From dd3c92f6f789931c260408869b17eba05587f4b5 Mon Sep 17 00:00:00 2001
From: Trianta <56975502+Trimutex@users.noreply.github.com>
Date: Fri, 3 Nov 2023 01:01:28 -0500
Subject: [PATCH] Minor final check performance increase

---
 src/sudoku.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/sudoku.cpp b/src/sudoku.cpp
index 782bfc6..3e6c1bf 100644
--- a/src/sudoku.cpp
+++ b/src/sudoku.cpp
@@ -30,8 +30,8 @@ void Sudoku::Solve(void) {
 
 bool Sudoku::IsBoardSolved(void) {
     int row, column;
-    for (row = 0; row < 9; ++row) {
-        for (column = 0; column < 9; ++column) {
+    for (row = 0; row < 9; row += 3) {
+        for (column = 0; column < 9; column += 3) {
             if (!GetUnusedRow(row).empty()) { return false; }
             if (!GetUnusedColumn(column).empty()) { return false; }
             if (!GetUnusedSubgrid(row, column).empty()) { return false; }