The chess piece is included in the pack.

Contents
001_studioHDRI.hdr
002_studioHDRI.hdr
003_studioHDRI.hdr
004_studioHDRI.hdr
005_studioHDRI.hdr
006_studioHDRI.hdr
007_studioHDRI.hdr
008_studioHDRI.hdr
009_studioHDRI.hdr
010_studioHDRI.hdr
011_studioHDRI.hdr
012_studioHDRI.hdr

knightBlack.fbx
knightBlack_Normal.tga
knightBlack_MetallicSmoothness.tga

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Now download Studio Lighting HDRI Pack FREE Unity