Player profile

Mardh, William

Standard: 1893 Rapid: 1845 Blitz: 1733 (last updated 2026-11-02)

FIDE ID: 1792385 (view FIDE profile)

Federation: SWE Sex: M Birth Year: 2013 Age: 13

Title: — Women's title: — Other title: — FOA title: —

Games: 44 Wins: 22 (50%) Draws: 11 (25%) Losses: 9 (20%) Other: 2

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Dossier

39 of 44 games analyzed.

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Openings

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As White 22 games 9W 7D 5L

Sicilian Defense 7 games 4W 1D 2L

(unspecified) 2 games 1W 1D 0L

Lasker-Pelikan Variation 1 game 0W 0D 1L

Sveshnikov Variation, Chelyabinsk Variation 1 game 0W 0D 1L

Najdorf Variation 1 game 0W 0D 1L

Opocensky Variation 1 game 0W 0D 1L

Four Knights Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Dragon Variation 1 game 1W 0D 0L

Yugoslav Attack, Early Deviations 1 game 1W 0D 0L

Open 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Ruy Lopez 6 games 2W 1D 2L

Berlin Defense 2 games 2W 0D 0L

(unspecified) 1 game 1W 0D 0L

Improved Steinitz Defense 1 game 1W 0D 0L

Morphy Defense 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Schliemann Defense 1 game 0W 0D 0L

Dyckhoff Variation 1 game 0W 0D 0L

Classical Variation 1 game 0W 0D 1L

Zukertort Gambit 1 game 0W 0D 1L

Closed 1 game 0W 0D 1L

Breyer Defense, Zaitsev Hybrid 1 game 0W 0D 1L

French Defense 4 games 2W 2D 0L

Classical Variation 1 game 0W 1D 0L

Normal Variation 1 game 0W 1D 0L

Winawer Variation 1 game 1W 0D 0L

Poisoned Pawn Variation, Main Line 1 game 1W 0D 0L

Marshall Gambit 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Rubinstein Variation 1 game 0W 1D 0L

Blackburne Defense 1 game 0W 1D 0L

Caro-Kann Defense 3 games 0W 3D 0L

Advance Variation 2 games 0W 2D 0L

Tal Variation 2 games 0W 2D 0L

(unspecified) 1 game 0W 1D 0L

Dutch Defense 1 game 0W 0D 1L

Rubinstein Variation 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Scandinavian Defense 1 game 1W 0D 0L

Modern Variation 1 game 1W 0D 0L

Gipslis Variation 1 game 1W 0D 0L

As Black 22 games 13W 4D 4L

Sicilian Defense 12 games 8W 2D 2L

Scheveningen Variation 4 games 3W 0D 1L

Classical Variation 2 games 1W 0D 1L

English Attack, with f3 2 games 2W 0D 0L

Najdorf Variation 2 games 1W 1D 0L

Adams Attack 1 game 1W 0D 0L

English Attack 1 game 0W 1D 0L

Alapin Variation 2 games 2W 0D 0L

Barmen Defense, Central Exchange 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Grand Prix Attack 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Modern Variations 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Delayed Alapin Variation 1 game 1W 0D 0L

with d6 1 game 1W 0D 0L

Smith-Morra Gambit Declined 1 game 0W 0D 1L

Push Variation 1 game 0W 0D 1L

King's Indian Defense 3 games 1W 0D 1L

Orthodox Variation 2 games 1W 0D 1L

Bayonet Attack 1 game 1W 0D 0L

Aronin-Taimanov Defense 1 game 0W 0D 1L

Normal Variation 1 game 0W 0D 0L

Rare Defenses 1 game 0W 0D 0L

Dutch Defense 2 games 1W 0D 1L

Hopton Attack 1 game 0W 0D 1L

(unspecified) 1 game 0W 0D 1L

Rubinstein Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

English Opening 2 games 1W 1D 0L

Symmetrical Variation 2 games 1W 1D 0L

Rubinstein Variation 1 game 1W 0D 0L

Full Symmetry Line 1 game 0W 1D 0L

Rapport-Jobava System 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

London System 1 game 0W 1D 0L

(unspecified) 1 game 0W 1D 0L

Nimzo-Larsen Attack 1 game 1W 0D 0L

Modern Variation 1 game 1W 0D 0L

(unspecified) 1 game 1W 0D 0L

Blunders Top 4 of 184

This player's costliest moves in analyzed games. Can you find the winning move?

