| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 476. H Gruenberg vs Lobron |
| ½-½ | 42 | 1991 | Hannover | A90 Dutch |
| 477. H Gruenberg vs M Bosboom |
| ½-½ | 28 | 1991 | Lippstadt | E94 King's Indian, Orthodox |
| 478. H Gruenberg vs M Schoeneberg |
| 1-0 | 41 | 1991 | Bundesliga 1991/92 | A55 Old Indian, Main line |
| 479. H Clara vs H Gruenberg |
| 0-1 | 52 | 1991 | Bundesliga 1990/91 | E92 King's Indian |
| 480. S Mohr vs H Gruenberg |
| 1-0 | 44 | 1991 | Bad Lauterberg | E32 Nimzo-Indian, Classical |
| 481. D Gurevich vs H Gruenberg |
| 0-1 | 58 | 1991 | New York Open | E99 King's Indian, Orthodox, Taimanov |
| 482. Kudrin vs H Gruenberg |
| 1-0 | 37 | 1991 | New York Open | B80 Sicilian, Scheveningen |
| 483. H Gruenberg vs Lautier |
| 0-1 | 43 | 1991 | New York Open | E15 Queen's Indian |
| 484. H Gruenberg vs G Gratz |
| 1-0 | 53 | 1991 | New York Open | D31 Queen's Gambit Declined |
| 485. Dlugy vs H Gruenberg |
| ½-½ | 19 | 1991 | New York Open | E81 King's Indian, Samisch |
| 486. H Gruenberg vs A Fernandes |
| 1-0 | 24 | 1991 | New York Open | E97 King's Indian |
| 487. H Olafsson vs H Gruenberg |
| ½-½ | 20 | 1991 | New York Open | E77 King's Indian |
| 488. H Gruenberg vs A Lein |
| 1-0 | 31 | 1991 | New York Open | D86 Grunfeld, Exchange |
| 489. S Polgar vs H Gruenberg |
| ½-½ | 14 | 1991 | Budapest Kasparov | B56 Sicilian |
| 490. H Gruenberg vs Hort |
 | 1-0 | 60 | 1992 | Bundesliga 1991/92 | D20 Queen's Gambit Accepted |
| 491. H Gruenberg vs R Stern |
| ½-½ | 43 | 1992 | Bundesliga 1992/93 | D45 Queen's Gambit Declined Semi-Slav |
| 492. C Kamp vs H Gruenberg |
| 1-0 | 38 | 1993 | BL2-W 9394 | E94 King's Indian, Orthodox |
| 493. H Gruenberg vs Vaganian |
| 0-1 | 39 | 1994 | Bundesliga 1994/95 | D58 Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) Syst |
| 494. W Schmidt vs H Gruenberg |
| 1-0 | 29 | 1996 | Oberliga Bayern 9697 | D17 Queen's Gambit Declined Slav |
| 495. H Gruenberg vs V Beim |
| ½-½ | 19 | 1997 | Oberliga Bayern 9798 | D43 Queen's Gambit Declined Semi-Slav |
| 496. K Darga vs H Gruenberg |
| 1-0 | 41 | 1998 | Bodensee-Cup 4th | E81 King's Indian, Samisch |
| 497. H Gruenberg vs G Beikert |
| 1-0 | 43 | 1998 | Bodensee-Cup 4th | D49 Queen's Gambit Declined Semi-Slav, Meran |
| 498. P Haba vs H Gruenberg |
| ½-½ | 41 | 1999 | AUT-chT2M 1999/00 | A62 Benoni, Fianchetto Variation |
| 499. H Gruenberg vs R Wukits |
| 0-1 | 38 | 1999 | AUT-chT2M 9899 | D61 Queen's Gambit Declined, Orthodox, Rubinstein Attack |
| 500. H Gruenberg vs C Gabriel |
| 0-1 | 31 | 1999 | BL2-Sued 9900 | E10 Queen's Pawn Game |
Kibitzing
