From ad171bb83bd6ece486052910ebbcc54e9a09f524 Mon Sep 17 00:00:00 2001
From: Dylan Tague <161772172+DMDTague@users.noreply.github.com>
Date: Wed, 16 Sep 2026 21:20:52 -0400
Subject: [PATCH 1/2] Handle Stockfish 19 x86-64 asset naming

---
 tournament/setup_windows.ps1 | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/tournament/setup_windows.ps1 b/tournament/setup_windows.ps1
index 2cece8f..8ec5455 100644
--- a/tournament/setup_windows.ps1
+++ b/tournament/setup_windows.ps1
@@ -78,14 +78,23 @@ Copy-Item $fastExe.FullName (Join-Path $BinDir 'fastchess.exe') -Force
 Write-Host 'Fetching latest official Stockfish release...'
 $sfRelease = Get-LatestRelease 'official-stockfish/Stockfish'
 $sfAssets = @($sfRelease.assets)
-$sfAsset = $sfAssets | Where-Object { $_.name -match '(?i)windows.*x64.*sse41.*\.zip$' } | Select-Object -First 1
-if (-not $sfAsset) {
-    $sfAsset = $sfAssets | Where-Object { $_.name -match '(?i)windows.*x64.*avx2.*\.zip$' } | Select-Object -First 1
-}
+
+# Stockfish 19 names its 64-bit Intel/AMD package
+# stockfish-windows-x86-64-universal.zip. Older releases have also used x64 and
+# feature-specific package names, so accept either spelling while rejecting ARM64.
+$sfAsset = $sfAssets | Where-Object {
+    $_.name -match '(?i)^stockfish-windows-(x86[-_]?64|x64).*\.zip$' -and
+    $_.name -notmatch '(?i)arm64'
+} | Sort-Object {
+    if ($_.name -match '(?i)sse41') { 0 }
+    elseif ($_.name -match '(?i)universal') { 1 }
+    elseif ($_.name -match '(?i)avx2') { 2 }
+    else { 3 }
+} | Select-Object -First 1
+
 if (-not $sfAsset) {
-    $sfAsset = $sfAssets | Where-Object { $_.name -match '(?i)windows.*x64.*\.zip$' } | Select-Object -First 1
+    throw "Could not find a compatible Windows x86-64 Stockfish ZIP in release $($sfRelease.tag_name). Assets: $((@($sfAssets.name) -join ', '))"
 }
-if (-not $sfAsset) { throw "Could not find a compatible Windows x64 Stockfish ZIP in release $($sfRelease.tag_name)." }
 $sfZip = Join-Path $DownloadDir $sfAsset.name
 Invoke-DownloadFile $sfAsset.browser_download_url $sfZip
 $sfExtract = Join-Path $DownloadDir 'stockfish'

From 42e64625cfe7247bb3b6712972260644392e2498 Mon Sep 17 00:00:00 2001
From: Dylan Tague <161772172+DMDTague@users.noreply.github.com>
Date: Wed, 16 Sep 2026 21:21:07 -0400
Subject: [PATCH 2/2] Test current Stockfish Windows asset discovery

---
 .github/workflows/tournament-tools.yml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/.github/workflows/tournament-tools.yml b/.github/workflows/tournament-tools.yml
index cb8c98d..b385d09 100644
--- a/.github/workflows/tournament-tools.yml
+++ b/.github/workflows/tournament-tools.yml
@@ -84,6 +84,24 @@ jobs:
             Write-Host "Parsing $($_.Name)"
             [void][ScriptBlock]::Create((Get-Content $_.FullName -Raw))
           }
+      - name: Verify current Stockfish Windows x86-64 asset is discoverable
+        shell: pwsh
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          $headers = @{
+            'User-Agent' = 'Pickle-Elo-Harness-CI'
+            'Authorization' = "Bearer $env:GITHUB_TOKEN"
+          }
+          $release = Invoke-RestMethod -Uri 'https://api.github.com/repos/official-stockfish/Stockfish/releases/latest' -Headers $headers
+          $asset = @($release.assets) | Where-Object {
+            $_.name -match '(?i)^stockfish-windows-(x86[-_]?64|x64).*\.zip$' -and
+            $_.name -notmatch '(?i)arm64'
+          } | Select-Object -First 1
+          if (-not $asset) {
+            throw "No compatible Windows x86-64 Stockfish ZIP found in $($release.tag_name)."
+          }
+          Write-Host "Resolved $($release.tag_name): $($asset.name)"
 
   windows-native-build:
     runs-on: windows-latest