Before you can strike in chess ? best by delivering mate ? first you have to threaten something. And precisely this is the central theme of George Renko?s new CD ? threats. With more than 2.500 selected tactical positions, the sheer amount of material is enormous. There are no lengthy introductions; without further ado, you can immediately start solving tasks until the cows come home ? there is no better way to improve your tactical vision. The tasks are sorted according to themes, but of course you can also load one by using random selection.