From: Simon Tatham Date: Sun, 30 Oct 2016 17:59:13 +0000 (+0000) Subject: Clarify the Black Box rules slightly. X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;ds=sidebyside;h=5123b1bf68777ffa86e651f178046b26a87cf2d9;p=sgt-puzzles.git Clarify the Black Box rules slightly. Chris Boyle points out that two of the rules are implicitly intended to be read as only applying if a previous rule hadn't already decided what would happen, and suggested that since not all readers infer that priority order, it would be better to explicitly make them mutually exclusive so that there can be no confusion about which one applies. --- diff --git a/puzzles.but b/puzzles.but index 523574c..2508fe3 100644 --- a/puzzles.but +++ b/puzzles.but @@ -1553,11 +1553,11 @@ affected by balls in one of the following ways: re-emerge. This includes beams that meet a ball on the first rank of the arena. -\b A beam with a ball to its front-left square gets deflected 90 degrees - to the right. +\b A beam with a ball in its front-left square and no ball ahead of it + gets deflected 90 degrees to the right. -\b A beam with a ball to its front-right square gets similarly deflected - to the left. +\b A beam with a ball in its front-right square and no ball ahead of + it gets similarly deflected to the left. \b A beam that would re-emerge from its entry location is considered to be \q{reflected}.