National championship B10
Open SwissStandard
35 players participated in this 9-round tournament, held from 01 Jun 2025 to 07 Jun 2025 in Primorsko, Bulgaria. Top 10 Elo average was 1655, and top seed was Velislav Zahariev (🇧🇬 BUL, 1862).
Velislav Zahariev (🇧🇬 BUL, 1862) won with 7.5/9, ahead of Atanas Taskov (6.5) and Lyubomir Koralov (6.5). Zahariev took the lead from round 7.
The biggest upset came in round 2: Denislav Ivanov (1596) beat Velislav Zahariev (1862), a +266-point gap.
Location
🇧🇬Primorsko, Bulgaria
Dates
01 Jun 2025 → 07 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Federations · 1 represented
🇧🇬Bulgaria×29
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsVelislav Zahariev led from R7; +1.0-point edge over the runner-up.
Co-leaders
16
6
2
1
1
1
1
1
1
R5 · LEADER CHANGE04 Jun
Atanas Taskov takes the sole lead (4.5/5).
R7 · HEAD-TO-HEAD · WINNER VS 2ND
Velislav Zahariev beat Atanas Taskov (White).
WIN STREAKS · 3 top finishers
Velislav Zahariev 6 wins (R3–R8)Atanas Taskov 3 wins (R4–R6)Lyubomir Koralov 6 wins (R3–R8)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Velislav Zahariev | * | 1 | ½ | 0 |
| 2Atanas Taskov | 0 | * | 0 | ½ |
| 3Lyubomir Koralov | ½ | 1 | * | 1 |
| 4Denislav Ivanov | 1 | ½ | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Zahariev, Velislav | 1862 | BUL | +21N | −4B | +23N | +22B | +5N | +7B | +2B | +12N | =3N | 7.5 | 44.0 | 48.0 | 38.75 | 1815 | -11.6 |
| 2 | Taskov, Atanas | 1652 | BUL | +23N | +16B | =4N | +8B | +6N | +10B | −1N | −3B | +5N | 6.5 | 48.0 | 52.0 | 35.00 | 1783 | +55.2 |
| 3 | Koralov, Lyubomir | 1655 | BUL | −20B | −13N | +30B | +29N | +27B | +19N | +4B | +2N | =1B | 6.5 | 39.5 | 42.5 | 29.75 | 1982 | +55.6 |
| 4 | Ivanov, Denislav | 1596 | BUL | +34B | +1N | =2B | +9N | =7N | +6B | −3N | −5B | +14N | 6.0 | 49.5 | 50.5 | 31.75 | 1734 | +54.0 |
| 5 | Todorov, Daniel P | 1610 | BUL | +25N | +14B | +11N | −6B | −1B | +8N | +9B | +4N | −2B | 6.0 | 48.5 | 52.5 | 32.50 | 1718 | +44.8 |
| 6 | Ekimov, Ivan | 1606 | BUL | +22N | +19B | +9B | +5N | −2B | −4N | +13B | −17N | +12B | 6.0 | 43.0 | 47.0 | 30.00 | 1695 | +24.0 |
| 7 | Angelov, Veselin | 1610 | BUL | +29B | =27N | +13B | +12N | =4B | −1N | −8B | +20N | +17B | 6.0 | 41.5 | 44.5 | 26.25 | 1567 | -13.2 |
| 8 | Marinov, Dimitar D | 1676 | BUL | +31B | =12N | +27B | −2N | +17B | −5B | +7N | +16B | =10N | 6.0 | 41.5 | 43.5 | 25.75 | 1626 | -16.8 |
| 9 | Kostov, Magnus Konstantin | 1661 | BUL | +15N | +24B | −6N | −4B | +23N | +21B | −5N | +22B | +16N | 6.0 | 39.5 | 43.5 | 25.50 | 1498 | -44.8 |
| 10 | Kapitanski, Furion | 1618 | BUL | +18B | −11N | +20B | +21N | +19B | −2N | −12B | +13N | =8B | 5.5 | 40.5 | 44.5 | 24.50 | 1277 | -64.4 |
| 11 | Danev, Tsvetan | 1508 | BUL | +33N | +10B | −5B | =17N | −12B | +27N | −16N | +18B | +21N | 5.5 | 37.5 | 39.5 | 21.75 | 1482 | +0.8 |
| 12 | Zlatev, Yavor | 1589 | BUL | +32N | =8B | +28N | −7B | +11N | =16B | +10N | −1B | −6N | 5.0 | 44.5 | 46.5 | 21.75 | 1570 | -9.2 |
| 13 | Petrov, Valeri P. | 1427 | BUL | =28N | +3B | −7N | =24B | +22N | +14B | −6N | −10B | +23N | 5.0 | 41.0 | 44.5 | 23.25 | 1523 | 0.0 |
| 14 | Angelov, Boris | 1439 | BUL | +26B | −5N | −17B | +18N | +20B | −13N | +29B | +19N | −4B | 5.0 | 38.0 | 41.0 | 19.50 | 808 | -22.4 |