2026.10.09 · 34. Qg4 (−74.4% win chance) 0-1

Bonnevier, Adrian

Mardh, William

Engine View game

2026.10.09 · 33. Rxf5 (−69% win chance) 0-1

Bonnevier, Adrian

Mardh, William

Engine View game

2026.10.30 · 45. Qh4+ (−45.7% win chance) 1/2-1/2

Lux,Hugo de Melo

Mardh, William

Engine View game

2026.04.24 · 44... Ra8 (−42.9% win chance) 1-0

Mardh, William

Srinivasson, Raghav

Engine View game

View blunders & mistakes

Games Showing all 44 games

Date	Event	Round	Opponent	Result	Accuracy %	First moves
2026.10.30	Round 1: Mardh, William - Lux,Hugo de Melo	1.12	2026.10.30 Lux,Hugo de Melo (2138298) (2339)	½	79.80%	1. e4 c6 2. d4 g6 3. Nf3 d5
2026.10.11	Round 8: Mardh, William - Modig, Ville	8.23	2026.10.11 Modig, Ville (1777858) (1828)	½	87.80%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2026.10.11	Round 7: Gohlin Skoglund, Noel - Mardh, William	7.24	2026.10.11 Gohlin Skoglund, Noel (1785761) (1510)	1	89.20%	1. d4 Nf6 2. Nc3 d5 3. Bf4 c6
2026.10.10	Round 5: Ma, Hiram - Mardh, William	5.22	2026.10.10 Ma, Hiram (1783220) (1983)	0	87.20%	1. d4 f5 2. Bg5 h6 3. Bh4 g5
2026.10.10	Round 4: Zhong, Qianru - Mardh, William	4.22	2026.10.10 Zhong, Qianru (1762052) (1765)	1	87.60%	1. d4 f5 2. c4 e6 3. Nc3 Nf6
2026.10.10	Round 3: Mardh, William - Erdenoz, Bilge Kagan	3.21	2026.10.10 Erdenoz, Bilge Kagan (51698870) (1777)	½	83.30%	1. e4 c5 2. Be2 e6 3. d3 Qc7
2026.10.09	Round 2: Mardh, William - Bonnevier, Adrian	2.22	2026.10.09 Bonnevier, Adrian (563000571) (1511)	0	57.20%	1. d4 f5 2. c4 e6 3. Nc3 Nf6
2026.10.09	Round 1: Mardh, William - Bonnevier, Adrian	1.22	2026.10.09 Bonnevier, Adrian (563000571) (1511)	1	89.70%	1. e4 d5 2. exd5 Nf6 3. d4 Nxd5
2026.09.13	Round 5: Mardh, William - Abbas, Yousf Layth	5.6	2026.09.13 Abbas, Yousf Layth (1590839) (1842)	*	-	1. e4 e5 2. Nf3 Nc6 3. Bb5 f5
2026.09.13	Round 4: Brynjarsson, Orvar Holm - Mardh, William	4.10	2026.09.13 Brynjarsson, Orvar Holm (2321726) (1798)	1	94.50%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.09.12	Round 3: Joonas Repo - Mardh, William	3.2	2026.09.12 Joonas Repo	½	86.90%	1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7
2026.09.12	Round 2: Mardh, William - Khandelia, Atharva	2.10	2026.09.12 Khandelia, Atharva (1473255) (1723)	1	94.20%	1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6
2026.09.11	Round 1: Larsson, Elin - Mardh, William	1.6	2026.09.11 Larsson, Elin (1771787) (1873)	½	81.30%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.08.30	Round 7: Ekbom, Mikael - Mardh, William	7.9	2026.08.30 Ekbom, Mikael (1779966) (1654)	1	93.70%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2026.08.30	Round 6: Wikman, Viktor 2006 - Mardh, William	6.6	2026.08.30 Wikman, Viktor 2006 (1744720) (1831)	0	86.20%	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2026.08.29	Round 5: Mardh, William - Kruse, Simon	5.8	2026.08.29 Kruse, Simon (1795309) (1771)	0	-	1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6
2026.08.29	Round 4: Larsson, Ilke - Mardh, William	4.9	2026.08.29 Larsson, Ilke (1793152) (1637)	1	81.60%	1. c4 c5 2. g3 Nf6 3. Bg2 d5
2026.08.28	Round 3: Mardh, William - Hardwick, Hugo	3.8	2026.08.28 Hardwick, Hugo (1767569) (1884)	½	97.60%	1. e4 e6 2. d4 d5 3. Nc3 Nf6
2026.08.28	Round 2: Hjalte, Eric - Mardh, William	2.12	2026.08.28 Hjalte, Eric (1780344) (1677)	½	83.90%	1. e4 c5 2. Nc3 Nc6 3. f4 e6
