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In second drawing above, Sissa at c3 captures Queen at e7 by its 'modified Nightrider route' c3-d4-e5-e6-e7. The other pathway c3-c4-c5-e6-d7 is blocked by Rook at c5, but for two-fold-pathway square, one path is sufficient to complete move (and capture). Sissa goes to N-Rider squares by two-fold way, and Rook squares by four-fold way. Also making same distinction is the angled change of direction. When it turns 45 degrees, Sissa goes to N-Rider square; when 135 degrees, Rook square. It is not necessary, as in article, to think in terms of 225- or 315-degree changes of direction--a '315 turn' is just a 45-degree one the other way for Chess purposes.
Article does not discuss multiple pathways. In fact, Sissa moves to squares of Rook plus those of Nightrider. What is name, as 'Unicorn' is B + NN? However, Sissa does not leap like NN or slide like Rook. Actually it moves to each 'N-Rider square' by two unique paths and 'Rook square' by four(4) routes. Four pathways may be cut to two only by proximity to edge. Still, intervening pieces may reduce any 4-fold way to 3-, 2-, or one, or prohibit move altogether; and any 2-fold way to 1 or 0. More interesting innovation than most CV games that come from new combinations or small change of old elements.
Of course Sissa has two pathways to each square on any rectangular board, and either or both may be blocked. 225- and 315-degree angles throw one for a second, but Sissa is a two-path piece, like Eric Greenwood's Cavalier and Duke (both used before in Pritchard ECV games) and like Betza's Rose. I guess 'multiple-path' applies to two possibilities.
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