Pieter Claesen

Belgian chess player

Person human Q614599

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Pieter Claesen

Summary

Pieter Claesen is a human^[1]. He was born on +1971-03-21T00:00:00Z^[2]. He worked as a chess player^[3].

Key Facts

Pieter Claesen was born on +1971-03-21T00:00:00Z^[2].
Pieter Claesen held citizenship in Belgium^[4].
Pieter Claesen worked as a chess player^[3].
Pieter Claesen is recorded as male^[5].
Pieter Claesen's instance of is recorded as human^[6].
Pieter Claesen's sport is recorded as chess^[7].
Pieter Claesen's family name is recorded as Claesen^[8].
Pieter Claesen's given name is recorded as Pieter^[9].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2260'}^[10].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2260'}^[11].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2240'}^[12].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2240'}^[13].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2230'}^[14].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2230'}^[15].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2240'}^[16].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2240'}^[17].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2275'}^[18].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2275'}^[19].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2350'}^[20].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2390'}^[21].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2395'}^[22].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2410'}^[23].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2410'}^[24].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2415'}^[25].
Pieter Claesen's Elo rating is recorded as {'unit': '1', 'amount': '+2430'}^[26].

Body

Origins and Family

Pieter Claesen was born on +1971-03-21T00:00:00Z^[2].

Career and Affiliations

Pieter Claesen's professions included chess player^[3].

FAQs

What did Pieter Claesen do for work?

Pieter Claesen worked as chess player^[3].

⭐ Popularity Graph

2/100 established

Quick Facts

Instance of human

Sex or gender male

Date of birth March 21, 1971

Country of citizenship Belgium

Occupation chess player

Properties

Country for sport Belgium

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Family name Claesen

Given name Pieter

Imported from wholeness_audit_2026-05-02

Participant in 37th Chess Olympiad, 34th Chess Olympiad, 32nd Chess Olympiad

Sport chess

Title of chess person International Master

External References (7)

365chess.com player id Pieter_Claesen

Chess.com player id pieter-claesen

Chessgames.com player id 19850

Chesstempo.com player id 39902

Fide player id 200727

Google knowledge graph id /g/122y09gh

Olimpbase chess olympiad player id ocy0igyf

🌐 Available in 2 languages

brPieter Claesen nlPieter Claesen

🏷️ Also known as

en Pieter Claesen

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[5] ↑ Pieter Claesen — sex or gender (P21): male. wikidata.org.
[4] ↑ Pieter Claesen — country of citizenship (P27): Belgium. wikidata.org.
[6] ↑ Pieter Claesen — instance of (P31): human. wikidata.org.
[3] ↑ Pieter Claesen — occupation (P106): chess player. wikidata.org.
[2] ↑ Pieter Claesen — date of birth (P569): +1971-03-21T00:00:00Z. wikidata.org.
[7] ↑ Pieter Claesen — sport (P641): chess. wikidata.org.
[8] ↑ Pieter Claesen — family name (P734): Claesen. wikidata.org.
[9] ↑ Pieter Claesen — given name (P735): Pieter. wikidata.org.
[10] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2260'}. List of players on FIDE lists 1967-2001. wikidata.org.
[11] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2260'}. List of players on FIDE lists 1967-2001. wikidata.org.
[12] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2240'}. List of players on FIDE lists 1967-2001. wikidata.org.
[13] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2240'}. List of players on FIDE lists 1967-2001. wikidata.org.
[14] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2230'}. List of players on FIDE lists 1967-2001. wikidata.org.
[15] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2230'}. List of players on FIDE lists 1967-2001. wikidata.org.
[16] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2240'}. List of players on FIDE lists 1967-2001. wikidata.org.
[17] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2240'}. List of players on FIDE lists 1967-2001. wikidata.org.
[18] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2275'}. List of players on FIDE lists 1967-2001. wikidata.org.
[19] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2275'}. List of players on FIDE lists 1967-2001. wikidata.org.
[20] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2350'}. List of players on FIDE lists 1967-2001. wikidata.org.
[21] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2390'}. List of players on FIDE lists 1967-2001. wikidata.org.
[22] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2395'}. List of players on FIDE lists 1967-2001. wikidata.org.
[23] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2410'}. List of players on FIDE lists 1967-2001. wikidata.org.
[24] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2410'}. List of players on FIDE lists 1967-2001. wikidata.org.
[25] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2415'}. List of players on FIDE lists 1967-2001. wikidata.org.
[26] ↑ Pieter Claesen — Elo rating (P1087): {'unit': '1', 'amount': '+2430'}. List of players on FIDE lists 1967-2001. wikidata.org.

Class ancestry

[1] ↑ Pieter Claesen is an instance of human (Q5) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Pieter Claesen. Retrieved May 3, 2026, from https://4ort.xyz/entity/pieter-claesen

MLA “Pieter Claesen.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/pieter-claesen.

BibTeX

@misc{4ortxyz_pieter-claesen_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Pieter Claesen}}, year = {2026}, url = {https://4ort.xyz/entity/pieter-claesen}, note = {Accessed: 2026-05-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Pieter Claesen — https://4ort.xyz/entity/pieter-claesen (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/pieter-claesen · Last refreshed: May 3, 2026