Marshall, Frank James, 1877-1944 · Leeds : British Chess Magazine · leaf 124
ting to this obvious 'pin.' The subsequent manifold chances of attack are of more practical importance than the exchange. 12 P—K R 12 B—R 4 13 BxR Or 13 P—K Kt 4, (if) or 13 P—K Kt 4, (if) BxB; BxP; 14 B x R, etc.; not to have Black Pawn lodged at B 6, as in the actual ase,— this would be better… … WHITE (MR. MARSHALL
Chess
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.