change log for P0001310 (close)

datetimeuserobjecttablefieldtypeoldnew
2023-07-2116:58:48A.Buchanan P0001310 problems solution  update1. gxf6ep! droht 2. 0-0#! (2.Kf2#?) R: 1. f7-f5 f6xD/Te7 etc 1. gxf6ep! droht 2. 0-0#! (2.Kf2#?) R: 1. f7-f5 f6xDe7,f6xTe7 etc 
2023-07-2116:58:20A.Buchanan P0001310 problems solution  update1. gxf6ep! droht 2. 0-0#! (2.Kf2#?) 1. gxf6ep! droht 2. 0-0#! (2.Kf2#?) R: 1. f7-f5 f6xD/Te7 etc 
2023-07-2116:50:29A.Buchanan P0001310 problems solution  update1. gxf6ep! droht 2. 0-0#! edit 1. gxf6ep! droht 2. 0-0#! (2.Kf2#?) 
2023-07-2116:49:47A.Buchanan P0001310 problems soltxt  updateWh caps: fxe7, hxg5 Bl caps: axbxc2, wBf1 If w00 rights remain, the only way to give White a prior move is to retract f2-f4, so ep would be on. The key threatens (inter alia) 2. 0-0#/Kf2#, and both remain whatever Black plays, so the castling retro-justification for ep can never be disrupted. Wh caps: fxe7, hxg5 Bl caps: axbxc2, wBf1 If wK castling right remains, the only way to give White a prior move is to retract f7-f5, so ep would be on. The key threatens (inter alia) 2. 0-0#/Kf2#, and both remain whatever Black plays, so the castling retro-justification for ep can never be disrupted. R: 1. S~a3? a3-a4? blocks wT from retracting to home square if wK castling right remains.  
2022-06-0615:02:25A.Buchanan a posteriori (AP) (Type Petrovic) refkey addition  update Type Petrovic 
2022-05-2810:33:00A.Buchanan P0001310 problems soltxt  update Wh caps: fxe7, hxg5 Bl caps: axbxc2, wBf1 If w00 rights remain, the only way to give White a prior move is to retract f2-f4, so ep would be on. The key threatens (inter alia) 2. 0-0#/Kf2#, and both remain whatever Black plays, so the castling retro-justification for ep can never be disrupted.  
2022-05-2810:26:21A.Buchanan P0001310 problems cpluscomm  update1. gxf6ep! droht 2. 0-0#! HC+ Popeye v4.87 & simple retro-logic 
2022-05-2810:26:00A.Buchanan P0001310 problems solution  update 1. gxf6ep! droht 2. 0-0#! edit 
2022-05-2810:24:50A.Buchanan P0001310 problems cpluscomm  update 1. gxf6ep! droht 2. 0-0#! 
2022-05-2810:24:50A.Buchanan P0001310 problems cplus  update
2022-05-279:03:36A.Buchanan Dragan Lj. Petrovic refaut   add  
2022-05-279:02:31A.Buchanan Dragan Lj. Petrovic refaut   remove  
2022-05-279:02:16A.Buchanan P0001310 problems stip  update#2 #2 (AP) 
2020-12-088:32:20A.Buchanan 2# refgen   add  
2020-12-088:30:30A.Buchanan En passant as key refkey   remove  
2020-12-088:30:13A.Buchanan En passant as key refkey keyid  updateS0000010 S0000165 
2010-09-1013:48:05Mario Richter En passant as key refkey   add  
2010-06-1322:56:38Gerd Wilts (38) Mat Plus 12 10-12/2009 refsrc date  update 10-12/2009 
2010-06-1322:56:24Gerd Wilts (38) Mat Plus 12  refsrc   add