| New York 1887 (4) |
Columbia Chess Club Championship |
5 | / | 7 |
| | | |
| Newark 1888 (1) |
Columbia Club - Newark Club Match |
| | | | | | |
|
Koehler, G.H. - Keyes, R.B. |
1 - 0 |
| | | |
| New York 1888 (2) |
Columbia Club - Newark Club Match |
| | | | | | |
|
Koehler, G.H. - Keyes, R.B. |
1 - 0 |
| | | |
| New York 1888 (3) |
Manhattan Club - Columbia Club Match (Round 1) |
| | | | | | |
|
Koehler, G.H. - Baird, D.G. |
0.5 - 0.5 |
| | | |
| New York 1888 (4) |
Manhattan Club - Columbia Club Match (Round 2) |
| | | | | | |
|
Koehler, G.H. - Baird, D.G. |
0 - 1 |
| | | |
| New York 1889 (1) |
11th New York State Championship |
| | | | | | |
|
Koehler, G.H. - Stein, R. |
0 - 1 |
| | | |
|
Koehler, G.H. - Todd, J.H. |
1 - 0 |
| | | |
|
Koehler, G.H. - Rogers, H.J. |
1 - 0 |
| | | |
|
Koehler, G.H. - Delmar, E. (1) |
0 - 1 |
| | | |
| New York 1896 (2) |
18th New York State Chess Association Midwinter Meeting - Championship |
2 | / | 4 |
| | | |
| New York 1897 (3) |
19th New York State Chess Association Meeting - Championship |
2.5 | / | 4 |
| | | |
| New York 1897 (7) |
Cosmopolitan Club Championship |
11.5 | / | 14 |
| | | |
| New York 1898 (1) |
20th New York State Chess Association Midwinter Meeting - Championship |
3.5 | / | 4 |
| | | |
| New York 1898 (4) |
Cosmopolitan Club - Staten Island Club Match |
| | | | | | |
|
Koehler, G.H. - Hodges, A.B. |
0 - 1 |
| | | |
| New York 1898 (5) |
Brooklyn Club - Cosmopolitan Club Match |
| | | | | | |
|
Koehler, G.H. - Richardson, P. |
0 - 1 |
| | | |
| Lake Keuka 1898 |
Pennsylvania State Chess Association - New York State Chess Association Match |
3 | / | 7 |
| | | |
| New York 1899 (1) |
Manhattan Club Championship |
11 | / | 18 |
| | | |
| New York 1899 (2) |
New York State Championship |
1 | / | 3 |
| | | |
| Philadelphia 1899 (3) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Robinson, A.K. |
0.5 - 0.5 |
| | | |
| New York 1899 (3) |
Manhattan Club Championship |
2 | / | 7 |
| | | |
| New York 1900 (2) |
New York State Championship |
1 | / | 3 |
| | | |
| New York 1900 (3) |
Manhattan Club Masters Tournament |
6.5 | / | 8 |
| | | |
| New York 1900 (4) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Mlotkowski, S. |
1 - 0 |
| | | |
| New York 1901 (3) |
23rd New York State Chess Association Championship |
| | | | | | |
|
Koehler, G.H. - Howell, C.S. |
0 - 1 |
| | | |
| Philadelphia 1901 (3) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Young, J.W. (1) |
0.5 - 0.5 |
| | | |
| New York 1901 (5) |
Manhattan Club Championship |
8 | / | 14 |
| | | |
| New York 1901 (7) |
Manhattan Club Championship |
4.5 | / | 10 |
| | | |
| New York 1905 |
Manhattan Club - All New Jersey Match |
| | | | | | |
|
Koehler, G.H. - Stapfer, J.H. |
1 - 0 |
| | | |
| New York and Chicago 1905 (1) |
Manhattan Club - Chicago Club Telegraph Match |
| | | | | | |
|
Koehler, G.H. - Sonnenschein, M. |
0.5 - 0.5 |
| | | |
| Philadelphia 1905 (1) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Voigt, H.G. |
1 - 0 |
| | | |
| Sylvan Beach 1905 (1) |
18th New York State Chess Association Meeting - Rice Trophy Competition |
3.5 | / | 6 |
| | | |
| Sylvan Beach 1905 (2) |
18th New York State Chess Association Meeting - Rice Gambit Tournament |
7 | / | 10 |
| | | |
| New York and Berlin 1905 |
New York - Berlin Cable Match |
| | | | | | |
|
Koehler, G.H. - Lewitt, M. |
1 - 0 |
| | | |
| New York 1906 (1) |
Manhattan Club Championship |
5 | / | 12 |
| | | |
| New York 1906 (2) |
28th New York State Chess Association Midwinter Meeting - New York State Championship |
0.5 | / | 1 |
| | | |
| New York 1906 (3) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Goldberg, A. |
0.5 - 0.5 |
| | | |
| Philadelphia 1907 (2) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Robinson, D.S. |
1 - 0 |
| | | |
| New York 1908 (3) |
Manhattan Club Championship |
4 | / | 10 |
| | | |
| New York 1908 (4) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Kaiser, J.A. |
1 - 0 |
| | | |
| New York 1909 (2) |
Brooklyn Club - Rice Club Match |
| | | | | | |
|
Koehler, G.H. - Curt, C. |
0 - 1 |
| | | |
| Newark 1909 |
Staten Island Club - Rice Club Match |
| | | | | | |
|
Koehler, G.H. - Hodges, A.B. |
0.5 - 0.5 |
| | | |
| Philadelphia 1909 (4) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Driver, P.B. |
0.5 - 0.5 |
| | | |
| New York 1910 (4) |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Neill, B.M. |
0 - 1 |
| | | |
| New York 1914 (7) |
Manhattan Chess Club - Brooklyn Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Schroeder, M. (1) |
0.5 - 0.5 |
| | | |
| Philadelphia 1915 |
Franklin Chess Club - Manhattan Chess Club Match |
| | | | | | |
|
Koehler, G.H. - Wells, H.B. |
1 - 0 |
| | | |
