40th Tamil Nadu IM Norm Closed Circuit Chess Tournament - Coimbatore
10 players participated in this 9-round tournament, held from 16 Dec 2025 to 22 Dec 2025 in Coimbatore, India. 8 titled players from 5 federations. Top 10 Elo average was 2252, and top seed was Nithin Babu (🇮🇳 IND, 2326).
Diasmany Otero Acosta (🇨🇺 CUB, IM, 2317) won with 7.0/9, ahead of Carlomagno Oblitas (6.0) and Balasubramaniam H (6.0). Otero Acosta won solo starting round 8.
The biggest upset came in round 8: Raul Claverie (IM, 2164) beat Siddhanth Poonja (2315), a +151-point gap.
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How it unfolded
Top 10 · 9 roundsIM Diasmany Otero Acosta led from R6 onwards, the runner-up race stayed tight. Title race converged from 2 co-leaders at R4 to 1 by R6.
IM Diasmany Otero Acosta takes the sole lead (5.0/6).
IM Diasmany Otero Acosta beat FM Balasubramaniam H (White).
IM Diasmany Otero Acosta 3 wins (R2–R4)FM Balasubramaniam H 3 wins (R7–R9)
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇨🇺IMOtero Acosta, Diasmany | 2317 | * | ½ | 1 | 1 | ½ | 1 | ½ | ½ | 1 | 1 | 7.0 | 28.75 | 38.0 | +16.3 | 2465 |
| 3 | 🇵🇪IMOblitas, Carlomagno | 2272 | ½ | * | ½ | ½ | ½ | 1 | ½ | 1 | 1 | ½ | 6.0 | 24.00 | 39.0 | +12.4 | 2375 |
| 2 | 🇮🇳FMBalasubramaniam H | 2221 | 0 | ½ | * | 1 | 1 | 0 | ½ | 1 | 1 | 1 | 6.0 | 22.25 | 39.0 | +38.6 | 2381 |
| 4 | 🇮🇳Nithin Babu | 2326 | 0 | ½ | 0 | * | 1 | 1 | 1 | ½ | 1 | ½ | 5.5 | 21.50 | 39.5 | +0.4 | 2324 |
| 5 | 🇨🇺IMGomez Sanchez, Jorge Marcos | 2282 | ½ | ½ | 0 | 0 | * | ½ | 1 | 1 | 1 | 1 | 5.5 | 19.25 | 39.5 | +6.1 | 2329 |
| 7 | 🇦🇷IMClaverie, Raul | 2164 | 0 | 0 | 1 | 0 | ½ | * | 1 | ½ | ½ | 1 | 4.5 | 17.00 | 40.5 | +11.8 | 2262 |
| 6 | 🇮🇳Siddhanth Poonja | 2315 | ½ | ½ | ½ | 0 | 0 | 0 | * | 1 | 1 | 1 | 4.5 | 15.50 | 40.5 | -17.2 | 2246 |
| 8 | 🇨🇴IMPalencia Morales, Wilson Guillermo | 2185 | ½ | 0 | 0 | ½ | 0 | ½ | 0 | * | ½ | ½ | 2.5 | 10.25 | 42.5 | -21.4 | 2094 |
| 9 | 🇮🇳CMVelavaa Ragavesh | 2159 | 0 | 0 | 0 | 0 | 0 | ½ | 0 | ½ | * | 1 | 2.0 | 5.00 | 43.0 | -47.5 | 2043 |
| 10 | 🇮🇳FMJai Sankar Subramanian | 2283 | 0 | ½ | 0 | ½ | 0 | 0 | 0 | ½ | 0 | * | 1.5 | 7.00 | 43.5 | -68.6 | 1976 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Balasubramaniam HFMIND+38.66.0 pts · #2
- 2Otero Acosta, DiasmanyIMCUB+16.37.0 pts · #1
- 3Oblitas, CarlomagnoIMPER+12.46.0 pts · #3
- 1Jai Sankar SubramanianFMIND-68.61.5 pts · #10
- 2Velavaa RagaveshCMIND-47.52.0 pts · #9
- 3Palencia Morales, Wilson GuillermoIMCOL-21.42.5 pts · #8
- R8+151 Elo gap
- R6+124 Elo gap
- R9+119 Elo gap