| 1226 | Pires - Koslowski | 1/2-1/2 | (chess) | rated |
| 1231 | Koslowski - Rakovic | 1-0 | (chess) | rated |
| 1235 | Schwarz - Koslowski | 0-1 | (chess) | rated |
| 1239 | Koslowski - Fioravanti | 1-0 | (chess) | rated |
| 1240 | Marín Millán - Koslowski | 1/2-1/2 | (chess) | rated |
| 1241 | Koslowski - Marconi | 1-0 | (chess) | rated |
| 1665 | Lenz - Koslowski | 1/2-1/2 | (chess) | rated |
| 1671 | Koslowski - Ghisi | 1-0 | (chess) | rated |
| 1672 | Vidanovic - Koslowski | 1-0 | (chess) | rated |
| 1673 | Koslowski - Mazza | 1-0 | (chess) | rated |
| 1674 | Durnez - Koslowski | 0-1 | (chess) | rated |
| 1675 | Koslowski - Trukov | 1-0 | (chess) | rated |
| 4102 | Stibal - Koslowski | 0-1 | (chess) | rated |
| 4108 | Koslowski - Kukula | 1/2-1/2 | (chess) | rated |
| 4109 | Pagano - Koslowski | 0-1 | (chess) | rated |
| 4110 | Koslowski - Steveson | 1-0 | (chess) | rated |
| 4111 | Godat - Koslowski | 1/2-1/2 | (chess) | rated |
| 4112 | Koslowski - Speisser | 1/2-1/2 | (chess) | rated |
| 4633 | Caire - Koslowski | 1-0 | (chess) | unrated |
| 4638 | Koslowski - Vasquez | 1/2-1/2 | (chess) | unrated |
| 4642 | Mo - Koslowski | 0-1 | (chess) | unrated |
| 4645 | Koslowski - Laneval | 1-0 | (chess) | unrated |
| 4647 | Cirulis - Koslowski | 1/2-1/2 | (chess) | unrated |
| 4649 | Koslowski - Hrubaru | 1-0 | (chess) | unrated |
| 4760 | Koslowski - Caburro | 1-0 | (chess_960) | unrated |
| 4765 | Castro - Koslowski | 0-1 | (chess_960) | unrated |
| 4769 | Koslowski - van Speybroeck | 1/2-1/2 | (chess_960) | unrated |
| 4772 | Vasquez - Koslowski | 0-1 | (chess_960) | unrated |
| 4774 | Koslowski - Cirulis | 1-0 | (chess_960) | unrated |
| 4775 | Vasquez - Koslowski | 1-0 | (chess_960) | unrated |
| 5114 | de Vassal - Koslowski | 1-0 | (big_chess) | unrated |
| 5119 | Koslowski - Lehnhoff | 0-1 | (big_chess) | unrated |
| 5123 | Cirulis - Koslowski | 0-1 | (big_chess) | unrated |
| 5127 | Koslowski - Jankovic | 1-0 | (big_chess) | unrated |
| 5128 | Melquiades - Koslowski | 0-1 | (big_chess) | unrated |
| 5129 | Koslowski - Dhumbumroong | 1-0 | (big_chess) | unrated |
| 7666 | Haluschka - Koslowski | 1/2-1/2 | (chess) | rated |
| 7671 | Koslowski - Riha | 1-0 | (chess) | rated |
| 7675 | Lubson - Koslowski | 0-1 | (chess) | rated |
| 7679 | Koslowski - Czekaj | 1/2-1/2 | (chess) | rated |
| 7680 | Porkolab - Koslowski | 1/2-1/2 | (chess) | rated |
| 7681 | Koslowski - Kuuse | 1-0 | (chess) | rated |
| 8251 | Gaffagan - Koslowski | 0-1 | (chess) | rated |
| 8256 | Koslowski - De Silva | 1-0 | (chess) | rated |
| 8260 | Porkolab - Koslowski | 1/2-1/2 | (chess) | rated |
| 8263 | Koslowski - Markus | 1/2-1/2 | (chess) | rated |
