Blackwood (publishing house) Blackwood (publishing house) William Blackwood and Sons was a Scottish publishing house and printer founded by William Blackwood in 1804. It played a key role in literary history, publishing many important authors, for example John Buchan, George Tomkyns Chesney, Joseph Conrad, George Eliot, E. M. Forster, John Galt, Thomas de Quincey, Charles Reade, Margaret Oliphant, John Hanning Speke and Anthony Trollope, both in books and in the monthly "Blackwood’s Magazine". In 1804 William Blackwood opened a shop in South Bridge Street, Edinburgh, for the sale of old, rare and curious books. He undertook the Scottish agency for John Murray and
Chess tactic would prefer to pass and make no move, but a move has to be made, all of which weaken his position. Situations involving zugzwang occur uncommonly, but when they do occur, it is almost always in the endgame, where there are fewer choices of available moves. "Zwischenzug" (German for "intermediate move") is a common tactic in which a player under threat, instead of directly countering, introduces an even more devastating threat. The tactic often involves a new attack against the opponent's queen or king. The opponent then may be forced to address the new threat, abandoning the earlier attack. The