diff --git a/.gitattributes b/.gitattributes
index e02cb9b..d45a817 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -22,4 +22,4 @@
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 ## Specific LFS patterns
-nn-6877cd24400e.nnue filter=lfs diff=lfs merge=lfs -text
+nn-ad9b42354671.nnue filter=lfs diff=lfs merge=lfs -text
diff --git a/Stockfish-sf_15.1.tar.gz b/Stockfish-sf_15.1.tar.gz
new file mode 100644
index 0000000..ccbe52d
--- /dev/null
+++ b/Stockfish-sf_15.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d4272657905319328294355973faee40a8c28e3eecb0e7b266ed34ff33383b76
+size 193408
diff --git a/Stockfish-sf_15.tar.gz b/Stockfish-sf_15.tar.gz
deleted file mode 100644
index f392ad3..0000000
--- a/Stockfish-sf_15.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0553fe53ea57ce6641048049d1a17d4807db67eecd3531a3749401362a27c983
-size 189578
diff --git a/date.patch b/date.patch
index b119afe..0558931 100644
--- a/date.patch
+++ b/date.patch
@@ -1,24 +1,18 @@
-Index: Stockfish-sf_14/src/misc.cpp
+Index: Stockfish-sf_15.1/src/misc.cpp
 ===================================================================
---- Stockfish-sf_14.orig/src/misc.cpp
-+++ Stockfish-sf_14/src/misc.cpp
-@@ -142,18 +142,10 @@ public:
- 
- string engine_info(bool to_uci) {
- 
--  const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
--  string month, day, year;
--  stringstream ss, date(__DATE__); // From compiler, format is "Sep 21 2008"
-+  stringstream ss;
- 
-   ss << "Stockfish " << Version << setfill('0');
- 
--  if (Version.empty())
--  {
--      date >> month >> day >> year;
--      ss << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
--  }
+--- Stockfish-sf_15.1.orig/src/misc.cpp
++++ Stockfish-sf_15.1/src/misc.cpp
+@@ -156,13 +156,6 @@ string engine_info(bool to_uci) {
+       ss << "-";
+       #ifdef GIT_DATE
+       ss << GIT_DATE;
+-      #else
+-      const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
+-      string month, day, year;
+-      stringstream date(__DATE__); // From compiler, format is "Sep 21 2008"
 -
-   ss << (to_uci  ? "\nid author ": " by ")
-      << "the Stockfish developers (see AUTHORS file)";
+-      date >> month >> day >> year;
+-      ss << year << setw(2) << setfill('0') << (1 + months.find(month) / 4) << setw(2) << setfill('0') << day;
+       #endif
  
+       ss << "-";
diff --git a/nn-6877cd24400e.nnue b/nn-6877cd24400e.nnue
deleted file mode 100644
index ebb54f0..0000000
--- a/nn-6877cd24400e.nnue
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6877cd24400e01b19ff12ae3068ae242152802bdd330e66f7b6703865251d6e3
-size 47001499
diff --git a/nn-ad9b42354671.nnue b/nn-ad9b42354671.nnue
new file mode 100644
index 0000000..b199747
--- /dev/null
+++ b/nn-ad9b42354671.nnue
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ad9b423546714137916bd38978af6fd68d7b8951bef25ff76bf43da72d6cb786
+size 47001499
diff --git a/stockfish-remove-net.patch b/stockfish-remove-net.patch
index 2bc3f11..dcb1367 100644
--- a/stockfish-remove-net.patch
+++ b/stockfish-remove-net.patch
@@ -1,7 +1,8 @@
-diff -urEbw Stockfish-sf_15/src/Makefile Stockfish-sf_15.new/src/Makefile
---- Stockfish-sf_15/src/Makefile	2022-04-18 22:03:20.000000000 +0200
-+++ Stockfish-sf_15.new/src/Makefile	2022-04-20 21:20:19.092144400 +0200
-@@ -722,7 +722,6 @@
+Index: Stockfish-sf_15.1/src/Makefile
+===================================================================
+--- Stockfish-sf_15.1.orig/src/Makefile
++++ Stockfish-sf_15.1/src/Makefile
+@@ -748,7 +748,6 @@ help:
  	@echo ""
  	@echo "help                    > Display architecture details"
  	@echo "build                   > Standard build"
@@ -9,14 +10,14 @@ diff -urEbw Stockfish-sf_15/src/Makefile Stockfish-sf_15.new/src/Makefile
  	@echo "profile-build           > Faster build (with profile-guided optimization)"
  	@echo "strip                   > Strip executable"
  	@echo "install                 > Install executable"
-@@ -783,14 +782,14 @@
+@@ -810,14 +809,14 @@ else
  endif
  
