diff --git a/DbCoreLib.pro b/DbCoreLib.pro
new file mode 100644
index 0000000..5129a26
--- /dev/null
+++ b/DbCoreLib.pro
@@ -0,0 +1,21 @@
+QT += core
+QT -= gui widgets
+
+PROJECT_ROOT = ../..
+
+TARGET = dbcore
+
+DEFINES += DBCORELIB_LIBRARY
+
+SOURCES +=
+
+HEADERS += dbcorelib_global.h \
+           fixedsizematrix.h
+
+FORMS +=
+
+RESOURCES +=
+
+TRANSLATIONS +=
+
+include($${PROJECT_ROOT}/lib.pri)
diff --git a/dbcorelib_global.h b/dbcorelib_global.h
new file mode 100644
index 0000000..4c1dfa8
--- /dev/null
+++ b/dbcorelib_global.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <QtGlobal>
+
+#if defined(DBCORELIB_LIBRARY)
+#  define DBCORELIB_EXPORT Q_DECL_EXPORT
+#else
+#  define DBCORELIB_EXPORT Q_DECL_IMPORT
+#endif
diff --git a/fixedsizematrix.h b/fixedsizematrix.h
new file mode 100644
index 0000000..1353f87
--- /dev/null
+++ b/fixedsizematrix.h
@@ -0,0 +1,198 @@
+#pragma once
+
+#include <array>
+#include <assert.h>
+#include <algorithm>
+
+template<typename T, unsigned int width, unsigned int height>
+class FixedSizeMatrix
+{
+public:
+    explicit FixedSizeMatrix();
+    FixedSizeMatrix(const std::array<std::array<T, width>, height>& data);
+    FixedSizeMatrix(const FixedSizeMatrix<T, width, height> &other);
+
+    auto& operator=(const FixedSizeMatrix<T, width, height>& other);
+    auto& operator=(const std::array<std::array<T, width>, height>& data);
+
+    [[nodiscard]] auto operator==(const FixedSizeMatrix<T, width, height>& other) const;
+    [[nodiscard]] auto operator!=(const FixedSizeMatrix<T, width, height>& other) const;
+
+    [[nodiscard]] auto& operator()(unsigned int x, unsigned int y);
+    [[nodiscard]] const auto& operator()(unsigned int x, unsigned int y) const;
+
+    void rotateLeft();
+    void rotateRight();
+    void rotate180();
+    void mirrorHorizontally();
+    void mirrorVertically();
+
+    [[nodiscard]] auto asRotatedLeft() const;
+    [[nodiscard]] auto asRotatedRight() const;
+    [[nodiscard]] auto asRotated180() const;
+    [[nodiscard]] auto asMirroredHorizontally() const;
+    [[nodiscard]] auto asMirroredVertically() const;
+
+private:
+    std::array<std::array<T, width>, height> m_data;
+};
+
+template<typename T, unsigned int width, unsigned int height>
+FixedSizeMatrix<T, width, height>::FixedSizeMatrix() {}
+
+template<typename T, unsigned int width, unsigned int height>
+FixedSizeMatrix<T, width, height>::FixedSizeMatrix(const std::array<std::array<T, width>, height>& data) : m_data(data) {}
+
+template<typename T, unsigned int width, unsigned int height>
+FixedSizeMatrix<T, width, height>::FixedSizeMatrix(const FixedSizeMatrix<T, width, height>& other) : m_data(other.m_data) {}
+
+template<typename T, unsigned int width, unsigned int height>
+auto& FixedSizeMatrix<T, width, height>::operator=(const FixedSizeMatrix<T, width, height>& other)
+{
+    if(&other != this)
+        m_data = other.m_data;
+    return *this;
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto& FixedSizeMatrix<T, width, height>::operator=(const std::array<std::array<T, width>, height>& data)
+{
+    m_data = data;
+    return *this;
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::operator==(const FixedSizeMatrix<T, width, height>& other) const
+{
+    return m_data == other.m_data;
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::operator!=(const FixedSizeMatrix<T, width, height>& other) const
+{
+    return m_data != other.m_data;
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto& FixedSizeMatrix<T, width, height>::operator()(unsigned int x, unsigned int y)
+{
+    assert(x < width);
