IMRuben Gideon Koellner

GER Born 2004 (Age ≈22) Male
FIDE ID
12993093

Player overview

Ruben Gideon Koellner’s highest recorded classical FIDE rating is 2535 (October 2026). On the November 2026 FIDE list, Ruben Gideon Koellner ranks #411 worldwide and #21 in Germany among active classical players.

FIDE ratings

Classical

2521.3 -4.7

Live estimate

Rapid

2441

Published FIDE

Blitz

2377

Published FIDE

Official classical ranks

World rank
#411
National rank · GER
#21

Active players · Nov 2026 FIDE list ⓘ

Rating milestones

Highest recorded rating
2535 Oct 2026
Recorded years
2014–2026
Archived games
591

Based on available monthly lists and saved games.

Live rankings

Rating history

FIDE rating history

Published rating lists through Nov 2026.

Download chart or data

View rating lists

Games

Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-11-11 (UTC).

Online games are identified from known tournament names, playing sites and PGN mode. Other games are listed as OTB (over-the-board).

# Date Event Site Round White Black Result Moves View
51 2025-06-15 Zupanja Celebrates GM2 Zupanja CRO 8.3 Nikola Sedlak Ruben Gideon Koellner Draw: 1/2-1/2 16 Open
52 2025-06-14 Zupanja Celebrates GM2 Zupanja CRO 7.4 Ruben Gideon Koellner Dragan Kosic Won: 1-0 67 Open
53 2025-06-14 Zupanja Celebrates GM2 Zupanja CRO 6.2 Nenad Panic Ruben Gideon Koellner Draw: 1/2-1/2 43 Open
54 2025-06-13 Zupanja Celebrates GM2 Zupanja CRO 5.5 Ruben Gideon Koellner Harikrishnan.A.Ra Won: 1-0 59 Open
55 2025-06-12 Zupanja Celebrates GM2 Zupanja CRO 4.1 Aarav Dengla Ruben Gideon Koellner Draw: 1/2-1/2 58 Open
56 2025-06-12 Zupanja Celebrates GM2 Zupanja CRO 3.5 Aleksander Delchev Ruben Gideon Koellner Draw: 1/2-1/2 37 Open
57 2025-06-11 Zupanja Celebrates GM2 Zupanja CRO 2.2 Ruben Gideon Koellner Petar Kovac Draw: 1/2-1/2 39 Open
58 2025-06-10 Zupanja Celebrates GM2 Zupanja CRO 1.4 Adelard Bai Ruben Gideon Koellner Draw: 1/2-1/2 36 Open
59 2025-06-01 TCh-AUT Rapid 2025 Pasching AUT 8.17 Georg Halvax Ruben Gideon Koellner Draw: 1/2-1/2 100 Open
60 2025-06-01 TCh-AUT Rapid 2025 Pasching AUT 7.9 Ruben Gideon Koellner Viktor Erdos Lost: 0-1 44 Open
61 2025-06-01 TCh-AUT Rapid 2025 Pasching AUT 6.17 Teodora Injac Ruben Gideon Koellner Won: 0-1 50 Open
62 2025-06-01 TCh-AUT Rapid 2025 Pasching AUT 3.5 Ruben Gideon Koellner Jaime Santos Latasa Lost: 0-1 10 Open
63 2025-05-31 TCh-AUT Blitz 2025 Pasching AUT 8.15 Felix Blohberger Ruben Gideon Koellner Won: 0-1 38 Open
64 2025-05-31 TCh-AUT Blitz 2025 Pasching AUT 3.11 Eduardo Iturrizaga Bonelli Ruben Gideon Koellner Draw: 1/2-1/2 55 Open
65 2025-05-31 TCh-AUT Blitz 2025 Pasching AUT 13.3 Maxim Rodshtein Ruben Gideon Koellner Won: 0-1 51 Open
66 2025-05-31 TCh-AUT Blitz 2025 Pasching AUT 11.19 Ruben Gideon Koellner Viktor Erdos Draw: 1/2-1/2 41 Open
