Mezue ahịrịokwu na-esonụ: Ihe atụ a ma ama nke nkwụsị e4-e5 na-eduga na mwakpo eze mere na egwuregwu Penrose <unk> Tal site na
Egwuregwu Olimpik nke 1960 na Leipzig. Na 19.e5! dxe5 20.f5! Bb7 21.Rad1 Ba8 22.Nce4 White tinyere dike dị ike na e4, ebe e ji pawn na e5 mechie iberibe Black. N'oge na-adịghị anya, Penrose gbafere na f-file wee nweta mmeri dị egwu n'isi onye mmeri ụwa na-achị achị. Ihe atụ ndị ọzọ nke ọganihu a gụnyere Ojanen<unk>Keres, Estonia<unk>Finland egwuregwu, Helsinki 1960