| 15 | Borisov, Samuil | 0 | BUL | −9B | +30N | −19N | +25B | −16N | −22B | +32B | +26N | +20B | 5.0 | 33.5 | 35.5 | 17.00 | 776 | 0.0 |
| 16 | Dimitrov, Aleksandar M. | 1484 | BUL | +35B | −2N | +29B | −19N | +15B | =12N | +11B | −8N | −9B | 4.5 | 41.0 | 41.0 | 16.00 | 1462 | -8.4 |
| 17 | Simeonov, Petar | 0 | BUL | −27B | F | +14N | =11B | −8N | +18N | +24B | +6B | −7N | 4.5 | 40.5 | 40.5 | 22.25 | 1545 | 0.0 |
| 18 | Drenchev, Mihail | 0 | BUL | −10N | +32B | =24N | −14B | +28N | −17B | +31B | −11N | +27B | 4.5 | 33.5 | 35.5 | 13.00 | 1359 | 0.0 |
| 19 | Yordanov, Kaloyan V | 0 | BUL | F | −6N | +15B | +16B | −10N | −3B | +21N | −14B | +22N | 4.0 | 40.5 | 40.5 | 17.50 | 1325 | 0.0 |
| 20 | Choranov, Borislav | 0 | BUL | +3N | −28B | −10N | +32B | −14N | +26B | +23N | −7B | −15N | 4.0 | 39.5 | 41.5 | 16.50 | 1391 | 0.0 |
| 21 | Kaloyanov, Kaloyan | 0 | BUL | −1B | +34N | +26B | −10B | +24N | −9N | −19B | +29N | −11B | 4.0 | 39.5 | 40.5 | 12.00 | 1392 | 0.0 |
| 22 | Hristov, Georgi | 0 | BUL | −6B | +31N | +34B | −1N | −13B | +15N | +27B | −9N | −19B | 4.0 | 39.0 | 40.0 | 11.50 | 1456 | 0.0 |
| 23 | Dragiev, Teodor | 0 | BUL | −2B | +35N | −1B | +33N | −9B | +31N | −20B | +24N | −13B | 4.0 | 37.0 | 37.0 | 8.00 | 1485 | 0.0 |
| 24 | Iliev, Iliya Iliev | 1538 | BUL | +30B | −9N | =18B | =13N | −21B | +25N | −17N | −23B | +31N | 4.0 | 35.0 | 37.0 | 13.75 | 861 | -13.2 |
| 25 | Georgiev, Stefan K. | 0 | BUL | −5B | −26N | +35B | −15N | +30N | −24B | +33B | −28N | +29B | 4.0 | 30.5 | 30.5 | 8.00 | 774 | 0.0 |
| 26 | Stoyanov, Nikolay P. | 0 | BUL | −14N | +25B | −21N | −31B | +32N | −20N | +30B | −15B | +34N | 4.0 | 29.0 | 30.0 | 10.00 | 640 | 0.0 |
| 27 | Yolov, Kaloyan | 1463 | BUL | +17N | =7B | −8N | +28B | −3N | −11B | −22N | +34B | −18N | 3.5 | 40.5 | 41.5 | 12.00 | 1285 | -30.4 |
| 28 | FIDE 2973260 | 0 | — | =13B | +20N | −12B | −27N | −18B | −29N | F | +25B | +30N | 3.5 | 32.0 | 32.0 | 13.50 | 726 | 0.0 |
| 29 | Hadzhiev, Daniel V. | 0 | BUL | −7N | +33B | −16N | −3B | +35N | +28B | −14N | −21B | −25N | 3.0 | 35.5 | 35.5 | 5.50 | 751 | 0.0 |
| 30 | FIDE 2971739 | 0 | — | −24N | −15B | −3N | +34N | −25B | +35B | −26N | +32B | −28B | 3.0 | 30.0 | 30.0 | 3.00 | 802 | 0.0 |
| 31 | FIDE 2969424 | 0 | — | −8N | −22B | −32N | +26N | +33B | −23B | −18N | F | −24B | 2.0 | 30.5 | 30.5 | 6.00 | 807 | 0.0 |
| 32 | Ivanov, Martin B. | 0 | BUL | −12B | −18N | +31B | −20N | −26B | F | −15N | −30N | +35B | 2.0 | 27.5 | 27.5 | 2.00 | 788 | 0.0 |
| 33 | FIDE 2973162 | 0 | — | −11B | −29N | F | −23B | −31N | +34B | −25N | +35N | F | 2.0 | 19.5 | 19.5 | 1.00 | 678 | 0.0 |
| 34 | FIDE 2973197 | 0 | — | −4N | −21B | −22N | −30B | F | −33N | +35B | −27N | −26B | 1.0 | 26.5 | 26.5 | 0.00 | 735 | 0.0 |
| 35 | FIDE 2972662 | 0 | — | −16N | −23B | −25N | F | −29B | −30N | −34N | −33B | −32N | 0.0 | 23.5 | 23.5 | 0.00 | 690 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Koralov, LyubomirBUL+55.66.5 pts · #6
- 2Taskov, AtanasBUL+55.26.5 pts · #1
- 3Ivanov, DenislavBUL+54.06.0 pts · #2
Top rating losers
- 1Kapitanski, FurionBUL-64.45.5 pts · #21
- 2Kostov, Magnus KonstantinBUL-44.86.0 pts · #13
- 3Yolov, KaloyanBUL-30.43.5 pts · #22
Biggest upsets
- R2+266 Elo gap
- R2+228 Elo gap
- R2+110 Elo gap