67 2025-05-30 Grand Prix PlusCity Rapid Pasching AUT 8.13 Pawel Teclaf Ruben Gideon Koellner Lost: 1-0 54 Open
68 2025-05-30 Grand Prix PlusCity Rapid Pasching AUT 7.4 Alexey Sarana Ruben Gideon Koellner Lost: 1-0 29 Open
69 2025-05-30 Grand Prix PlusCity Rapid Pasching AUT 6.7 Ruben Gideon Koellner Maxim Rodshtein Won: 1-0 44 Open
70 2025-05-30 Grand Prix PlusCity Rapid Pasching AUT 5.4 Ruben Gideon Koellner Aleksandr Shimanov Draw: 1/2-1/2 46 Open
71 2025-05-30 Grand Prix PlusCity Rapid Pasching AUT 4.12 Eric Hansen Ruben Gideon Koellner Won: 0-1 47 Open
72 2025-05-29 Grand Prix PlusCity Blitz Pasching AUT 8.13 Georg Meier Ruben Gideon Koellner Lost: 1-0 40 Open
73 2025-05-29 Grand Prix PlusCity Blitz Pasching AUT 6.17 Ruben Gideon Koellner Zdenko Kozul Draw: 1/2-1/2 110 Open
74 2025-05-29 Grand Prix PlusCity Blitz Pasching AUT 4.15 Ruben Gideon Koellner Nikita Petrov Lost: 0-1 30 Open
75 2025-05-29 Grand Prix PlusCity Blitz Pasching AUT 3.15 Nigel D Short Ruben Gideon Koellner Won: 0-1 39 Open
76 2025-04-27 Bundesliga 2024-25 Deggendorf GER 15.1 Aleksandar Kovacevic Ruben Gideon Koellner Draw: 1/2-1/2 15 Open
77 2025-04-26 Bundesliga 2024-25 Deggendorf GER 14.2 Ruben Gideon Koellner Theo Gungl Won: 1-0 31 Open
78 2025-04-25 Bundesliga 2024-25 Deggendorf GER 13.4 Timur Kocharin Ruben Gideon Koellner Draw: 1/2-1/2 122 Open
79 2025-04-06 TCh-AUT 2024-25 Austria AUT 11.18 Ruben Gideon Koellner Lukas Dotzer Draw: 1/2-1/2 96 Open
80 2025-04-05 TCh-AUT 2024-25 Austria AUT 10.3 Peter Balint Ruben Gideon Koellner Won: 0-1 60 Open
81 2025-04-04 TCh-AUT 2024-25 Austria AUT 9.12 Ruben Gideon Koellner Etienne Bacrot Draw: 1/2-1/2 30 Open
82 2024-11-24 Heusenstamm Schloss Open Heusenstamm GER 7.4 Ruben Gideon Koellner Kevin Haack Draw: 1/2-1/2 40 Open
83 2024-11-24 Heusenstamm Schloss Open Heusenstamm GER 6.5 Cedric Chassard Ruben Gideon Koellner Won: 0-1 29 Open
84 2024-11-23 Heusenstamm Schloss Open Heusenstamm GER 5.3 Ruben Gideon Koellner Marian Can Nothnagel Draw: 1/2-1/2 29 Open
85 2024-11-23 Heusenstamm Schloss Open Heusenstamm GER 4.8 Jonas Rempe Ruben Gideon Koellner Won: 0-1 41 Open
86 2024-11-22 Heusenstamm Schloss Open Heusenstamm GER 3.5 Ruben Gideon Koellner Uwe Kersten Draw: 1/2-1/2 30 Open
87 2024-11-22 Heusenstamm Schloss Open Heusenstamm GER 2.5 Paul Stuemer Ruben Gideon Koellner Won: 0-1 23 Open
88 2024-11-21 Heusenstamm Schloss Open Heusenstamm GER 1.5 Ruben Gideon Koellner Platon Musiienko Won: 1-0 35 Open
89 2024-10-27 Rainer Radtke Mem 2024 Berlin GER 9.3 Ruben Gideon Koellner Martin Petrov Draw: 1/2-1/2 23 Open
90 2024-10-26 Rainer Radtke Mem 2024 Berlin GER 8.2 Szymon Gumularz Ruben Gideon Koellner Draw: 1/2-1/2 25 Open
91 2024-10-25 Rainer Radtke Mem 2024 Berlin GER 7.4 Ruben Gideon Koellner Adar Tarhan Won: 1-0 59 Open
