# No.1200 (GF)

 No.1200 Geoff Foster (Австралия) Оригинальные сказочные задачи JF – 2017(I): январь – июнь

Определение: (показать/спрятать)

 No.1200 Geoff Foster Australia original – 08.04.2017 Solution: (click to show/hide) white Ke3 Rf2 Bb1 Qb4 black Kc1 Pc6c7e7g5 s#11                                            (4+5) Alphabetic Chess 1.Bb1-a2 ! 1...Kc1-d1 2.Ba2-b3 + 2...Kd1-c1 3.Bb3-a4 3...c6-c5 4.Ba4-b5 4...Kc1-d1 5.Qb4-c3 5...c5-c4 6.Bb5-a6 6...c7-c5 7.Ba6-b7 7...e7-e5 8.Bb7-e4 8...g5-g4 9.Qc3-d4 + 9...c5*d4 # 7...e7-e6 8.Bb7-a8 8...e6-e5 9.Ba8-e4 9...g5-g4 10.Qc3-d4 + 10...c5*d4 # 6...c7-c6 7.Ba6-b7 7...c6-c5 8.Bb7-a8 8...e7-e5 9.Ba8-e4 9...g5-g4 10.Qc3-d4 + 10...c5*d4 # 8...e7-e6 9.Ba8-b7 9...e6-e5 10.Bb7-e4 10...g5-g4 11.Qc3-d4 + 11...c5*d4 # { The try 1.Be4? Kd1 2.Qc3 c5 3.Qb2 c4 4.Qc3 c6 fails because the wQ must move. (C+ with Popeye 4.75)} It is based on my No.1198, but much shorter and also C+ (Popeye 4.73 and WinChloe 3.35). The white Bishop does a ‘staircase’ all the way up the board, from the bottom to the top rank, and also makes an extra tempo move 9.Bb7. (Author)