From 03274df1f9fc444b7faa600620986ec4739078a6 Mon Sep 17 00:00:00 2001
From: jl777 <jameslee777@yahoo.com>
Date: Tue, 29 Jan 2019 07:18:13 -1100
Subject: [PATCH] Reverse polarity

---
 src/cc/sudoku.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/cc/sudoku.cpp b/src/cc/sudoku.cpp
index 0696ec979..0fa750d6d 100644
--- a/src/cc/sudoku.cpp
+++ b/src/cc/sudoku.cpp
@@ -529,13 +529,13 @@ int32_t sudoku_captcha(uint32_t timestamps[81])
     //if ( n > 81/2 )
     {
         std::sort(list.begin(),list.end());
-        solvetime = (list[0] - list[n-1]);
-        if ( list[0] < list[n-1] )
+        solvetime = (list[n-1] - list[0]);
+        if ( list[0] >= list[n-1] )
         {
             printf("list[0] %u vs list[%d-1] %u\n",list[0],n,list[n-1]);
             return(-1);
         }
-        else if ( list[0] > chainActive.LastTip()->nTime+200 )
+        else if ( list[n-1] > chainActive.LastTip()->nTime+200 )
             return(-1);
         else if ( solvetime >= 777 )
             return(0);