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(PROBLEM THEMES THREE item)  BLACK MATES IN ONE. DoubleCannon(X) [Winther]
and DoubleBarrel(Z) [Winther] have optional second leg. X moves as Rook, Z as Bishop. If and only if to capture, each turns 45 degrees and jumps one
adjacent piece and moves on in a capture.
8  X___P___P___ ___P___K___ ___ ___P___P   FIND THE MATE IN ONE BY BLACK.
7  T___ ___X___ ___Z___P___P___I___ ___    G = Diag. Narrow Crooked NN
6  P___ ___ ___D___ ___ ___ ___P___R___        [Knappen]
5   ___G___ ___P___ ___ ___ ___ ___ ___O   I = Crooked NN [Betza]
4  p___ ___ ___ ___b___ ___ ___ ___ ___q   R = Rose[Betza]
3  p___ ___ ___p___ ___b___p___q___ ___p   T = Priest (Fantasy Grand),
2  p___ ___ ___ ___q___ ___ ___p___ ___p        ninety-degree continual
1  p___l___n___ ___ ___l___k___p___l___         diagonal one-step
   a   b   c   d   e   f   g   h   i   j   D = Dragon plural   
                                           O = Canon; l = Alfil   
              06cbab-97feda wvut4seir5ponm :noituloS