Games played by Ingomar Mattheus
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Mattheus, I | Josuttis, V | ½-½  |
49 | B00 | 1999 | Pinneberg-ch op |
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| Petersen, C | Mattheus, I | 0-1 |
49 | B33 | 1999 | Pinneberg-ch op |
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| Fridman, D | 2480 | Mattheus, I | 1-0 |
24 | A09 | 1997 | Wichern op 4th |
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| Kuehn, S | 2295 | Mattheus, I | ½-½ |
55 | B33 | 1997 | Wichern op 4th |
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| Harms, P | Mattheus, I | 0-1 |
51 | A09 | 1997 | Wichern op 4th |
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| Hawellek, J | 2195 | Mattheus, I | 1-0 |
37 | B22 | 1997 | Wichern op 4th |
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| Mattheus, I | Fahimi, M | 2215 | ½-½ |
39 | B14 | 1997 | Wichern op 4th |
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| Mattheus, I | Bohnstorff, M | 2165 | ½-½ |
27 | B06 | 1997 | Wichern op 4th |
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| Mattheus, I | Trabert, B | 2220 | 0-1 |
22 | C50 | 1997 | Wichern op 4th |
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| Mattheus, I | Bohn, C | 1-0 |
26 | B14 | 1997 | Wichern op 4th |
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| Mattheus, I | Panchenko, A | 2480 | 0-1 |
27 | B05 | 1995 | Wichern op 3rd |
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| Mattheus, I | Heilemann, M | 2285 | 0-1 |
35 | C50 | 1993 | Wichern op 2nd |
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