change log for P0005280 (close)

datetimeuserobjecttablefieldtypeoldnew
2017-09-1322:08:31Alfred Pfeiffer P0005280 problems cpluscomm  update Popeye 4.61 
2017-09-1322:08:07Alfred Pfeiffer wKh1 wTg7 wSe5f8 wBg2f2c2b2a2h3f3e3 sKe8 sTc4a8 sSg5c5 sBg4h5a5h6f7e7c7b7 position squares  update   
2017-09-1322:08:07Alfred Pfeiffer P0005280 problems cplus  update
2017-09-1310:44:21A.Buchanan P0005280 problems comment  updatewQB can only have been captured on h6 as dark square. The dark-squared bishops cannot release one another, so must be bQ captured on e3. So bQB was captured on f3. Some white officer (R,QB,Q) must have been captured on e3 to release bQB, but white-squared bishops cannot release one another, so must have been bQ that was captured first to release officer to be captured on e6. Therefore bQ escaped via h-file. bKB was captured at home, and bK moved out to h-file too to release bQ, and Black cannot castle. wQB can only have been captured on h6 as dark square. The dark-squared bishops cannot release one another, so must be bQ captured on e3. So bQB was captured on f3. Some white officer (R,QB,Q) must have been captured on e6 to release bQB, but white-squared bishops cannot release one another, so must have been bQ that was captured first to release officer to be captured on e6. Therefore bQ escaped via h-file. bKB was captured at home, and bK moved out to h-file too to release bQ, and Black cannot castle. 
2017-09-1218:02:15A.Buchanan P0005280 problems comment  update wQB can only have been captured on h6 as dark square. The dark-squared bishops cannot release one another, so must be bQ captured on e3. So bQB was captured on f3. Some white officer (R,QB,Q) must have been captured on e3 to release bQB, but white-squared bishops cannot release one another, so must have been bQ that was captured first to release officer to be captured on e6. Therefore bQ escaped via h-file. bKB was captured at home, and bK moved out to h-file too to release bQ, and Black cannot castle.