| 8265 | Kesselheim - Koslowski | 1-0 | (chess) | rated |
| 8267 | Koslowski - Lehnhoff | 1/2-1/2 | (chess) | rated |
| 10984 | Koslowski - Yeke | 1-0 | (chess) | rated |
| 10985 | Pires - Koslowski | 0-1 | (chess) | rated |
| 10986 | Koslowski - De Silva | 1/2-1/2 | (chess) | rated |
| 10987 | Noble - Koslowski | 1/2-1/2 | (chess) | rated |
| 10988 | Koslowski - Ghysens | 1/2-1/2 | (chess) | rated |
| 10989 | Lehnhoff - Koslowski | 1/2-1/2 | (chess) | rated |
| 11009 | Litzenburger - Koslowski | 0-1 | (chess_960) | unrated |
| 11014 | Koslowski - Wosch | 1-0 | (chess_960) | unrated |
| 11018 | Ionescu - Koslowski | 0-1 | (chess_960) | unrated |
| 11021 | Koslowski - Richardson | 1-0 | (chess_960) | unrated |
| 11023 | Noble - Koslowski | 0-1 | (chess_960) | unrated |
| 11025 | Koslowski - Lorena | 1-0 | (chess_960) | unrated |
| 11071 | Koslowski - Yeke | 1-0 | (chess) | rated |
| 11076 | Pires - Koslowski | 1-0 | (chess) | rated |
| 11080 | Koslowski - De Silva | 1/2-1/2 | (chess) | rated |
| 11083 | Noble - Koslowski | 1/2-1/2 | (chess) | rated |
| 11086 | Koslowski - Lehnhoff | 1/2-1/2 | (chess) | rated |
| 11087 | Ghysens - Koslowski | 1/2-1/2 | (chess) | rated |
| 12554 | Koslowski - Kotlyanskiy | 1/2-1/2 | (chess) | rated |
| 12555 | Skwarczylo - Koslowski | 1/2-1/2 | (chess) | rated |
| 12556 | Koslowski - Yuvarlak | 1-0 | (chess) | rated |
| 12557 | Castillo - Koslowski | 1/2-1/2 | (chess) | rated |
| 12558 | Koslowski - Oliveira | 1-0 | (chess) | rated |
| 12559 | Szabo - Koslowski | 0-1 | (chess) | rated |
| 12560 | Koslowski - Woodcock | 1-0 | (chess) | rated |
| 12561 | Stoyanov - Koslowski | 0-1 | (chess) | rated |
| 15051 | Repa - Koslowski | 1/2-1/2 | (chess) | rated |
| 15056 | Koslowski - Porkolab | 1-0 | (chess) | rated |
| 15060 | Oortwijn - Koslowski | 1/2-1/2 | (chess) | rated |
| 15064 | Koslowski - Kuhne | 0-1 | (chess) | rated |
| 15065 | Domingo - Koslowski | 1/2-1/2 | (chess) | rated |
| 15066 | Koslowski - Lehnhoff | 1/2-1/2 | (chess) | rated |
| 15281 | Koslowski - Lehnhoff | 1/2-1/2 | (chess) | rated |
| 15282 | Lehnhoff - Koslowski | 1-0 | (chess) | rated |
| 18772 | Willoughby - Koslowski | 0-1 | (big_chess) | rated |
| 18778 | Koslowski - Orlov | 1-0 | (big_chess) | rated |
| 18779 | Nyman - Koslowski | 0-1 | (big_chess) | rated |
| 18780 | Koslowski - Romaniuk | 1-0 | (big_chess) | rated |
| 18781 | Lorena - Koslowski | 0-1 | (big_chess) | rated |
| 18782 | Koslowski - Lehnhoff | 0-1 | (big_chess) | rated |
| 19432 | Koslowski - Willoughby | * | (big_chess) | rated |
| 19437 | Orden - Koslowski | 0-1 | (big_chess) | rated |
| 19442 | Koslowski - Menzies | 1-0 | (big_chess) | rated |
