KNSB FIDE

Lucas Gortemaker

Rated since January 2023

1954 Classic

2084 Rapid

2042 Blitz

RIVALRY

Nemesis

Lubben van der, A. (Arno)

Games: 3 · Win rate: 33%

Kryptonite

Schouten, H. (Henk)

Games: 3 · Win rate: 0%

The good & the bad

Best wins

RAGNARSSON, DAGUR (IM) 2337

Reykjavik Open 2024 · Monday 18 March 2024

BAKIJA, A. (ALAN) 2266

11107 RSB Competitie 2024-2025 8-tallen april · Monday 14 April 2025

ARNOLD, R.N.R. (RHYS) 2219

8250 16e BPB Limburg Open 2024 Groep A · Saturday 18 May 2024

TERLOUW, W. (WOUTER) (CM) 2216

10353 Open Dordrecht Rapidtoernooi Groep A · Saturday 1 March 2025

SCHILSTRA, L. (LAURENS) 2203

8281 Tata Steel Chess Tournament 2025 Tienkampen · Sunday 26 January 2025

Worst losses

PRAGNYA H G (WFM) 1612

PRAGUE OPEN 2023 A - IM open · Saturday 7 January 2023

VEEN VAN, W. (WOUT) 1823

13528 KNSB competitie 2025-2026 Klasse 4 ronde 9 · Saturday 11 April 2026

BERG VAN DEN, J. (JAAP) 1891

12593 KNSB competitie 2025-2026 Klasse 4 ronde 5 · Saturday 13 December 2025

FRIESEN, P.R. (PHILIPPE) 1904

7489 Chessable Open NK 2023 Reserve A · Tuesday 25 July 2023

STERRENBURG, K. (KEES) 1905

6419 Tata Steel Chess Tournament 2023 Dagvierkampen · Tuesday 17 January 2023

Tata Steel Chess Tournament 2026 Tienkampen Friday 16 January 2026 +2–12=4 -77.3

Chessfestival Groningen Compact Groep A Friday 26 December 2025 +0–1=2 -25.3

Hoogeveen Schaaktoernooi Ochtend Saturday 18 October 2025 +4–1=2 +15.6

HSG Open 2025 Groep A Friday 20 June 2025 +1–4=1 -43.4

17e BPB Limburg Open 2025 Groep B Friday 6 June 2025 +4–1=2 +12.1

50e Open Kampioenschap van Utrecht Groep A Friday 30 May 2025 +2–1=2 -7.3

Open Dordrecht Rapidtoernooi Groep A Saturday 1 March 2025 +4–3=0 +9.7

Tata Steel Chess Tournament 2025 Tienkampen Friday 17 January 2025 +3–3=3 +23.5

Hoogeveen Schaaktoernooi Open Groep Saturday 26 October 2024 +1–7=0 -77.2

16e BPB Limburg Open 2024 Groep A Friday 17 May 2024 +2–2=2 +31.7

Tata Steel Chess Tournament 2024 Tienkampen Friday 12 January 2024 +1–2=3 -8.0

Chess Festival Groningen Compact A Thursday 21 December 2023 +1–2=1 -15.5

Hoogeveen 2023 Ochtendgroep Groep A Saturday 21 October 2023 +4–1=1 +5.3

Chessable Open NK 2023 Reserve A Monday 24 July 2023 +4–1=4 -3.7

HSG Open 2023 Groep A Friday 23 June 2023 +3–2=1 -5.5

15e BPB Limburg Open 2023 Groep B Friday 26 May 2023 +3–1=3 +1.6

Tata Steel Chess Tournament 2023 Dagvierkampen Friday 13 January 2023 +1–2=0 -15.1

KNSB competitie 2025-2026 Klasse 4 ronde 9 Saturday 20 September 2025 +0–1=0 -17.5

KNSB competitie 2025-2026 Klasse 3 ronde 6 Saturday 20 September 2025 +0–0=1 +1.4

KNSB competitie 2025-2026 Klasse 4 ronde 8 Saturday 20 September 2025 +0–1=0 -13.9