  
 -.PHONY: help build profile-build strip install clean net objclean profileclean \
 +.PHONY: help build profile-build strip install clean objclean profileclean \
          config-sanity icc-profile-use icc-profile-make gcc-profile-use gcc-profile-make \
-         clang-profile-use clang-profile-make
+         clang-profile-use clang-profile-make FORCE
  
 -build: net config-sanity
 +build: config-sanity
@@ -27,7 +28,7 @@ diff -urEbw Stockfish-sf_15/src/Makefile Stockfish-sf_15.new/src/Makefile
  	@echo ""
  	@echo "Step 1/4. Building instrumented executable ..."
  	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_make)
-@@ -817,30 +816,6 @@
+@@ -844,40 +843,6 @@ install:
  clean: objclean profileclean
  	@rm -f .depend *~ core
  
@@ -35,30 +36,40 @@ diff -urEbw Stockfish-sf_15/src/Makefile Stockfish-sf_15.new/src/Makefile
 -net:
 -	$(eval nnuenet := $(shell grep EvalFileDefaultName evaluate.h | grep define | sed 's/.*\(nn-[a-z0-9]\{12\}.nnue\).*/\1/'))
 -	@echo "Default net: $(nnuenet)"
--	$(eval nnuedownloadurl := https://tests.stockfishchess.org/api/nn/$(nnuenet))
+-	$(eval nnuedownloadurl1 := https://tests.stockfishchess.org/api/nn/$(nnuenet))
+-	$(eval nnuedownloadurl2 := https://github.com/official-stockfish/networks/raw/master/$(nnuenet))
 -	$(eval curl_or_wget := $(shell if hash curl 2>/dev/null; then echo "curl -skL"; elif hash wget 2>/dev/null; then echo "wget -qO-"; fi))
--	@if test -f "$(nnuenet)"; then \
--            echo "Already available."; \
--         else \
--            if [ "x$(curl_or_wget)" = "x" ]; then \
--               echo "Automatic download failed: neither curl nor wget is installed. Install one of these tools or download the net manually"; exit 1; \
--            else \
--               echo "Downloading $(nnuedownloadurl)"; $(curl_or_wget) $(nnuedownloadurl) > $(nnuenet);\
--            fi; \
--        fi;
+-	@if [ "x$(curl_or_wget)" = "x" ]; then \
+-	    echo "Automatic download failed: neither curl nor wget is installed. Install one of these tools or download the net manually"; exit 1; \
+-        fi
 -	$(eval shasum_command := $(shell if hash shasum 2>/dev/null; then echo "shasum -a 256 "; elif hash sha256sum 2>/dev/null; then echo "sha256sum "; fi))
--	@if [ "x$(shasum_command)" != "x" ]; then \
--	    if [ "$(nnuenet)" != "nn-"`$(shasum_command) $(nnuenet) | cut -c1-12`".nnue" ]; then \
--                echo "Failed download or $(nnuenet) corrupted, please delete!"; exit 1; \
--            fi \
--         else \
+-	@if [ "x$(shasum_command)" = "x" ]; then \
 -            echo "shasum / sha256sum not found, skipping net validation"; \
 -        fi
+-	@for nnuedownloadurl in "$(nnuedownloadurl1)" "$(nnuedownloadurl2)"; do \
+-	   if test -f "$(nnuenet)"; then \
+-	      echo "$(nnuenet) available."; \
+-	   else \
+-	      if [ "x$(curl_or_wget)" != "x" ]; then \
+-	         echo "Downloading $${nnuedownloadurl}"; $(curl_or_wget) $${nnuedownloadurl} > $(nnuenet);\
+-	      fi; \
+-	   fi; \
+-	   if [ "x$(shasum_command)" != "x" ]; then \
+-	      if [ "$(nnuenet)" != "nn-"`$(shasum_command) $(nnuenet) | cut -c1-12`".nnue" ]; then \
+-	         echo "Removing failed download"; rm -f $(nnuenet); \
+-	      else \
+-	         echo "Network validated"; break; \
+-	      fi; \
+-	   fi; \
+-	done
+-	@if ! test -f "$(nnuenet)"; then \
+-	    echo "Failed to download $(nnuenet)."; \
+-	fi
 -
  # clean binaries and objects
  objclean:
  	@rm -f stockfish stockfish.exe *.o ./syzygy/*.o ./nnue/*.o ./nnue/features/*.o
-@@ -864,7 +839,7 @@
+@@ -901,7 +866,7 @@ default:
  
