Bughouse chess is controversial among chess teachers. The algebraic chess notation for chess can be used to record moves in bughouse games. A few countries do organize bughouse tournaments within the national chess federation. There are significantly fewer bughouse openings than there are chess openings. Many chess openings create weaknesses which can be easily exploited in bughouse. It is an essential part of bughouse gameplay. ICS compatible interfaces particularly suitable for bughouse include Thief and BabasChess. He was last seen alive walking in the direction of Bughouse Square, carrying a suitcase. Yearly, several dedicated bughouse tournaments are organized on a national and an international level. By the 1890s the park acquired its Bughouse Square moniker. Software such as BPGN viewer can be used to replay and analyse bughouse games. Below is an example bughouse game in the BPGN format. Bughouse openings are generally geared towards dominating vital squares and fast development. "Wondrous Bughouse" received positive reviews from most contemporary music critics. Bughouse can be played with three or more boards.