Pairings

Why can't I berserk this? 2 6 Lucena's Revenge
grenbork (2140) 01 rise_bishop (2224)
Magagna (2108) 01 root2 (2086)
defensive_resources (2101) 01 dave3 (2081)
mgold (1930) 10 Drotciv (1866)
Soreby (1833) 01 esersens (1863)
giziti (1829) 01 MOHAMMEDALHAYEK (1791)
lepertoe (1672) 10 Thaitanium101 (1716)
chess131969 (1514) 01 Pughie (1654)