Revision of Jon Ludvig Hammer
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| Field | Before | After |
|---|---|---|
| Description | — | Jon Ludvig Nilssen Hammer is a Norwegian chess grandmaster and four-time Norwegian Chess Champion. He was the main second for Magnus Carlsen in the World Chess Championship 2013. |
| Type | — | person |
Added handles
- Instagram: gmjlh
- Facebook: gmjlh