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diff --git a/changelog b/changelog
index 38c9793..dcae037 100644
--- a/changelog
+++ b/changelog
@@ -90,5 +90,33 @@
           pieceToCharTable and initial position to the GUI, sub-specification
           of variant fairy through an engine-defined option, allowing Seirawan-
           type gating moves in search. Seirawan Chess is added as new variant,
-          pluss several new combinations of Chess with different armies
+          plus several new combinations of Chess with different armies
+
+7/10/2011 Version 4.8R, keeping better track of which pieces are virgin in a
+          setup position, and have a better distinction between use of the '4'
+          move-rights code between an initial double-step jump without e.p.
+          rights (as could so far only be used for Pawns, as the Spartan
+          Hoplite), and castlings. As a result even royal pieces can now get
+          an initial double-step other than castling, which has been used to
+          implement Cambodian Chess as a sub-variant of Makruk (selected
+          through a new option). Falcon Chess was added as a new variant.
+
+12/2/2013 Version 4.8S. Fixes a lot of bugs:
+          * Setting up Seirawan positions with ungated pieces
+          * Making Seirawan gating with already gated pieces illegal
+          * Fix undo in Seirawan (by remembering gatings)
+          * Recognizing drop moves as illegal moves
+          * Hash-table was only half used
+          * Spurious result claims after under-promotion
+          * False mate claims in Spartan when promotion to K was possible
+          * Fix bug in Berolina e.p. capture that is actually non-capture
+          * Fix conditions for check extension on capture of checker
+          * Fix Clear Hash option, which did not work at all
+          * Fix addition of 6th & 7th-rank Pawn bonus when setting up position
+          * Adapt score by true piece value in case of (under-)promotion
+          In addition it prints msec-accurate timing info,
+          and can implement limited range sliders of range up to 5.
+          Some game definitions using the Remarkable Rookies army (which
+          uses a range-4 Rook) have been added as sub-variants of fairy.
+