NM for barn og ungdom 2025 F
Open SwissStandard
38 players participated in this 8-round tournament, held from 14 Nov 2025 to 16 Nov 2025 in Oslo, Norway. Top 10 Elo average was 1652, and top seed was Michael Mortensen (🇳🇴 NOR, 1868).
Michael Mortensen (🇳🇴 NOR, 1868) won with 4.5/8, ahead of Askil Bjornarson Backer (3.5) and Ella Ouyang (3.5). Mortensen won solo starting round 6.
The biggest upset came in round 4: Audun Rimbereid Oyri (1460) beat Thea Alexandra Homtako (1757), a +297-point gap.
Location
🇳🇴Oslo, Norway
Dates
14 Nov 2025 → 16 Nov 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 8 rounds
Federations · 1 represented
🇳🇴Norway×30
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 8 roundsMichael Mortensen led from R6; +1.0-point edge over the runner-up. Title race converged from 19 co-leaders at R4 to 1 by R6.
Co-leaders
50
50
50
19
8
1
1
1
R6–R8 · LEAD HELD
Michael Mortensen never relinquished the lead after R6; final gap +1.0 over the runner-up.
R8 · HEAD-TO-HEAD · WINNER VS 2ND
Michael Mortensen drew with Ella Ouyang (Black).
R4–R7 · WIN STREAK
Michael Mortensen won 4 in a row (R4–R7).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Michael Mortensen | * | ½ | 1 | — |
| 2Ella Ouyang | ½ | * | — | ½ |
| 3Anton Bae | 0 | — | * | — |
| 4Askil Bjornarson Backer | — | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mortensen, Michael | 1868 | NOR | F | F | F | +6N | +24B | +5N | +17B | =3N | 4.5 | 15.0 | 15.0 | 13.25 | 1934 | +11.2 |
| 2 | Backer, Askil Bjornarson | 1585 | NOR | F | F | F | +13B | +19N | =3B | −12N | +4N | 3.5 | 15.5 | 15.5 | 10.75 | 1584 | +0.4 |
| 3 | Ouyang, Ella | 1491 | NOR | F | F | F | =17B | +12N | =2N | +26B | =1B | 3.5 | 15.5 | 15.5 | 10.25 | 1776 | +72.4 |
| 4 | Blaauw, Olivia | 1423 | NOR | F | F | F | +16N | +27N | =15B | +9N | −2B | 3.5 | 15.0 | 15.0 | 10.00 | 1527 | 0.0 |
| 5 | Hellebo, Theodor Mend | 1597 | NOR | F | F | F | +27B | =18N | −1B | +21N | +12B | 3.5 | 14.5 | 14.5 | 8.75 | 1738 | +21.2 |
| 6 | Bae, Anton | 1703 | NOR | F | F | F | −1B | +15N | +26N | =11B | +24N | 3.5 | 14.5 | 14.5 | 8.50 | 1702 | +0.8 |
| 7 | Grunnan, Theo | 1507 | NOR | F | F | F | +30B | −13N | +31B | +29N | =19B | 3.5 | 11.5 | 11.5 | 7.25 | 1246 | -27.6 |
| 8 | Jensen, Daniel Engedal | 1574 | NOR | F | F | F | +29B | −14N | +36B | =23N | +35B | 3.5 | 10.0 | 10.0 | 5.75 | 645 | -26.8 |
| 9 | Maurstad, Anker Moe | 1473 | NOR | F | F | F | +37N | +34B | =35N | −4B | +25N | 3.5 | 9.5 | 9.5 | 5.25 | 2225 | +17.2 |
| 10 | Nome, Sigrid | 1491 | NOR | F | F | F | +?N | −11B | +?N | +28B | =22N | 3.5 | 7.5 | 7.5 | 3.25 | 786 | 0.0 |
| 11 | Alhat, Advay | 1586 | NOR | F | F | F | =21B | +10N | =18B | =6N | =14B | 3.0 | 15.0 | 15.0 | 9.25 | 1635 | +8.0 |
| 12 | Hrituleac, Sofia | 1588 | NOR | F | F | F | +35N | −3B | +22N | +2B | −5N | 3.0 | 14.5 | 14.5 | 7.50 | 1432 | -25.2 |
| 13 | Valved, Ole Grothe | 1411 | NOR | F | F | F | −2N | +7B | −25N | +27B | +26N | 3.0 | 13.0 | 13.0 | 7.50 | 1508 | +21.6 |
| 14 | Mylam, Mahatej Reddy | 1443 | NOR | F | F | F | F | +8B | +20B | =18N | =11N | 3.0 | 11.5 | 11.5 | 8.75 | 1828 | +78.4 |
| 15 | Valderhaug, Casper | 1532 | NOR | F | F | F | +34N | −6B | =4N | +25B | =?N | 3.0 | 10.5 | 10.5 | 5.25 | 1542 | 0.0 |
