411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...Nf6/2. c4/2...e6/3. Nc3/3...Bb4/4. a3/4...Ba5/5. b4
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Sämisch Variation rd nd bd qd kd rd pd pd pd pd pd pd pd pd nd bd pl pl pl pl nl pl pl pl pl rl bl ql kl bl nl rl
Sämisch Variation
5. b4
White punished black's careless play and will win black's bishop. Black may hold on to it with /5...Bb6/, but White can still play 6. c5.