| 19443 | Podogov - Koslowski | 0-1 | (big_chess) | rated |
| 19444 | Koslowski - Lehnhoff | 0-1 | (big_chess) | rated |
| 19445 | König - Koslowski | 0-1 | (big_chess) | rated |
| 19971 | Koslowski - Fioravanti | 1-0 | (big_chess) | rated |
| 19976 | Marcel - Koslowski | 0-1 | (big_chess) | rated |
| 19980 | Koslowski - Beni | 1-0 | (big_chess) | rated |
| 19983 | Taylor - Koslowski | 1-0 | (big_chess) | rated |
| 19985 | Koslowski - Madsen | 1-0 | (big_chess) | rated |
| 19986 | Lehnhoff - Koslowski | 1-0 | (big_chess) | rated |
| 19989 | Repa - Koslowski | * | (chess) | rated |
| 19994 | Koslowski - Lowrance | 1/2-1/2 | (chess) | rated |
| 19998 | Bellmann - Koslowski | 0-1 | (chess) | rated |
| 20002 | Koslowski - Domingo | * | (chess) | rated |
| 20003 | Garcia - Koslowski | * | (chess) | rated |
| 20004 | Koslowski - Lehnhoff | * | (chess) | rated |
| 23243 | Koslowski - Bezemer | * | (chess) | rated |
| 23248 | Kuhne - Koslowski | * | (chess) | rated |
| 23252 | Koslowski - Tomov | * | (chess) | rated |
| 23255 | Lehnhoff - Koslowski | * | (chess) | rated |
| 23257 | Koslowski - Stephenson | * | (chess) | rated |
| 23258 | Yarkov - Koslowski | * | (chess) | rated |
| 24656 | Koslowski - de Vassal | * | (big_chess) | rated |
| 24661 | Lehnhoff - Koslowski | * | (big_chess) | rated |
| 24665 | Koslowski - Noble | * | (big_chess) | rated |
| 24668 | Collette - Koslowski | * | (big_chess) | rated |
| 24671 | Koslowski - Ould Ahmed | 1-0 | (big_chess) | rated |
| 24672 | Taylor - Koslowski | * | (big_chess) | rated |
| 26174 | Oliveira - Koslowski | * | (poker_holdem) | rated |
| 26180 | Koslowski - Gray | * | (poker_holdem) | rated |
| 26181 | van der Kemp - Koslowski | * | (poker_holdem) | rated |
| 26182 | Koslowski - Boehme | * | (poker_holdem) | rated |
| 26183 | Halatre - Koslowski | * | (poker_holdem) | rated |
| 26184 | Koslowski - Block | * | (poker_holdem) | rated |
| 26199 | Koslowski - de Vassal | * | (poker_holdem) | rated |
| 26204 | Sharland - Koslowski | * | (poker_holdem) | rated |
| 26208 | Koslowski - Boehme | * | (poker_holdem) | rated |
| 26211 | van der Kemp - Koslowski | * | (poker_holdem) | rated |
| 26214 | Koslowski - Legrand | * | (poker_holdem) | rated |
| 26215 | Halatre - Koslowski | * | (poker_holdem) | rated |
| 26218 | Koslowski - van der Kemp | * | (poker_holdem) | rated |
| 26223 | Block - Koslowski | * | (poker_holdem) | rated |
| 26228 | Koslowski - Sharland | * | (poker_holdem) | rated |
| 26229 | Legrand - Koslowski | * | (poker_holdem) | rated |
| 26230 | Koslowski - Cook | * | (poker_holdem) | rated |
| 26231 | Gramajo - Koslowski | * | (poker_holdem) | rated |