change log for P0001511 (close)

datetimeuserobjecttablefieldtypeoldnew
2022-04-1611:18:12A.Buchanan a posteriori (AP) (Type Petrovic) refkey addition  update Type Petrovic 
2022-04-1611:17:13A.Buchanan P0001511 problems cpluscomm  updateHC+ Popeye v4.87 & substantial retro-logicd HC+ Popeye v4.87 & substantial retro-logic 
2022-04-015:12:37A.Buchanan P0001511 problems solution  update1. bxa3ep,bxc3ep Dxe4 2. 0-0-0 Dxc6# 1. exd3ep Txb4 2. 0-0-0 Dxc6# There are 5 retro tries. 1. bxa3ep,bxc3ep Dxe4 2. 0-0-0 Dxc6# 1. exd3ep Txb4 2. 0-0-0 Dxc6# There are also 7 retro tries, which omit castling. 
2022-03-3120:33:12A.Buchanan P0001511 problems cpluscomm  update HC+ Popeye v4.87 & substantial retro-logicd 
2022-03-3120:33:12A.Buchanan P0001511 problems cplus  update
2022-03-3120:32:45A.Buchanan P0001511 problems solution  update1. bxa3ep,bxc3ep Dxe4 2. 0-0-0 Dxc6# 1. exd3ep Txb4 2. 0-0-0 Dxc6# 1. bxa3ep,bxc3ep Dxe4 2. 0-0-0 Dxc6# 1. exd3ep Txb4 2. 0-0-0 Dxc6# There are 5 retro tries. 
2022-03-3120:32:22A.Buchanan P0001511 problems soltxt  updateSchwarz Schläge: fxe; gxfxe. Weiße Schläge: gxf; hxgxh. R: 1. a2-a4 c7-c6 2. Ta3-b3 d7-d6 3. Ta6-a3 e7-e6 4. Tf6-a6 b5-b4 5. Tf7-f6 b6-b5 6. Sh8-g6 Black pawns: fxe,gxfxe. White pawns: gxf,hxgxh,b| If Black castling rights remain, then the cage in the East can only be unlocked by wTf7, White double pawn retraction of some kind is necessary to let the rook through. Example retraction: R: 1. a2-a4 c7-c6 2. Ta3-b3 d7-d6 3. Ta6-a3 e7-e6 4. Tf6-a6 b5-b4 5. Tf7-f6 b6-b5 6. Sh8-g6 Multiple ep can never be handled by Retro Strategy. Instead, PRA protocol is needed. But the assertion that Black castling rights remain seems to precede the PRA division into parts, which only includes the three possible ep, exactly one of which must be legal. 
2022-03-3120:25:59A.Buchanan P0001511 problems stip  updateh#2 (AP, RV) h#2 (AP PRA) 
2022-03-3120:23:45A.Buchanan En passant as key (3) refkey addition  update
2022-03-3120:15:59A.Buchanan P0001511 problems solution  updateSchwarz Schläge: fxe; gxfxe. Weiße Schläge: gxf; hxgxh. R: 1. a2-a4 c7-c6 2. Ta3-b3 d7-d6 3. Ta6-a3 e7-e6 4. Tf6-a6 b5-b4 5. Tf7-f6 b6-b5 6. Sh8-g6 1. bxa3ep (bxc3ep) Dxe4 2. 0-0-0 Dxc6# oder 1. exd3ep Txb3 2. 0-0-0 Dxc6# 1. bxa3ep,bxc3ep Dxe4 2. 0-0-0 Dxc6# 1. exd3ep Txb4 2. 0-0-0 Dxc6# 
2022-03-3120:14:17A.Buchanan P0001511 problems soltxt  update Schwarz Schläge: fxe; gxfxe. Weiße Schläge: gxf; hxgxh. R: 1. a2-a4 c7-c6 2. Ta3-b3 d7-d6 3. Ta6-a3 e7-e6 4. Tf6-a6 b5-b4 5. Tf7-f6 b6-b5 6. Sh8-g6 
2022-02-1513:07:31A.Buchanan En passant as key (2) refkey addition  update 
2020-12-088:52:05A.Buchanan En passant as key refkey keyid  updateS0000010 S0000165