CChessStats

Championnat de Monaco 2026

Open SwissStandard

26 players participated in this 7-round tournament, held from 23 Feb 2026 to 01 Mar 2026 in Monaco, Monaco. 13 titled players from 2 federations. Top 10 Elo average was 2133, and top seed was Amir Bagheri (🇲🇨 MNC, GM, 2359).

Riccardo Costalonga (🇲🇨 MNC, 2160) won with 5.0/7, ahead of Amir Bagheri (5.0) and Igor Efimov (5.0). Costalonga won on tie-break after catching the field in the final round.

The biggest upset came in round 2: Christina Lopneva (1598) beat Kenia Jose de Ribbegren (WCM, 1858), a +260-point gap.

Location
🇲🇨Monaco, Monaco
Dates
23 Feb 2026 → 01 Mar 2026
Time control
Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1
System
Swiss · 7 rounds
Top seed
🇲🇨GMAmir Bagheri2359
Avg top 10
2,133
Participants
26
Titled players · 13
GM×2
IM×1
FM×3
WGM×1
WIM×3
WCM×3
Federations · 2 represented
🇲🇨Monaco×24
🇫🇷France×2
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 5 players tied at 5.0/7, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 5 at the finish.

Co-leaders
11
5
1
3
3
5
5
23.55.57R1R2R3R4R5R6R7
Costalonga5Cahen5Verdier5Efimov5Bagheri5Dornbusch4.5
R7 · TIEBREAK CLUSTER

5 players finish on 5.0/7. Costalonga takes the title on Buchholz Cut1 (27.5).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Riccardo Costalonga beat FM Alexis Cahen (Black).

R3–R7 · UNBEATEN

Riccardo Costalonga went unbeaten across 5 games (R3–R7).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Riccardo Costalonga*
1
0
—
2FMAlexis Cahen
0
*
1
½
3FMPatrice Verdier
1
0
*
½
4GMIgor Efimov—
½
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Costalonga, Riccardo2160MNC+10B−5N+15B+9N=6B+4N=2B5.027.531.021.252179+15.2
2Bagheri, AmirGM2359MNC+16N+13B+8B=6N=4B=3N=1N5.027.531.021.252274-5.1
3Efimov, IgorGM2321MNC+18B+9N=4B+12N=7B=2B=5N5.027.030.020.252211-6.1
4Cahen, AlexisFM2055MNC+25N+14B=3N+5B=2N−1B+13N5.027.027.517.502221+31.2
5Verdier, PatriceFM1924MNC+26N+1B=6B−4N+12B+9N=3B5.027.027.017.252211+53.4
6Dornbusch, TatianaWGM2192MNC+23N+7B=5N=2B=1N+13B−8B4.527.528.516.502162-2.8
7Zvereva, MarijaWIM1994MNC+19B−6N+10B+11B=3N−8N+12B4.525.528.517.002114+24.2
8Levacic, DamirIM2077MNC+15BF−2N=13B+17N+7B+6N4.524.024.017.252199+10.6
9Berthaut, Alexandre2012MNC+21N−3B+14N−1B+19N−5B+17N4.024.527.012.001949-7.0
10Berezovska , SvetlanaWCM1848MNC−1N+21B−7N+14B−16N+20B+18B4.022.024.511.501902+11.4
11Berezovsky, FiorinaWCM1942MNC=20N+17B−12B−7N+21N+15B=14N4.020.523.012.001856-11.4
12Ribbegren, Karl Johan2108MNC=17N+20B+11N−3B−5N+16B−7N3.525.027.511.501925-29.6
13Van Hoolandt, PatrickFM2049MNC+22B−2N+19B=8N+18B−6N−4B3.525.027.510.751978-9.6
14Benlolo, Alain1933MNC+24B−4N−9B−10N+23B+19N=11B3.521.022.07.001835-14.6
15Rapaire, Jean-Michel1721MNC−8N+26B−1N=21B+20N−11N+22B3.521.021.06.251764+4.8
16Maiffret, Patrick1864MNC−2B=22N+25B−18N+10B−12N+21B3.520.521.08.251864-2.0
17Lebel-Arias, JuliaWIM1723MNC=12B−11N+22B+23N−8B=18N−9B3.021.522.56.751880+24.4
18Dubois, MartineWIM1862MNC−3N=25B+20N+16B−13N=17B−10N3.021.522.07.751801-13.0
19Lopneva, Christina1598FRA−7N+23B−13N+25N−9B−14B+24N3.017.518.02.501800+56.8
20Karpov , Hryhorii1521MNC=11B−12N−18B+22N−15B−10N+25N2.520.521.05.001701+49.2
21Nasibullin, Emil1623MNC−9B−10N+26B=15N−11B+23N−16N2.520.020.02.751706+20.8
22Rosette, Stanislav1649FRA−13N=16B−17N−20B+24N+25B−15N2.517.017.53.251619-18.0
23Jose de Ribbegren, KeniaWCM1858MNC−6B−19N+24N−17B−14N−21BF1.017.517.51.001484-54.6
24Lherbon De Lussats, Jean1489MNC−14NF−23B+26N−22BF−19B1.010.010.00.001438-7.2
25Savich , Svetlana1692MNC−4B=18N−16N−19BF−22N−20B0.519.519.51.501358-82.4
26Ribbegren, Kimberly1412MNC−5B−15N−21N−24BFFF0.012.512.50.00858-34.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets