# No.1487 (PT)

 No.1487  Pierre Tritten (France) Original Fairy problems JF-2020/I: January – June’2020

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 No.1487 Pierre Tritten France original – 29.02.2020 Solutions: (click to show/hide) white Kf3 Rb3 Bf5 Sa3 Pg7e6g4 black Kd3 Re4 Bc3 Sb8 Sb7 Pc7c6a5 h#2               b) Sa3→b1             (7+8) Face-To-Face  Breton a) 1.Sb8-a6 g7-g8=R 2.Sa6-b4 Bf5*e4[-g8] # b) wSa3-->b1 1.Sb8-d7 g7-g8=B 2.Sd7-f6 Rb3*c3[-g8] # { (C+ by WinChloe and Popeye 4.83)} - Interchange of function between white Bishop/white Rook (guard after change of move provided by black Knight / mate) - Change of move by black Knight has positive effect for Black (may capture mating piece) but also negative effects (restore white piece initial move and annihilate black piece) - White Pawn promotes only to be annihilated (Author)

### 2 Responses to No.1487 (PT)

1. Kjell Widlert says:

Most spectacular is the fact that the FTF-transformed bSb4/f6 cannot capture the mating piece because Black would have to remove his own Bc3/Re4, re-activating the transformed white piece with self-check.

Most subtle – and to me, most interesting – is the promotion on g8, played only so that White has something other than Rb3/Bf5 (which are needed to guard flights) to remove in the mating move.

2. Paul Raican says:

Checked also by Jacobi. Try in a): 1.Kd2? Rb1 2.Rxe6 [-c6] Sc4+ 3.c7-c5! and in b): 1.Kc4? Rb5 2.Rd4 Sa3+ 3.a5-a4!