Comfort zone: Dutch Defense: Leningrad Variation, Warsaw Variation as Black, 67% in 3 games.
- By opponent strength: 50% against higher-rated players, 69% against lower-rated.
Based on 39 over-the-board games (13 classical). 21 with White (57%), 18 with Black (53%).
Openings as White
First move
| 1.e4 | 17 | 53% |
| 1.b3 | 4 | 75% |
Most played
| Opening | Games | Score |
|---|---|---|
| Caro-Kann Defense: Maróczy Variation | 2 | 75% |
| Sicilian Defense: Alapin Variation, Smith-Morra Declined | 2 | 25% |
| Sicilian Defense: Smith-Morra Gambit Accepted | 2 | 50% |
| French Defense: Two Knights Variation | 2 | 75% |
| Nimzo-Larsen Attack: Modern Variation | 2 | 100% |
Openings as Black
Against 1.e4 (12 games)
| 1...c5 Sicilian Defense | 12 | 42% |
Against 1.d4 (5 games)
| 1...f5 Dutch Defense | 4 | 75% |
| 1...d5 Queen's Pawn Game | 1 | 100% |
Most played
| Opening | Games | Score |
|---|---|---|
| Dutch Defense: Leningrad Variation, Warsaw Variation | 3 | 67% |
| Sicilian Defense: Four Knights Variation, Cobra Variation | 2 | 50% |
| Sicilian Defense: Closed | 2 | 25% |
| Dutch Defense | 1 | 100% |
| Sicilian Defense: Four Knights Variation | 1 | 0% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2025-07-05 | Benjamin Vincent Hercules (2084) South African Open 2025 | Championship Section · classical | ½ |
| 2025-07-04 | Michael Simpson (2204) South African Open 2025 | Championship Section · classical | L |
| 2025-07-04 | Dante M Beukes (2246) South African Open 2025 | Championship Section · classical | ½ |
| 2025-07-03 | Neathan Peter (2075) South African Open 2025 | Championship Section · classical | W |
| 2025-07-02 | Jack Van Zyl-Rudd (2228) South African Open 2025 | Championship Section · classical | W |
| 2025-07-01 | Reegan Palmer (2057) South African Open 2025 | Championship Section · classical | ½ |
| 2025-06-30 | Raphael Felix (2227) South African Open 2025 | Championship Section · classical | W |
| 2025-06-29 | Sello Mahlangu (2015) South African Open 2025 | Championship Section · classical | L |
| 2025-06-28 | Devon Smit (1915) South African Open 2025 | Championship Section · classical | W |
| 2025-06-28 | Providence Oatlhotse (2241) South African Open 2025 | Championship Section · classical | L |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.