KNSB competitie 2025-2026 Klasse 4 ronde 7 Saturday 20 September 2025 +0–2=0 -23.2

KNSB competitie 2025-2026 Klasse 4 ronde 5 Saturday 20 September 2025 +0–1=0 -18.3

KNSB competitie 2025-2026 Klasse 4 Ronde 4 Saturday 20 September 2025 +0–1=0 -11.6

KNSB competitie 2025-2026 Klasse 3 ronde 3 Saturday 20 September 2025 +1–0=0 +8.2

KNSB competitie 2025-2026 KNSB Beker ronde 1 voor november rating Saturday 20 September 2025 +0–0=1 +1.8

KNSB competitie 2025-2026 Klasse 4 ronde 2 Saturday 20 September 2025 +0–1=0 -8.3

RSB Competitie 2025-2026 Achttallen april Monday 1 September 2025 +0–0=1 -2.4

RSB Competitie 2025-2026 Achttallen maart Monday 1 September 2025 +0–0=1 +1.5

RSB Competitie 2025-2026 Beker ronde 3 Monday 1 September 2025 +2–0=0 +17.4

RSB Competitie 2025-2026 Beker ronde 2 Monday 1 September 2025 +0–0=1 -4.9

RSB Competitie 2025-2026 Achtallen december Monday 1 September 2025 +1–0=0 +7.8

RSB Competitie 2025-2026 Achtallen november Monday 1 September 2025 +1–0=0 +10.5

RSB Competitie 2025-2026 Beker ronde 1 Monday 1 September 2025 +1–0=0 +9.1

Erasmus Watertorentoernooi Groep A Ronde 7 Monday 7 April 2025 +1–0=0 +13.6

Erasmus Watertorentoernooi Groep A Ronde 3 t/m 6 Monday 7 April 2025 +3–0=1 +10.4

Erasmus Watertorentoernooi Groep A Monday 7 April 2025 +0–0=1 -8.8

84e Noteboomtoernooi Groep A Friday 21 February 2025 +1–3=2 -14.0

KNSB competitie 2024-2025 Klasse 2 ronde 9 Saturday 21 September 2024 +0–1=0 -10.1

KNSB competitie 2024-2025 Klasse 2 ronde 7 Saturday 21 September 2024 +1–0=0 +15.3

KNSB competitie 2024-2025 Klasse 2 ronde 6 Saturday 21 September 2024 +0–1=0 -12.7

KNSB competitie 2024-2025 KNSB Beker ronde 3 voor februarilijst Saturday 21 September 2024 +0–0=1 -0.2

KNSB competitie 2024-2025 Klasse 2 ronde 4 Saturday 21 September 2024 +1–0=0 +14.2

KNSB competitie 2024-2025 Klasse 2 ronde 3 Saturday 21 September 2024 +0–0=1 -2.2

KNSB competitie 2024-2025 Klasse 2 ronde 2 Saturday 21 September 2024 +0–0=1 +6.1

KNSB competitie 2024-2025 Klasse 2 ronde 1 Saturday 21 September 2024 +1–0=0 +10.6

RSB Competitie 2024-2025 8-tallen mei Sunday 1 September 2024 +0–1=0 -7.3

RSB Competitie 2024-2025 8-tallen april Sunday 1 September 2024 +1–0=0 +19.0

RSB Competitie 2024-2025 8-tallen maart Sunday 1 September 2024 +0–0=1 +1.4

RSB Competitie 2024-2025 8-tallen februari Sunday 1 September 2024 +0–0=1 -0.2

RSB Competitie 2024-2025 8-tallen december Sunday 1 September 2024 +1–0=0 +8.5

RSB Competitie 2024-2025 8-tallen oktober Sunday 1 September 2024 +0–1=1 -3.6

Open NK Schaken 2024 Open NK Schaken 2024 Monday 22 July 2024 +2–5=2 -36.1

Reykjavik Open 2024 Friday 15 March 2024 +4–3=1 +38.5

Graz Open 2024 - A Saturday 17 February 2024 +2–3=4 -1.9

Open Leuven 2023 Thursday 9 November 2023 +3–1=2 +23.0

KNSB competitie 2023-2024 Klasse 3 ronde 9 Saturday 16 September 2023 +0–0=1 +0.3

