Dunst Opening Lambertville, New Jersey), giving the opening its most popular name in the United States. The Dutch International Master and correspondence grandmaster Dirk Daniel ("Dick D.") van Geet (March 1, 1932 – April 29, 2012) frequently played 1.Nc3, so it is often called the van Geet's Opening in the Netherlands. The appellation Sleipnir seems to come from Germany. Sleipnir is Odin's ("Wotan" in German) magical eight-legged horse, and chess knights are horses with up to eight different possible moves each turn. Czech Jan Kotrč (1862–1943), editor and publisher of the magazine "České Listy", said the opening was analyzed by English players.
Sleipnir (web browser) add-ons created by users. Sleipnir 2 is one of the few browsers to still support Windows 98. Sleipnir 3 for Windows: Includes tab options, tab groups, Touchpaging to flick between tabs using your mouse, and mouse gestures. Sleipnir 3 for Mac: Switch tabs by swiping tabs left or right-click; Operate tabs using gestures; TiledTab - Pinch-in on the TrackPad to view a list of tabs; Hold And Go - Hold down on a link to open in the background; Ad Block; Tab groups for managing tabs; Sync bookmarks with other devices using Fenrir Pass; The standard full-screen with Mac OS