  all: $(EXE) .depend
  
diff --git a/stockfish.changes b/stockfish.changes
index 9bc3472..c5a59f9 100644
--- a/stockfish.changes
+++ b/stockfish.changes
@@ -1,3 +1,31 @@
+-------------------------------------------------------------------
+Tue Dec  6 15:15:03 UTC 2022 - Michael Vetter <mvetter@suse.com>
+
+- Update to 15.1:
+  * Elo gain and competition results:
+    With this release, version 5 of the NNUE neural net architecture
+    has been introduced, and the training data has been extended to
+    include Fischer random chess (FRC) positions. As a result, Elo
+    gains are largest for FRC, reaching up to 50 Elo for doubly
+    randomized FRC (DFRC). More importantly, also for standard chess
+    this release progressed and will win two times more game pairs than
+    it loses against Stockfish 15. 
+  * New evaluation:
+    This release also introduces a new convention for the evaluation
+    that is reported by search. An evaluation of +1 is now no longer
+    tied to the value of one pawn, but to the likelihood of winning the
+    game. With a +1 evaluation, Stockfish has now a 50% chance of winning
+    the game against an equally strong opponent. This convention scales
+    down evaluations a bit compared to Stockfish 15 and allows for
+    consistent evaluations in the future.
+- Refresh:
+  * date.patch
+  * stockfish-remove-net.patch
+- Remove nn-6877cd24400e.nnue
+- Add nn-ad9b42354671.nnue
+- Keep man page and stockfish-interface.txt but remove URL from
+  Source. Because not available anymore.
+
 -------------------------------------------------------------------
 Wed Apr 20 19:17:58 UTC 2022 - Michael Vetter <mvetter@suse.com>
 
diff --git a/stockfish.spec b/stockfish.spec
index 526d6f2..3120fc0 100644
--- a/stockfish.spec
+++ b/stockfish.spec
@@ -17,9 +17,9 @@
 
 
 # See evaluate.h > EvalFileDefaultName
-%define nnuenet nn-6877cd24400e.nnue
+%define nnuenet nn-ad9b42354671.nnue
 Name:           stockfish
-Version:        15
+Version:        15.1
 Release:        0
 Summary:        Chess engine
 License:        GPL-3.0-or-later
@@ -27,8 +27,8 @@ URL:            https://stockfishchess.org
 Source0:        https://github.com/official-stockfish/Stockfish/archive/sf_%{version}.tar.gz#/Stockfish-sf_%{version}.tar.gz
 Source1:        https://tests.stockfishchess.org/api/nn/%{nnuenet}
 # steal some documentation from ubuntu
-Source10:       https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/vivid/%{name}/vivid/download/head:/engineinterface.txt-20091204230329-yljoyxocuxhxg1ot-78/engine-interface.txt#/%{name}-interface.txt
-Source11:       https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/vivid/%{name}/vivid/download/head:/%{name}.6-20091204230329-yljoyxocuxhxg1ot-76/%{name}.6
+Source10:       %{name}-interface.txt
+Source11:       %{name}.6-20091204230329-yljoyxocuxhxg1ot-76/%{name}.6
 # If 'Version' is not set it will display the date as version number. We dont want __DATE__ and Version is set anyways.
 Patch0:         date.patch
 # Don't try to download file. We already have it.