Thierry Siecker

Rated since January 2023

1729 Classic

1735 Rapid

1735 Blitz

RIVALRY

Not enough games to determine rivalries yet.

The good & the bad

Best wins

HULST VAN, J. (JARO) 1726

12776 SOS competitie 2025/2026 Lijst 1 apr · Friday 13 March 2026

BAKKER, H.J.T.F. (HANS) 1724

9650 SOS Competitie 2024/2025 2025-01 · Tuesday 14 January 2025

IBRAHIMY, F.F. (FEREYDOUN) 1653

12051 SOS competitie 2025/2026 Lijst 1 Nov · Tuesday 30 September 2025

DRIEL VAN, R.J. (ROB) 1626

9654 SOS Competitie 2024/2025 2025-05 · Tuesday 20 May 2025

OORT VAN, J. (JAN) 1616

12775 SOS competitie 2025/2026 Lijst 1 mrt · Tuesday 3 February 2026

Worst losses

VOGEL DE, I.J.M. (ISAÏ) 1563

9647 SOS Competitie 2024/2025 2024-10 · Tuesday 24 September 2024

PEL VAN, J. (JOHAN) 1581

6027 SGS Viertallencompetitie Apr 2023 · Friday 31 March 2023

LEEUWEN VAN, M. (RIES) 1657

8100 SOS Competitie 2023/2024 Maart 2024 · Tuesday 12 March 2024

ROGGEBAND, J.W. (JENS) 1726

12052 SOS competitie 2025/2026 Lijst 1 Dec · Tuesday 4 November 2025

No FIDE-rated tournaments found.

SOS competitie 2025/2026 Lijst 1 mei Monday 1 September 2025 +0–0=1 -5.9

SOS competitie 2025/2026 Lijst 1 apr Monday 1 September 2025 +2–0=0 +25.3

SOS competitie 2025/2026 Lijst 1 mrt Monday 1 September 2025 +1–0=0 +9.2

SOS competitie 2025/2026 Lijst 1 jan Monday 1 September 2025 +1–0=0

SOS competitie 2025/2026 Lijst 1 Dec Monday 1 September 2025 +0–1=0 -12.5

SOS competitie 2025/2026 Lijst 1 Nov Monday 1 September 2025 +1–0=0 +10.4

SOS Competitie 2024/2025 2025-05 Sunday 1 September 2024 +1–0=0 +9.8

SOS Competitie 2024/2025 2025-04 Sunday 1 September 2024 +1–0=0 +6.2

SOS Competitie 2024/2025 2025-01 Sunday 1 September 2024 +1–0=0 +13.9

SOS Competitie 2024/2025 2024-12 Sunday 1 September 2024 +1–0=0 +10.2

SOS Competitie 2024/2025 2024-10 Sunday 1 September 2024 +1–1=0 -16.9

SOS Competitie 2023/2024 Mei 2024 Friday 1 September 2023 +1–0=0 +8.2

SOS Competitie 2023/2024 Maart 2024 Friday 1 September 2023 +0–1=0 -13.9

SOS Competitie 2023/2024 Februari 2024 Friday 1 September 2023 +1–0=0 +9.4

SOS Competitie 2023/2024 Oktober 2023 Friday 1 September 2023 +1–0=0 +8.3

SGS Viertallencompetitie Mei 2023 Monday 24 October 2022 +0–0=1 -5.3

SGS Viertallencompetitie Apr 2023 Monday 24 October 2022 +0–1=0 -9.5

SGS Viertallencompetitie Feb 2023 Monday 24 October 2022 +1–1=0 +4.3

Rating History

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Peak Ratings

Classic 1735 April 1, 2026

Rapid 1735 May 1, 2026

Blitz 1735 May 1, 2026

Games

Wins 14

Losses 5

Draws 2

Win Rate 67%

Performance by Color

Color	Wins	Draws	Losses	Win Rate
White	5	1	2	62%
Black	9	1	3	69%

Recent Matches

Graaf de, C.N. (Kees) (1555) Tuesday 14 April 2026 DRAW -5.9

Hulst van, J. (Jaro) (1726) Friday 13 March 2026 WIN +12.6

Oort van, J. (Jan) (1616) Tuesday 3 February 2026 WIN +9.2

Pelsink, M. (Maurice) Tuesday 25 November 2025 WIN

Roggeband, J.W. (Jens) (1726) Tuesday 4 November 2025 LOSS -12.5

Ibrahimy, F.F. (Fereydoun) (1653) Tuesday 30 September 2025 WIN +10.4

Driel van, R.J. (Rob) (1626) Tuesday 20 May 2025 WIN +9.8

Schildwacht, P. (Peter) (1505) Tuesday 1 April 2025 WIN +6.2

Bakker, H.J.T.F. (Hans) (1724) Tuesday 14 January 2025 WIN +13.9

Houten van, D.E. (Diederik) (1609) Tuesday 10 December 2024 WIN +10.2

Vos de, J.G. (Johan) Tuesday 15 October 2024 WIN

Vogel de, I.J.M. (Isaï) (1563) Tuesday 24 September 2024 LOSS -16.9

Grooten, H. (Huub) (1557) Tuesday 21 May 2024 WIN +8.2

Leeuwen van, M. (Ries) (1657) Tuesday 12 March 2024 LOSS -13.9

Schildwacht, P. (Peter) (1398) Tuesday 13 February 2024 WIN +9.4

Weerd de, H.A.C. (Bert) (1357) Tuesday 10 October 2023 WIN +8.3

Selders, J.J. (Joop) (1325) Tuesday 9 May 2023 DRAW -5.3

Pel van, J. (Johan) (1581) Friday 31 March 2023 LOSS -9.5

Gauw, R. (Radboud) (1219) Tuesday 7 February 2023 WIN +4.3