+    assert(y < height);
+    return m_data[y][x];
+}
+
+template<typename T, unsigned int width, unsigned int height>
+const auto& FixedSizeMatrix<T, width, height>::operator()(unsigned int x, unsigned int y) const
+{
+    assert(x < width);
+    assert(y < height);
+    return m_data[y][x];
+}
+
+template<typename T, unsigned int width, unsigned int height>
+void FixedSizeMatrix<T, width, height>::rotateLeft()
+{
+    static_assert(width == height, "Rotating in place only works when width matches height");
+
+    //TODO
+}
+
+template<typename T, unsigned int width, unsigned int height>
+void FixedSizeMatrix<T, width, height>::rotateRight()
+{
+    static_assert(width == height, "Rotating in place only works when width matches height");
+
+    //TODO
+}
+
+template<typename T, unsigned int width, unsigned int height>
+void FixedSizeMatrix<T, width, height>::rotate180()
+{
+    //for(unsigned int y = 0; y < height / 2; y++)
+    //    for(unsigned int x = 0; x < width; x++)
+    //        std::swap(m_data[height-y-1][width-x-1], m_data[y][x]);
+
+    mirrorHorizontally();
+    mirrorVertically();
+}
+
+template<typename T, unsigned int width, unsigned int height>
+void FixedSizeMatrix<T, width, height>::mirrorHorizontally()
+{
+    //for(unsigned int y = 0; y < height / 2; y++)
+    //    for(unsigned int x = 0; x < width; x++)
+    //        std::swap(m_data[height-y-1][x], m_data[y][x]);
+
+    std::reverse(std::begin(m_data), std::end(m_data));
+}
+
+template<typename T, unsigned int width, unsigned int height>
+void FixedSizeMatrix<T, width, height>::mirrorVertically()
+{
+    //for(unsigned int y = 0; y < height; y++)
+    //    for(unsigned int x = 0; x < width / 2; x++)
+    //        std::swap(m_data[y][width-x-1], m_data[y][x]);
+
+    for(unsigned int y = 0; y < height; y++)
+        std::reverse(std::begin(m_data[y]), std::end(m_data[y]));
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::asRotatedLeft() const
+{
+    std::array<std::array<T, height>, width> data;
+
+    for(unsigned int y = 0; y < height; y++)
+        for(unsigned int x = 0; x < width; x++)
+            data[width-x-1][y] = m_data[y][x];
+
+    return FixedSizeMatrix<T, height, width>(data);
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::asRotatedRight() const
+{
+    std::array<std::array<T, height>, width> data;
+
+    for(unsigned int y = 0; y < height; y++)
+        for(unsigned int x = 0; x < width; x++)
+            data[x][height-y-1] = m_data[y][x];
+
+    return FixedSizeMatrix<T, height, width>(data);
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::asRotated180() const
+{
+    std::array<std::array<T, width>, height> data;
+
+    for(unsigned int y = 0; y < height; y++)
+        for(unsigned int x = 0; x < width; x++)
+            data[height-y-1][width-x-1] = m_data[y][x];
+
+    return FixedSizeMatrix<T, width, height>(data);
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::asMirroredHorizontally() const
+{
+    std::array<std::array<T, width>, height> data;
+
+    for(unsigned int y = 0; y < height; y++)
+        for(unsigned int x = 0; x < width; x++)
+            data[height-y-1][x] = m_data[y][x];
+
+    return FixedSizeMatrix<T, width, height>(data);
+}
+
+template<typename T, unsigned int width, unsigned int height>
+auto FixedSizeMatrix<T, width, height>::asMirroredVertically() const
+{
+    std::array<std::array<T, width>, height> data;
+
+    for(unsigned int y = 0; y < height; y++)
+        for(unsigned int x = 0; x < width; x++)
+            data[y][width-x-1] = m_data[y][x];
+
+    return FixedSizeMatrix<T, width, height>(data);
+}