2026.08.28	Round 1: Mardh, William - Srinivasson, Raghav	1.12	2026.08.28 Srinivasson, Raghav (1789643) (1528)	1	97.50%	1. e4 e6 2. d4 d5 3. Nc3 Bb4
2026.08.09	Round 5: Mardh, William - Malmquist, Neo	5.2	2026.08.09 Malmquist, Neo (1774387) (2040)	0	87.60%	1. e4 c5 2. Nf3 Nc6 3. d4 cxd4
2026.08.08	Round 3: Mardh, William - Islam, Umair	3.8	2026.08.08 Islam, Umair (1790382) (1932)	0	87.40%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.08.08	Round 2: Bergdahl, Daniel - Mardh, William	2.14	2026.08.08 Bergdahl, Daniel (1780921) (2049)	0	-	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.08.07	Round 1: Blom, Leo - Mardh, William	1.8	2026.08.07 Blom, Leo (1787551) (1915)	1	93.60%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.07.27	Round 4: Mardh, William - Preman, Nathan	4.1	2026.07.27 Preman, Nathan (1772970) (2173)	0	88.10%	1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
2026.07.04	Round 9: Tacchino, Stella - Mardh, William	9.1	2026.07.04 Tacchino, Stella (23463414)	1	94.70%	1. e4 c5 2. Nf3 d6 3. Bc4 Nf6
2026.07.03	Round 8: Mardh, William - Siljedahl, Jon	8.1	2026.07.03 Siljedahl, Jon (1796879) (1705)	1	91.30%	1. e4 c5 2. Nf3 Nc6 3. d4 cxd4
2026.07.02	Round 7: Lang Sohl, Benjamin - Mardh, William	7.1	2026.07.02 Lang Sohl, Benjamin (1790250) (1707)	1	98.00%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.07.02	Round 6: Mardh, William - Thamarai, Yohan	6.1	2026.07.02 Thamarai, Yohan (1773011) (1878)	½	85.10%	1. e4 c6 2. d4 d5 3. e5 Bf5
2026.06.30	Round 5: Mardh, William - Cornfors, Theodor	5.1	2026.06.30 Cornfors, Theodor (1777181) (1718)	1	95.10%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.06.30	Round 4: Dahlin, Emil 2013 - Mardh, William	4.1	2026.06.30 Dahlin, Emil 2013 (1771035) (1894)	1	86.80%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.06.29	Round 3: Modig, Ville - Mardh, William	3.3	2026.06.29 Modig, Ville (1777858) (1682)	1	-	1. e4 c5 2. c3 d5 3. exd5 Qxd5
2026.06.29	Round 2: Mardh, William - Jiang, Fanan	2.3	2026.06.29 Jiang, Fanan (1781022) (1592)	1	92.30%	1. e4 c5 2. Nf3 d6 3. d4 cxd4
2026.06.28	Round 1: Astorga Qviberg, Emil - Mardh, William	1.3	2026.06.28 Astorga Qviberg, Emil (1793608)	*	-	1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
2026.04.25	Wasa Junior Grand Prix	8.3	2026.04.25 Huang, Edgar (1774816) (1731)	1	92.40%	1. e4 c5 2. c3 d5 3. e5 d4
2026.04.25	Wasa Junior Grand Prix	6.3	2026.04.25 Prabu, Anjay (1786792) (1635)	1	94.90%	1. b3 e5 2. Bb2 Nc6 3. e4 Bc5
2026.04.25	Wasa Junior Grand Prix	5.4	2026.04.25 Kruse, Simon (1795309) (1582)	1	92.40%	1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6
2026.04.25	Wasa Junior Grand Prix	2.2	2026.04.25 Razavi, Arman (1788167) (1551)	1	89.60%	1. e4 c5 2. Nf3 d6 3. c3 Nf6
2026.04.25	Wasa Junior Grand Prix	1.2	2026.04.25 Jevdjovic, Jaan (563003767) (1447)	1	91.00%	1. e4 c5 2. Nf3 Nc6 3. d4 cxd4
2026.04.24	Wasa Junior Grand Prix	7.1	2026.04.24 Thamarai, Yohan (1773011) (1823)	½	85.40%	1. e4 c6 2. d4 d5 3. e5 Bf5
2026.04.24	Wasa Junior Grand Prix	4.1	2026.04.24 Srinivasson, Raghav (1789643) (1693)	0	83.70%	1. e4 c5 2. d4 cxd4 3. c3 d3
2026.04.24	Wasa Junior Grand Prix	3.1	2026.04.24 Cui, Ian (1793926) (1582)	1	93.50%	1. e4 e6 2. d4 d5 3. Nc3 c5
2025.10.31	Round 8: Magnusson, Julius - Mardh, William	8.19	2025.10.31 Magnusson, Julius (1778951) (1643)	½	81.00%	1. c4 c5 2. Nc3 g6 3. g3 Bg7
2025.10.11	Skol-SM 2025 Kalmar	4.16	2025.10.11 Andreasson, Leo (1768980) (1721)	½	90.30%	1. e4 e6 2. d4 d5 3. Nc3 dxe4