# No.777,778 (GF)

 No.777, 778 Geoff Foster(Australia) Original Problems, Julia’s Fairies – 2015 (I): January – June    →Previous ; →Next ; →List 2015(I) Please send your original fairy problems to: julia@juliasfairies.com

No.777, 778 by Geoff Foster – Two nice 3-men in Back-to-Back! Each problem has a twin in which a black King is replaced by a neutral one. (JV)

Definition:

Back-To-Back: When pieces of opposite colors stand back-to-back with each other on the same file (white piece is on the top of black!), they exchange their roles. A pawn on the first rank cannot move. Any piece can make an en passant capture when it has got a role of Pawn by Back-To-Back.

 No.777 Geoff FosterAustraliaoriginal – 14.04.2015 Solutions: (click to show/hide) black kh7 neutral qd4 sh2 h#2.5               b) nKh7         (0+1+2)Back-To-Back a) 1...nQd4-h8 + 2.Kh7-a7 nQh8-a8 + 3.Ka7-g1 nQa8-h1 # b) +nKh7 1...nSh2-g4 2.nSg4-h6 + nKh7-g5 3.nQd4-d1 nQd1-h5 # { (C+ by Popeye 4.69 and WinChloe 3.31)} No.778 Geoff FosterAustraliaoriginal – 14.04.2015 Solutions: (click to show/hide) Black ke4 neutral qf2 sc4 h#2.5              b) nKe4         (0+1+2)Back-To-Back a) 1...nQf2-c5 + 2.nSc4-a2 nQc5-e5 + 3.Ke4-b1 nQe5-a1 # b) +nKe4 1...nKe4-d3 2.nSc4-d2 + nKd3-c1 3.nQf2-d4 nKc1-d1 # { (C+ by Popeye 4.69 and WinChloe 3.31)} In the second mate White moves the nS like a King, giving check. Black moves the nK like a Knight, so the nK can only move to b2, c3, e3 or f2, which are guarded by the nQ. (Author)