Open Interne Roi Blanc Montbeliard 2025-2026
18 players participated in this 7-round tournament, held on 18 Jun 2026 in Montbeliard, France. Top 10 Elo average was 1658, and top seed was Cedric Dusart (🇫🇷 FRA, 1816).
Cedric Dusart (🇫🇷 FRA, 1816) won with 7.0/7, ahead of Mathis Guihot (6.0) and Joani May (5.0). Dusart won solo starting round 5.
The biggest upset came in round 6: Herve Boilloux (1420) beat Benjamin Didion (1552), a +132-point gap.
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How it unfolded
Top 6 · 7 roundsCedric Dusart led from R5; +1.0-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Cedric Dusart never relinquished the lead after R5; final gap +1.0 over the runner-up.
Cedric Dusart beat Mathis Guihot (White).
Cedric Dusart 7 wins (R1–R7)Mathis Guihot 4 wins (R1–R4)Joani May 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Cedric Dusart | * | 1 | 1 | 1 |
| 2Mathis Guihot | 0 | * | 1 | — |
| 3Joani May | 0 | 0 | * | 1 |
| 4Philippe Perrin | 0 | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Dusart, Cedric | 1816 | FRA | +15B | +4N | +7B | +10N | +2B | +3N | +5B | 7.0 | 25.5 | 27.5 | 27.50 | 2474 | +42.8 |
| 2 | Guihot, Mathis | 1761 | FRA | +8B | +10N | +4B | +3N | −1N | +11B | +6N | 6.0 | 26.0 | 29.0 | 22.00 | 1966 | +19.6 |
| 3 | May, Joani | 1782 | FRA | +9N | +11B | +5N | −2B | +7N | −1B | +10N | 5.0 | 27.0 | 30.0 | 17.00 | 1838 | +6.8 |
| 4 | Genet, Xavier | 1610 | FRA | +13N | −1B | −2N | −6B | +18N | +12B | +8B | 4.0 | 25.0 | 25.5 | 9.00 | 1579 | -10.0 |
| 5 | Perrin, Philippe | 1604 | FRA | +16B | +15N | −3B | =7N | +11N | =6B | −1N | 4.0 | 24.0 | 26.0 | 10.50 | 1692 | +12.0 |
| 6 | Robbe, Anthyme | 1502 | FRA | −11N | +9B | −10B | +4N | +15B | =5N | −2B | 3.5 | 23.5 | 25.5 | 11.50 | 1639 | +34.0 |
| 7 | Thouvenin, Eric | 1675 | FRA | +17N | +18B | −1N | =5B | −3B | −8N | +16B | 3.5 | 23.5 | 24.0 | 6.50 | 1566 | -14.8 |
| 8 | Cabaret, Raphael | 1543 | FRA | −2N | +13B | +18N | −11B | =12N | +7B | −4N | 3.5 | 21.5 | 22.0 | 7.75 | 1517 | -1.2 |
| 9 | Dano, Silas | 1545 | FRA | −3B | −6N | +12B | +16N | −10B | =14N | +11N | 3.5 | 19.5 | 21.5 | 8.75 | 1594 | +3.2 |
| 10 | Moreau, Patrice | 1577 | FRA | +12N | −2B | +6N | −1B | +9N | F | −3B | 3.0 | 27.5 | 30.0 | 9.50 | 1692 | +17.2 |
| 11 | Amatucci, Bruno | 1654 | FRA | +6B | −3N | +16B | +8N | −5B | −2N | −9B | 3.0 | 25.5 | 27.5 | 9.00 | 1572 | -17.2 |
| 12 | Betsch, Thomas | 0 | FRA | −10B | +14B | −9N | +17N | =8B | −4N | F | 2.5 | 19.0 | 21.0 | 6.25 | 1417 | -30.8 |
| 13 | Bourezzou, Sofiane | 1439 | FRA | −4B | −8N | =15B | +14N | +17B | F | F | 2.5 | 17.5 | 19.5 | 5.50 | 1470 | 0.0 |
| 14 | Mesnier Reina, Lucas | 0 | FRA | F | −12N | −17B | −13B | +16N | =9B | +18N | 2.5 | 13.0 | 13.0 | 4.25 | 1425 | 0.0 |
| 15 | Didion, Benjamin | 1552 | FRA | −1N | −5B | =13N | +18B | −6N | −16B | =17N | 2.0 | 21.0 | 21.5 | 2.75 | 1222 | -71.6 |
| 16 | Boilloux, Herve | 1420 | FRA | −5N | +17B | −11N | −9B | −14B | +15N | −7N | 2.0 | 18.5 | 20.5 | 4.00 | 1473 | +7.4 |
| 17 | Longro, Valentin | 1528 | FRA | −7B | −16N | +14N | −12B | −13N | =18B | =15B | 2.0 | 15.0 | 15.5 | 3.75 | 1218 | -54.4 |
| 18 | Garnier, Jacques | 0 | FRA | F | −7N | −8B | −15N | −4B | =17N | −14B | 0.5 | 17.5 | 17.5 | 1.00 | 1210 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Dusart, CedricFRA+42.87.0 pts · #1
- 2Robbe, AnthymeFRA+34.03.5 pts · #5
- 3Guihot, MathisFRA+19.66.0 pts · #2
- 1Didion, BenjaminFRA-71.62.0 pts · #18
- 2Longro, ValentinFRA-54.42.0 pts · #16
- 3Betsch, ThomasFRA-30.82.5 pts · #12
- R6+132 Elo gap
- R6+132 Elo gap
- R7+109 Elo gap