92 2024-10-24 Rainer Radtke Mem 2024 Berlin GER 6.8 Pijus Stremavicius Ruben Gideon Koellner Won: 0-1 72 Open
93 2024-10-24 Rainer Radtke Mem 2024 Berlin GER 5.12 Ruben Gideon Koellner Daniel Prazak Won: 1-0 41 Open
94 2024-10-23 Rainer Radtke Mem 2024 Berlin GER 4.21 Christian Polster Ruben Gideon Koellner Won: 0-1 34 Open
95 2024-10-22 Rainer Radtke Mem 2024 Berlin GER 3.19 Ruben Gideon Koellner Uri Shefer Draw: 1/2-1/2 75 Open
96 2024-10-21 Rainer Radtke Mem 2024 Berlin GER 1.8 Ruben Gideon Koellner Bao Anh Le Bui Lost: 0-1 28 Open
97 2024-10-13 TCh-AUT 2024-25 Austria AUT 5.3 Ruben Gideon Koellner Viktor Erdos Draw: 1/2-1/2 39 Open
98 2024-10-12 TCh-AUT 2024-25 Austria AUT 4.3 Jonas Hacker Ruben Gideon Koellner Draw: 1/2-1/2 31 Open
99 2024-10-11 TCh-AUT 2024-25 Austria AUT 3.3 Ruben Gideon Koellner Ihor Samunenkov Draw: 1/2-1/2 47 Open
100 2024-10-10 TCh-AUT 2024-25 Austria AUT 2.3 Alexander Naumann Ruben Gideon Koellner Draw: 1/2-1/2 31 Open
  1. vs Nikola SedlakDraw · ½–½Black · 2025-06-15 · Round 8.3Zupanja Celebrates GM2
  2. vs Dragan KosicWon · 1-0White · 2025-06-14 · Round 7.4Zupanja Celebrates GM2
  3. vs Nenad PanicDraw · ½–½Black · 2025-06-14 · Round 6.2Zupanja Celebrates GM2
  4. vs Harikrishnan.A.RaWon · 1-0White · 2025-06-13 · Round 5.5Zupanja Celebrates GM2
  5. vs Aarav DenglaDraw · ½–½Black · 2025-06-12 · Round 4.1Zupanja Celebrates GM2
  6. vs Aleksander DelchevDraw · ½–½Black · 2025-06-12 · Round 3.5Zupanja Celebrates GM2
  7. vs Petar KovacDraw · ½–½White · 2025-06-11 · Round 2.2Zupanja Celebrates GM2
  8. vs Adelard BaiDraw · ½–½Black · 2025-06-10 · Round 1.4Zupanja Celebrates GM2
  9. vs Georg HalvaxDraw · ½–½Black · 2025-06-01 · Round 8.17TCh-AUT Rapid 2025
  10. vs Viktor ErdosLost · 0-1White · 2025-06-01 · Round 7.9TCh-AUT Rapid 2025
  11. vs Teodora InjacWon · 0-1Black · 2025-06-01 · Round 6.17TCh-AUT Rapid 2025
  12. vs Jaime Santos LatasaLost · 0-1White · 2025-06-01 · Round 3.5TCh-AUT Rapid 2025
  13. vs Felix BlohbergerWon · 0-1Black · 2025-05-31 · Round 8.15TCh-AUT Blitz 2025
  14. vs Eduardo Iturrizaga BonelliDraw · ½–½Black · 2025-05-31 · Round 3.11TCh-AUT Blitz 2025
  15. vs Maxim RodshteinWon · 0-1Black · 2025-05-31 · Round 13.3TCh-AUT Blitz 2025
  16. vs Viktor ErdosDraw · ½–½White · 2025-05-31 · Round 11.19TCh-AUT Blitz 2025
  17. vs Pawel TeclafLost · 1-0Black · 2025-05-30 · Round 8.13Grand Prix PlusCity Rapid
  18. vs Alexey SaranaLost · 1-0Black · 2025-05-30 · Round 7.4Grand Prix PlusCity Rapid
  19. vs Maxim RodshteinWon · 1-0White · 2025-05-30 · Round 6.7Grand Prix PlusCity Rapid
  20. vs Aleksandr ShimanovDraw · ½–½White · 2025-05-30 · Round 5.4Grand Prix PlusCity Rapid
  21. vs Eric HansenWon · 0-1Black · 2025-05-30 · Round 4.12Grand Prix PlusCity Rapid
  22. vs Georg MeierLost · 1-0Black · 2025-05-29 · Round 8.13Grand Prix PlusCity Blitz
