International chess tournamment for kids"Shumen 2025", Chess Autumn U10, under the aegis of BSCF
Open SwissStandard
16 players participated in this 6-round tournament, held from 04 Oct 2025 to 05 Oct 2025 in Shumen, Bulgaria. 2 federations represented. Top 10 Elo average was 899, and top seed was Daniel Tokmachov (🇺🇸 USA, 1616).
Ivona Ruseva (🇧🇬 BUL, 1402) won with 5.5/6, ahead of Dobromir Totev (5.0) and Tsvetan Danev (4.5). Ruseva shared the lead from round 5 and broke clear in the final round.
The biggest upset came in round 6: Ivona Ruseva (1402) beat Tsvetan Danev (1591), a +189-point gap.
Location
🇧🇬Shumen, Bulgaria
Dates
04 Oct 2025 → 05 Oct 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 6 rounds
Federations · 2 represented
🇧🇬Bulgaria×10
🇺🇸United States of America×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsIvona Ruseva led from R6; +0.5-point edge over the runner-up.
Co-leaders
8
4
2
1
2
1
R6 · LEADER CHANGE05 Oct
Ivona Ruseva takes the sole lead (5.5/6).
WIN STREAKS · 3 top finishers
Ivona Ruseva 4 wins (R3–R6)Dobromir Totev 3 wins (R4–R6)Tsvetan Danev 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ivona Ruseva | * | — | 1 | ½ |
| 2Dobromir Totev | — | * | — | 1 |
| 3Tsvetan Danev | 0 | — | * | ½ |
| 4Daniel Tokmachov | ½ | 0 | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ruseva, Ivona | 1402 | BUL | +8N | =4B | +10N | +9B | +6N | +3N | 5.5 | 18.5 | 21.5 | 19.50 | 1884 | +87.2 |
| 2 | Totev, Dobromir | 0 | BUL | +?B | +16N | −6N | +5B | +8N | +4B | 5.0 | 15.0 | 15.0 | 11.50 | 1606 | 0.0 |
| 3 | Danev, Tsvetan | 1591 | BUL | +15N | +10B | +9N | +6B | =4N | −1B | 4.5 | 19.0 | 20.0 | 12.50 | 1604 | +5.6 |
| 4 | Tokmachov, Daniel | 1616 | USA | +16B | =1N | +7B | +11N | =3B | −2N | 4.0 | 20.5 | 20.5 | 10.50 | 1626 | +0.8 |
| 5 | Racheva, Mihaela | 0 | BUL | −7B | +?N | +13B | −2N | +11B | +9B | 4.0 | 14.5 | 14.5 | 6.00 | 705 | 0.0 |
| 6 | Dragiev, Teodor | 1525 | BUL | +12B | +13N | +2B | −3N | −1B | =7N | 3.5 | 20.5 | 21.5 | 9.75 | 1228 | -54.8 |
| 7 | Hristov, Georgi | 1450 | BUL | +5N | −9B | −4N | +12B | +10N | =6B | 3.5 | 17.5 | 19.5 | 10.75 | 1538 | +5.6 |
| 8 | FIDE 2976080 | 0 | — | −1B | +12N | =?B | +14N | −2B | +15N | 3.5 | 14.5 | 14.5 | 4.00 | 620 | 0.0 |
| 9 | Borisov, Samuil | 0 | BUL | +14B | +7N | −3B | −1N | +?B | −5N | 3.0 | 18.5 | 18.5 | 4.50 | 1376 | 0.0 |
| 10 | Piseva, Marina | 1402 | BUL | +11B | −3N | −1B | +13N | −7B | +14N | 3.0 | 16.5 | 17.5 | 4.00 | 701 | -44.4 |
| 11 | FIDE 2968380 | 0 | — | −10N | +15B | +14N | −4B | −5N | −12B | 2.0 | 14.0 | 15.0 | 2.00 | 711 | 0.0 |
| 12 | Petrova, Viktoriya | 0 | BUL | −6N | −8B | F | −7N | +13B | +11N | 2.0 | 13.5 | 13.5 | 3.00 | 749 | 0.0 |
| 13 | Velkov, Yavor | 0 | BUL | F | −6B | −5N | −10B | −12N | +16B | 1.0 | 12.5 | 12.5 | 0.00 | 698 | 0.0 |
| 14 | FIDE 2973758 | 0 | — | −9N | F | −11B | −8B | +16N | −10B | 1.0 | 11.5 | 11.5 | 0.00 | 603 | 0.0 |
| 15 | FIDE 2974363 | 0 | — | −3B | −11N | +16B | −?N | F | −8B | 1.0 | 10.0 | 10.0 | 0.00 | 777 | 0.0 |
| 16 | FIDE 2976072 | 0 | — | −4N | −2B | −15N | F | −14B | −13N | 0.0 | 12.0 | 12.0 | 0.00 | 819 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Ruseva, IvonaBUL+87.25.5 pts · #1
- 2Danev, TsvetanBUL+5.64.5 pts · #2
- 3Hristov, GeorgiBUL+5.63.5 pts · #4
Top rating losers
- 1Dragiev, TeodorBUL-54.83.5 pts · #7
- 2Piseva, MarinaBUL-44.43.0 pts · #11
- 3Petrova, ViktoriyaBUL0.02.0 pts · #16
Biggest upsets
- R6+189 Elo gap
- R5+123 Elo gap