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Task/Generate-Chess960-starting-position/Tcl/generate-chess960-starting-position.tcl

@@ -0,0 +1,18 @@
+package require struct::list
+
+proc chess960 {} {
+    while true {
+	set pos [join [struct::list shuffle {N N B B R R Q K}] ""]
+	if {[regexp {R.*K.*R} $pos] && [regexp {B(..)*B} $pos]} {
+	    return $pos
+	}
+    }
+}
+
+# A simple renderer
+proc chessRender {position} {
+    string map {P ♙ N ♘ B ♗ R ♖ Q ♕ K ♔} $position
+}
+
+# Output multiple times just to show scope of positions
+foreach - {1 2 3 4 5} {puts [chessRender [chess960]]}