, ▁C IS ▁Cup ▁( M osc ow , ▁ 1 9 9 1 ) ▁- ▁I , ▁Russian ▁Open ▁Cup ▁( M osc ow , ▁ 1 9 9 7 ) ▁- ▁I , ▁León ▁ 2 0 1 0 ▁- ▁I - II . ▁ ▁He ▁was ▁the ▁Bl itz ▁Ch ess ▁Champion ▁of ▁Poland ▁in ▁ 1 9 9 9 ▁and ▁ 2 0 0 1 . ▁ ▁Co aching ▁work ▁K ras enk ow ▁has ▁co ached ▁national ▁teams , ▁young ▁pro dig ies , ▁including ▁many ▁future ▁G M s , ▁and ▁occasionally ▁top ▁players ▁including ▁Vis wan athan ▁An and . ▁National ▁coach ▁of ▁Poland ▁in ▁ 2 0 1 0 ▁- ▁ 2 0 1 4 ▁and ▁Turkey ▁since ▁ 2 0 1 6 . ▁He ▁has ▁been ▁a ▁F IDE ▁Senior ▁Tra iner ▁since ▁ 2 0 1 2 . ▁ ▁The oret ical ▁contributions ▁K ras enk ow ▁has ▁made ▁major ▁contributions ▁to ▁several ▁areas ▁of ▁opening ▁theory , ▁most ▁not ably ▁in ▁the ▁Class ical ▁King ' s ▁Indian ▁Def ense . ▁His ▁consistent ▁use ▁of ▁the ▁relative ▁sid eline ▁ 5 . h 3 ▁in ▁that ▁opening ▁helped ▁to ▁establish ▁it ▁as ▁a ▁vi able ▁manner ▁of ▁comb ating ▁the ▁King ' s ▁Indian . ▁Other ▁members ▁of ▁the ▁el ite ▁now ▁use ▁the ▁system ▁from ▁time ▁to ▁time , ▁including ▁on ▁occasion ▁Magn us ▁Car ls en . ▁It ▁is ▁typically ▁called ▁the ▁Mak og on ov ▁system , ▁though ▁some