KNSB competitie 2023-2024 Klasse 3 ronde 8 Saturday 16 September 2023 +1–0=0 +6.4

KNSB competitie 2023-2024 Klasse 3 ronde 7 Saturday 16 September 2023 +0–0=1 -3.6

KNSB competitie 2023-2024 Klasse 3 ronde 6 Saturday 16 September 2023 +0–0=1 +0.2

KNSB competitie 2023-2024 Klasse 3 ronde 5 Saturday 16 September 2023 +1–0=0 +8.4

KNSB competitie 2023-2024 Klasse 3 ronde 4 Saturday 16 September 2023 +1–0=0 +8.5

KNSB competitie 2023-2024 Klasse 3 ronde 3 Saturday 16 September 2023 +1–0=0 +1.3

KNSB competitie 2023-2024 Klasse 3 ronde 2 Saturday 16 September 2023 +0–0=1 -9.2

KNSB competitie 2023-2024 Klasse 3 ronde 1 Saturday 16 September 2023 +1–0=0 +2.6

RSB Competitie 2023-2024 8-tallen april Friday 1 September 2023 +1–0=0 +14.8

38ste Internationaal Open van Geraardsbergen 2023 Sunday 6 August 2023 +4–1=2 +9.5

Wachtebeke Winter Round Robin 2023 Group C Saturday 18 February 2023 +5–2=2 +26.4

PRAGUE OPEN 2023 A - IM open Friday 6 January 2023 +5–4=0 -14.7

Chess Festival Groningen Open B Wednesday 21 December 2022 +5–0=2 +53.6

Open Leuven 2022 Thursday 10 November 2022 +3–2=0 +6.6

KNSB competitie 2022-2023 Klasse 3 ronde 8 Saturday 17 September 2022 +0–0=1 -1.9

RSB Competitie 2022-2023 8-tallen mei Thursday 1 September 2022 +1–0=0 +11.6

Rating History

Loading rating history...

Peak Ratings

Classic 2130 June 1, 2024

Rapid 2084 June 1, 2025

Blitz 2042 March 1, 2026

Games

Wins 96

Losses 81

Draws 66

Win Rate 40%

Performance by Color

Color	Wins	Draws	Losses	Win Rate
White	52	32	37	43%
Black	44	34	44	36%

Recent Matches

Jager de, L. (Leo) (1906) Monday 20 April 2026 DRAW -2.4

Veen van, W. (Wout) (1823) Saturday 11 April 2026 LOSS -17.5

Kate ten, G. (Gustav) (2024) Saturday 28 March 2026 DRAW +1.4

Moerkerken, R. (Remko) (1945) Saturday 7 March 2026 LOSS -13.9

Looijmans, K.N.H. (Karel) (2070) Friday 27 February 2026 DRAW +1.5

Kroes, M. (Michael) (1915) Saturday 7 February 2026 WIN +8.7

Schouten, H. (Henk) (2053) Saturday 7 February 2026 LOSS -11.6

Kroes, M. (Michael) (1915) Saturday 7 February 2026 WIN +8.7

Schouten, H. (Henk) (2053) Saturday 7 February 2026 LOSS -11.6

Manukonda Arun (2081) Sunday 1 February 2026 LOSS -11.5

Bulthuis, J. (Jelle) (2151) Saturday 31 January 2026 DRAW +3.4

Bik, W.J.A. (Wouter) (2104) Friday 30 January 2026 LOSS -10.7

FM Wunnink, M.F. (Michael) (2202) Wednesday 28 January 2026 DRAW +5.0

FM Spaan, M.T. (Tigran) (2056) Tuesday 27 January 2026 LOSS -12.4

Heijer den, C.A. (Rolinde) (2136) Monday 26 January 2026 WIN +15.4