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Provoctor(V) and Dimachaer(I)(Winther 2006)add to arguments. First leg: (V)moves Bishop-like, (D) Rook-like. Mandatory bifurcation: Both must collide head on with any piece in path causing 45-degree change of direction.
8  U___ ___P___P___M___K___W___ ___P___    R = Rose(Betza NN); O = Canon
7  P___P___ ___P___R___ ___V___ ___I___O   U = Quintessence(Knappen NN)
6  D___ ___P___ ___P___ ___ ___ ___ ___P   V = Provoctor, moves Bishop
5   ___ ___ ___ ___ ___ ___ ___P___ ___O        must collide, 45 degrees
4   ___p___p___ ___ ___a___ ___ ___ ___p   I = Dimachaer, moves Rook
3  f___p___ ___p___ ___ ___ ___ ___p___w        must collide, 45 degrees
2  w___p___q___ ___ ___ ___q___ ___p___f   M = Flamingo,(2,7)leaper
1  p___f___ ___ ___k___ ___ ___ ___p___w   W = Wolf, doubly bent rider
   a   b   c   d   e   f   g   h   i   h   D = 5-square multipath
If Queen-c2 moves, Quintessence paths.         w,wazir; f,ferz; l,alfil
If Queen-g2 moves, Rose has path e7-g6-h4-g2-e1.         a,cardinal
If Pawn-b4 or -c4 moves, Dragon-a6 has one pathway.
If Pawn-d3 moves, Provoctor moves g7-f6-e5(piece-d4)-e4-e3-e2-e1.
If Pawn-i3 moves, Dimaecher has pathway i7-i6-i5-(piece-i4)-h4-g3-f2-e1.
If Cardinal-f4 moves, Wolf has pathway g8-f7-f6-f5-f4-f3-f2-e1.
King cannot move because of both Canons' and Flamingo's covering all.(16)