File:Viererschach.jpg - Wikimedia Commons

Soccer stadion birds view hi-res stock photography and images - Alamy

Category:Chess starting position - Wikimedia Commons

Category:Chess players in art - Wikimedia Commons

File:4 Fish.jpg - Wikimedia Commons

File:File-4.jpg - Wikimedia Commons

Category:Chess players in art - Wikimedia Commons

File:Wilhelm IV. Herzog von Bayern 1512.jpg - Wikimedia Commons

File:Schedelsche Weltchronik Struktur des Reiches.jpg - Wikipedia

German Panzer IV during battles eastwards of Volchansk, a place on the Donets front. The tank in the background is a Panzerkampfwagen IV (Sd.Kfz. 161). war correspondent: Haehle Stock Photo - Alamy