Yuri Averbakh, "Chess Middlegames: Essential Knowledge"
English | ISBN: 1857441257 | 1996 | PDF | 109 pages | 6 MB

In this book the author tells us so there are only 2 effective attacking procedures, which leading to success - the combined attack and double blow. This is very important and not quite understood, but if you mastery these techniques you might not be so dangerous, but much more carefully player.