  23. vs Zdenko KozulDraw · ½–½White · 2025-05-29 · Round 6.17Grand Prix PlusCity Blitz
  24. vs Nikita PetrovLost · 0-1White · 2025-05-29 · Round 4.15Grand Prix PlusCity Blitz
  25. vs Nigel D ShortWon · 0-1Black · 2025-05-29 · Round 3.15Grand Prix PlusCity Blitz
  26. vs Aleksandar KovacevicDraw · ½–½Black · 2025-04-27 · Round 15.1Bundesliga 2024-25
  27. vs Theo GunglWon · 1-0White · 2025-04-26 · Round 14.2Bundesliga 2024-25
  28. vs Timur KocharinDraw · ½–½Black · 2025-04-25 · Round 13.4Bundesliga 2024-25
  29. vs Lukas DotzerDraw · ½–½White · 2025-04-06 · Round 11.18TCh-AUT 2024-25
  30. vs Peter BalintWon · 0-1Black · 2025-04-05 · Round 10.3TCh-AUT 2024-25
  31. vs Etienne BacrotDraw · ½–½White · 2025-04-04 · Round 9.12TCh-AUT 2024-25
  32. vs Kevin HaackDraw · ½–½White · 2024-11-24 · Round 7.4Heusenstamm Schloss Open
  33. vs Cedric ChassardWon · 0-1Black · 2024-11-24 · Round 6.5Heusenstamm Schloss Open
  34. vs Marian Can NothnagelDraw · ½–½White · 2024-11-23 · Round 5.3Heusenstamm Schloss Open
  35. vs Jonas RempeWon · 0-1Black · 2024-11-23 · Round 4.8Heusenstamm Schloss Open
  36. vs Uwe KerstenDraw · ½–½White · 2024-11-22 · Round 3.5Heusenstamm Schloss Open
  37. vs Paul StuemerWon · 0-1Black · 2024-11-22 · Round 2.5Heusenstamm Schloss Open
  38. vs Platon MusiienkoWon · 1-0White · 2024-11-21 · Round 1.5Heusenstamm Schloss Open
  39. vs Martin PetrovDraw · ½–½White · 2024-10-27 · Round 9.3Rainer Radtke Mem 2024
  40. vs Szymon GumularzDraw · ½–½Black · 2024-10-26 · Round 8.2Rainer Radtke Mem 2024
  41. vs Adar TarhanWon · 1-0White · 2024-10-25 · Round 7.4Rainer Radtke Mem 2024
  42. vs Pijus StremaviciusWon · 0-1Black · 2024-10-24 · Round 6.8Rainer Radtke Mem 2024
  43. vs Daniel PrazakWon · 1-0White · 2024-10-24 · Round 5.12Rainer Radtke Mem 2024
  44. vs Christian PolsterWon · 0-1Black · 2024-10-23 · Round 4.21Rainer Radtke Mem 2024
  45. vs Uri SheferDraw · ½–½White · 2024-10-22 · Round 3.19Rainer Radtke Mem 2024
  46. vs Bao Anh Le BuiLost · 0-1White · 2024-10-21 · Round 1.8Rainer Radtke Mem 2024
  47. vs Viktor ErdosDraw · ½–½White · 2024-10-13 · Round 5.3TCh-AUT 2024-25
  48. vs Jonas HackerDraw · ½–½Black · 2024-10-12 · Round 4.3TCh-AUT 2024-25
  49. vs Ihor SamunenkovDraw · ½–½White · 2024-10-11 · Round 3.3TCh-AUT 2024-25
  50. vs Alexander NaumannDraw · ½–½Black · 2024-10-10 · Round 2.3TCh-AUT 2024-25

FIDE tournaments

DateTournamentTypeScore
2026-10-204. Berlin U25-Open Rapid A-OpenRapid7½
2026-10-194. Berlin U25-Open Blitz A-OpenBlitz8
2026-10-091. Schachbundesliga 2026-2027 Oktober 2026Classical½
2026-10-04Oberliga NRW 2026-2027 Oktober 2026Classical1
2026-09-12Oberliga NRW 2026-2027 September 2026Classical1½
2026-08-15Oberbank-Challenger-Open 2026Classical7½
2026-08-0616. Nordhaeuser Schachopen MeisterturnierClassical5½

All tournament results