| 16 | Nielsen, Sebastian Ambrosius | 1551 | NOR | F | F | F | −4B | =?N | +?B | =?N | +?B | 3.0 | 3.5 | 3.5 | 0.00 | 1485 | 0.0 |
| 17 | Kethulle, Tim De La | 1586 | NOR | F | F | F | =3N | +23B | +24N | −1N | −18B | 2.5 | 15.0 | 15.0 | 6.25 | 1557 | -8.8 |
| 18 | Homtako, Thea Alexandra | 1757 | NOR | F | F | F | −24B | =5B | =11N | =14B | +17N | 2.5 | 14.0 | 14.0 | 7.25 | 1534 | -55.2 |
| 19 | Klow, Asmund | 1469 | NOR | F | F | F | +28B | −2B | +23N | −24B | =7N | 2.5 | 13.5 | 13.5 | 6.25 | 1243 | -32.8 |
| 20 | Kleka, Olivier | 1626 | NOR | F | F | F | +22N | −26B | −14N | +33B | =21N | 2.5 | 12.0 | 12.0 | 5.75 | 681 | -55.6 |
| 21 | Anderson, Iver Gjelstenli | 1447 | NOR | F | F | F | =11N | +25B | =?N | −5B | =20B | 2.5 | 11.0 | 11.0 | 4.75 | 1546 | 0.0 |
| 22 | Kvammen, Mikkel | 1453 | NOR | F | F | F | −20B | +28N | −12B | +?N | =10B | 2.5 | 11.0 | 11.0 | 3.75 | 807 | 0.0 |
| 23 | Holter, Aleksander | 0 | NOR | F | F | F | +?B | −17N | −19B | =8B | +34N | 2.5 | 10.0 | 10.0 | 3.25 | 1440 | 0.0 |
| 24 | Oyri, Audun Rimbereid | 1460 | NOR | F | F | F | +18N | −1N | −17B | +19N | −6B | 2.0 | 15.5 | 15.5 | 5.00 | 1602 | +30.4 |
| 25 | Opsen, Evelin Nilsen | 1425 | NOR | F | F | F | +32B | −21N | +13B | −15N | −9B | 2.0 | 14.0 | 14.0 | 5.00 | 1440 | +2.0 |
| 26 | Samdal, Sigurd Jyssum | 1517 | NOR | F | F | F | +36B | +20N | −6B | −3N | −13B | 2.0 | 13.5 | 13.5 | 3.50 | 1364 | -31.6 |
| 27 | Wintervold, Ylva | 1627 | NOR | F | F | F | −5N | −4B | +30B | −13N | +36B | 2.0 | 13.0 | 13.0 | 3.00 | 703 | 0.0 |
| 28 | FIDE 1594281 | 0 | — | F | F | F | −19N | −22B | +?B | −10N | +29B | 2.0 | 10.5 | 10.5 | 2.00 | 669 | 0.0 |
| 29 | Saba, Leon Maximilian | 1438 | NOR | F | F | F | −8N | +?B | +?N | −7B | −28N | 2.0 | 9.0 | 9.0 | 0.00 | 740 | 0.0 |
| 30 | FIDE 1594192 | 0 | — | F | F | F | −7N | +37B | −27N | +38B | −?N | 2.0 | 7.5 | 7.5 | 2.00 | 707 | 0.0 |
| 31 | FIDE 556002807 | 0 | — | F | F | F | +?N | +?B | −7N | −36N | −?B | 2.0 | 4.5 | 4.5 | 0.00 | 707 | 0.0 |
| 32 | FIDE 556002777 | 0 | — | F | F | F | −25N | −?B | +?N | −34B | +?N | 2.0 | 3.5 | 3.5 | 0.00 | 625 | 0.0 |
| 33 | FIDE 556002823 | 0 | — | F | F | F | =?B | +?N | =?B | −20N | −?B | 2.0 | 2.5 | 2.5 | 0.00 | 756 | 0.0 |
| 34 | Fossgard, William Peder | 0 | NOR | F | F | F | −15B | −9N | =?B | +32N | −23B | 1.5 | 11.0 | 11.0 | 2.00 | 1286 | 0.0 |
| 35 | Blaue-Poppy, Bela Lucian | 0 | NOR | F | F | F | −12B | +?N | =9B | −?B | −8N | 1.5 | 10.0 | 10.0 | 1.75 | 1374 | 0.0 |
| 36 | FIDE 1594206 | 0 | — | F | F | F | −26N | −?B | −8N | +31B | −27N | 1.0 | 9.5 | 9.5 | 2.00 | 729 | 0.0 |
| 37 | FIDE 1594265 | 0 | — | F | F | F | −9B | −30N | −?B | =?N | =?B | 1.0 | 5.5 | 5.5 | 0.00 | 672 | 0.0 |
| 38 | FIDE 1594222 | 0 | — | F | F | F | −?N | −?B | +?N | −30N | −?B | 1.0 | 2.0 | 2.0 | 0.00 | 698 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Mylam, Mahatej ReddyNOR+78.43.0 pts · #3
- 2Ouyang, EllaNOR+72.43.5 pts · #2
- 3Oyri, Audun RimbereidNOR+30.42.0 pts · #8
Top rating losers
- 1Kleka, OlivierNOR-55.62.5 pts · #36
- 2Homtako, Thea AlexandraNOR-55.22.5 pts · #5
- 3Klow, AsmundNOR-32.82.5 pts · #24
Biggest upsets
- R4+297 Elo gap
- R7+216 Elo gap
- R5+204 Elo gap