SM

Seph Miedema

Rated since February 2026

1204 Rapid

RIVALRY

Nemesis
Kumar, A. (Aditya)
Games: 3 · Win rate: 33%
Easy Target
Vulker, S. (Siebren)
Games: 3 · Win rate: 100%

The good & the bad

Best wins
MAGYAR PUIG, M. (MERLIN) 1227
13343 JCC-E Leidse Schaakbond Ronde 456 · Saturday 21 March 2026
CALUWÉ DE, Y. (YANNIC) 1164
11676 GrandPrix Leiderdorp Groep A · Sunday 15 March 2026
REITSEMA, D. (DAAN) 1163
11674 GrandPrix De Vrijpionnen Voorhout Groep A · Saturday 14 February 2026
MOLENKAMP, E. (EMMA) 1162
11676 GrandPrix Leiderdorp Groep A · Sunday 15 March 2026
KUMAR, A. (ADITYA) 1159
11676 GrandPrix Leiderdorp Groep A · Sunday 15 March 2026
Worst losses
HOORNWEG, J.F. (JOËL) 701
11673 GrandPrix Philidor Leiden Groep A · Saturday 3 January 2026
IERSEL VAN, T. (TOM) 1039
11674 GrandPrix De Vrijpionnen Voorhout Groep A · Saturday 14 February 2026
CHEN, J. (JUNHUI) 1040
13343 JCC-E Leidse Schaakbond Ronde 456 · Saturday 21 March 2026
WILDE DE, J. (JOEL) 1098
11674 GrandPrix De Vrijpionnen Voorhout Groep A · Saturday 14 February 2026
ESWAR GANESAN, A. (AAMODHANA) 1119
11676 GrandPrix Leiderdorp Groep A · Sunday 15 March 2026
No FIDE-rated tournaments found.
JCC-E Leidse Schaakbond Ronde 456 Saturday 21 March 2026 +1–2=0 -17.6
JCC-E Leidse Schaakbond Ronde 123 Saturday 21 March 2026 +1–2=0 -17.6
GrandPrix Leiderdorp Groep A Sunday 15 March 2026 +5–2=0 +66.4
GrandPrix De Vrijpionnen Voorhout Groep A Saturday 14 February 2026 +5–2=0 +94.9
PK-E van de Leidse Schaakbond Groep B Sunday 11 January 2026 +6–0=1
GrandPrix Philidor Leiden Groep A Saturday 3 January 2026 +6–1=0
GrandPrix de Vrijpionnen Voorhout Groep A Saturday 1 March 2025 +5–1=0

Rating History

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Peak Ratings

Rapid 1204 May 1, 2026

Games

Wins 29
Losses 10
Draws 1
Win Rate 72%

Performance by Color

Color Wins Draws Losses Win Rate
White 13 1 4 72%
Black 16 0 6 73%

Recent Matches

Magyar Puig, M. (Merlin) (1227) Saturday 21 March 2026 WIN +27.1
Chen, J. (Junhui) (1040) Saturday 21 March 2026 LOSS -29.4
Kumar, A. (Aditya) (1272) Saturday 21 March 2026 LOSS -15.3
Magyar Puig, M. (Merlin) (1227) Saturday 21 March 2026 LOSS -17.9
Chen, J. (Junhui) (1040) Saturday 21 March 2026 WIN +15.6
Kumar, A. (Aditya) (1272) Saturday 21 March 2026 LOSS -15.3
Molenkamp, E. (Emma) (1162) Sunday 15 March 2026 WIN +23.1
Kumar, A. (Aditya) (1159) Sunday 15 March 2026 WIN +22.9
Iersel van, T. (Tom) (1153) Sunday 15 March 2026 WIN +22.5
Eswar Ganesan, A. (Aamodhana) (1119) Sunday 15 March 2026 LOSS -24.7
Bakker, S. (Sem) (1130) Sunday 15 March 2026 WIN +21.1
Srivastava, S. (Shaurya) (1166) Sunday 15 March 2026 LOSS -21.7
Caluwé de, Y. (Yannic) (1164) Sunday 15 March 2026 WIN +23.2
Reitsema, D. (Daan) (1163) Saturday 14 February 2026 WIN +35.4
Hodzic, E. (Emina) (1034) Saturday 14 February 2026 WIN +25.9
Reitsema, J. (Job) (1045) Saturday 14 February 2026 WIN +26.8
Iersel van, T. (Tom) (1039) Saturday 14 February 2026 LOSS -27.7
Wilde de, J. (Joel) (1098) Saturday 14 February 2026 LOSS -23.3
Chembon, T.C. (Dhruv) (1086) Saturday 14 February 2026 WIN +29.9
Castori, L. (Leonardo) (1059) Saturday 14 February 2026 WIN +27.8