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+Scenario: legal highlights should not persist across piece selection
+  Given I start server and client
+  Then I am ready to play
+  When white selects "d2"
+  And white selects "d2"
+  And white selects "e2"
+  Given I switch to buffer "*Chessboard*"
+  Then the square at "d3" is unhighlighted
+
+Scenario: preserve last-move highlight after changing my mind
+  Given I start server and client
+  Then I am ready to play
+  When white moves "d4"
+  And black moves "e5"
+  And white selects "d4"
+  And white selects "d4"
+  Then the square at "e5" is highlighted last-move
+  When black selects "e5"
+  And black selects "e5"
+  Then the square at "e5" is highlighted last-move
+
+Scenario: preserve last-move highlight after pre-move invalidated
+  Given I start server and client
+  Then I am ready to play
+  When white moves "d4"
+  And black moves "e5"
+  And white moves "e4"
+  And white moves "d5"
+  Then the square at "d5" is highlighted pre-move
+  When black moves "ex"
+  Given I switch to buffer "*Chessboard*"
+  Then the square at "d4" is highlighted last-move
+
+Scenario: Legal highlight locus must needs reduce after opponent moves
+  Given I start server and client
+  Then I am ready to play
+  When white moves "d4"
+  And black moves "d5"
+  And black selects "e7"
+  Then the square at "e5" is highlighted legal
+  Then the square at "f6" is highlighted legal
+  And white moves "e4"
+  Given I switch to buffer "*Chessboard*<2>"
+  Then the square at "e5" is highlighted legal
+  Then the square at "f6" is unhighlighted
+
+Scenario: My opponent invalidates my pre-move.  I should not need to click twice for next selection.
+  Given I start server and client
+  Then I am ready to play
+  And white moves "d4"
+  And black moves "e5"
+  When black selects "e5"
+  Then the square at "e5" is highlighted selected
+  Then the square at "e4" is highlighted legal
+  And white moves "dx"
+  Given I switch to buffer "*Chessboard*<2>"
+  Then the square at "e5" is highlighted last-move
+  Then the square at "e4" is unhighlighted
+  When black selects "c7"
+  Then the square at "c7" is highlighted selected
+
+Scenario: paint-move had contained a redraw that was 2000 microseconds (still 1/200 of blink of an eye)
+  Given I start server and client
+  Then I am ready to play
+  When white moves "d4"
+  And black moves "c5"
+  And paint-move last 2 plies less than 300 microseconds (individually)