Prepare against William Mardh
Sweden · World #50,084 classical · FIDE ID 1792385
When preparing against William Mardh, expect 1.e4 in 95% of White games. Against 1.e4 the reply is 1...c5 (100% of games); against 1.d4, 1...Nf6 (67%).
Our database contains 39 games by William Mardh, covering Nov 2024 to Oct 2026. Below you'll find William Mardh's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout William Mardh before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 1,893 | 1,893 | Oct 2026 |
| Rapid | 1,885 | 1,885 | Oct 2026 |
| Blitz | 1,847 | 1,847 | Oct 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 39 | 22 | 7 | 9 | 56.4% |
| As White | 19 | 9 | 4 | 5 | 47.4% |
| As Black | 20 | 13 | 3 | 4 | 65.0% |
FIDE rated record
From FIDE's official rated-game ledger (2024-2026): 172 rated games against 116 different opponents, across 30 events in 1 countries. These counts cover FIDE-rated play only, so they differ from the database totals above.
By time control
| Format | Games | W | D | L | Win rate | Avg opp | Perf | Unbeaten |
|---|---|---|---|---|---|---|---|---|
| Classical | 26 | 19 | 5 | 2 | 73.1% | 1,703 | 1,932 | 20 |
| Rapid | 124 | 82 | 17 | 25 | 66.1% | 1,618 | 1,767 | 10 |
| Blitz | 22 | 13 | 0 | 9 | 59.1% | 1,659 | 1,609 | 3 |
Against the field
| Opposition | Games | W | D | L | Win rate |
|---|---|---|---|---|---|
| Against higher-rated | 34 | 9 | 6 | 19 | 26.5% |
| Against lower-rated | 88 | 64 | 13 | 11 | 72.7% |
Tournament wins
4 tournament wins from 23 events, 2 of them outright.
Year by year
| Year | Games | W | D | L | Avg opp | Perf |
|---|---|---|---|---|---|---|
| 2026 | 59 | 41 | 10 | 8 | 1,685 | 1,896 |
| 2025 | 98 | 63 | 11 | 24 | 1,616 | 1,717 |
| 2024 | 15 | 10 | 1 | 4 | 1,509 | 1,549 |
Move-by-move preparation stats
Straight from the preparation tree built over all of William Mardh's games — the same tree the interactive prep board lets you walk to any depth. Scores are from William Mardh's side.
First moves as White (19 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 18 | 94.7% | 63.9% |
| d4 | 1 | 5.3% | 0.0% |
Main lines as White
- 1.e4 — 95% of White games, 63.9% score
- …c5 (39% of these games) — Mardh usually continues Nf3 (66.7% score)
- …e5 (33% of these games) — Mardh usually continues Nf3 (50.0% score)
- …e6 (17% of these games) — Mardh usually continues d4 (83.3% score)
- 1.d4 — 5% of White games, 0.0% score
- …f5 (100% of these games) — Mardh usually continues c4 (0.0% score)
As Black against 1.e4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 12 | 100.0% | 75.0% |
As Black against 1.d4 (6 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 4 | 66.7% | 62.5% |
| f5 | 2 | 33.3% | 50.0% |
William Mardh's chess games
All 39 games by William Mardh in the Chess.ceo database (Nov 2024 - Oct 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 22 wins, 7 draws, 9 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C65 | Ruy Lopez: Berlin Defense | 3 | 2/0/1 | 66.7% |
| B20 | Sicilian | 3 | 2/1/0 | 66.7% |
| C13 | French: Classical Variation | 1 | 0/1/0 | 0.0% |
| C10 | French Defense | 1 | 1/0/0 | 100.0% |
| C18 | French: Winawer Variation | 1 | 1/0/0 | 100.0% |
| C95 | Ruy Lopez: Closed | 1 | 0/0/1 | 0.0% |
| C70 | Ruy Lopez: Morphy Defense | 1 | 0/1/0 | 0.0% |
| C63 | Ruy Lopez: Schliemann | 1 | 0/0/0 | 0.0% |
| B01 | Scandinavian Defense: Modern Variation | 1 | 1/0/0 | 100.0% |
| B75 | Sicilian: Dragon | 1 | 1/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B90 | Sicilian: Najdorf | 6 | 4/1/1 | 66.7% |
| B50 | Sicilian | 2 | 2/0/0 | 100.0% |
| B22 | Sicilian: Alapin | 2 | 2/0/0 | 100.0% |
| E97 | King's Indian Defense: Orthodox Variation | 2 | 1/0/1 | 50.0% |
| A80 | Dutch Defense | 2 | 1/0/1 | 50.0% |
| B23 | Sicilian: Closed | 1 | 0/1/0 | 0.0% |
| B21 | Sicilian: Smith-Morra Gambit | 1 | 0/0/1 | 0.0% |
| A34 | English Opening | 1 | 1/0/0 | 100.0% |
| A45 | London System | 1 | 0/1/0 | 0.0% |
| A01 | Nimzovich-Larsen attack | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2026 | Leo Blom | 1,915 | Kadettallsvenskans final 2026 | B84 |
| Jun 2026 | Emil 2013 Dahlin | 1,894 | Schack-SM 2026 | Minior-SM | B90 |
| Sep 2026 | Orvar Holm Brynjarsson | 1,798 | Nordic School Team Chess Championships 2026 - Group A (U17) | B90 |
| Oct 2026 | Qianru Zhong | 1,765 | Skol-SM 2026 | A84 |
| Apr 2026 | Edgar Huang | 1,731 | Wasa JGP 2026 Klass C | B22 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Schack-SM 2026 | Minior-SM | 2026 | 8 | 7.5 | 2,089 |
| Skol-SM 2026 | 2026 | 7 | 4 | 1,755 |
| Stockholms Junior-DM 2026 | 2026 | 7 | 4 | 1,768 |
| Wasa JGP 2026 Klass C | 2026 | 7 | 6 | 1,888 |
| Kadettallsvenskans final 2026 | 2026 | 5 | 1 | 1,781 |
| Nordic School Team Chess Championships 2026 - Group A (U17) | 2026 | 5 | 3 | 1,969 |
Interactive opening tree from all 39 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find William Mardh's chess games?
39 games by William Mardh, from Nov 2024 to Oct 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line William Mardh has played.
What does William Mardh play on the first move as White?
Across 19 games with White in our database, William Mardh opens with 1.e4 (95% of games), 1.d4 (5% of games). Against 1.e4 as Black, William Mardh answers 1...c5 (100% of games). Against 1.d4: 1...Nf6 (67% of games), 1...f5 (33% of games).
What openings does William Mardh play as White?
As White, William Mardh's most-played openings in our database are: Ruy Lopez: Berlin Defense (3 games, 66.7% win rate); Sicilian (3 games, 66.7% win rate); French: Classical Variation (1 games, 0.0% win rate). The full breakdown of 19 games with White is in the table above.
What openings does William Mardh play as Black?
As Black, William Mardh most often plays: Sicilian: Najdorf (6 games, 66.7% win rate); Sicilian (2 games, 100.0% win rate); Sicilian: Alapin (2 games, 100.0% win rate). See the table above for the top ten Black openings across 20 games.
What is William Mardh's FIDE rating?
William Mardh is currently rated 1,893 in classical chess, 1,885 in rapid and 1,847 in blitz. Peak classical rating: 1,893 (Oct 2026).
How many games has William Mardh played?
Our database contains 39 games by William Mardh, covering Nov 2024 to Oct 2026. Overall record: 22 wins, 7 draws, 9 losses (56.4% win rate).
How do I prepare against William Mardh?
39 games by William Mardh reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.