Klaus Hadenfeld
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| GER-ch 12th Seniors | 07/29/2000 | 1980 | Germany |
| Lucky op 2nd | 10/??/1999 | 1251 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| D07 | Queen's Gambit Declined, Chigorin defence | 1 games |
| A52 | Budapest defence | 1 games |
| E90 | King's Indian, 5.Nf3 | 1 games |
| A45 | Queen's pawn game | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B50 | Sicilian | 2 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |
| B93 | Sicilian, Najdorf, 6.f4 | 1 games |
| B78 | Sicilian, dragon, Yugoslav attack, 10.O-O-O | 1 games |


Germany