Index: apps/plugins/sudoku/sudoku.h
===================================================================
--- apps/plugins/sudoku/sudoku.h	(revision 16019)
+++ apps/plugins/sudoku/sudoku.h	(working copy)
@@ -76,7 +76,7 @@
 #define SUDOKU_BUTTON_MENU       BUTTON_MENU
 #define SUDOKU_BUTTON_LEFT       BUTTON_SCROLL_BACK
 #define SUDOKU_BUTTON_RIGHT      BUTTON_SCROLL_FWD
-#define SUDOKU_BUTTON_ALTTOGGLE  BUTTON_SELECT
+#define SUDOKU_BUTTON_CHANGEDIR  BUTTON_SELECT
 #define SUDOKU_BUTTON_TOGGLE     BUTTON_RIGHT
 #define SUDOKU_BUTTON_TOGGLEBACK BUTTON_LEFT
 #define SUDOKU_BUTTON_POSSIBLE   BUTTON_PLAY
Index: apps/plugins/sudoku/sudoku.c
===================================================================
--- apps/plugins/sudoku/sudoku.c	(revision 16019)
+++ apps/plugins/sudoku/sudoku.c	(working copy)
@@ -180,6 +180,12 @@
 
 #endif /* Layout */
 
+#ifdef SUDOKU_BUTTON_CHANGEDIR
+int invertdir=0;
+#else
+#define invertdir 0
+#endif
+
 #define CFGFILE_VERSION 0     /* Current config file version */
 #define CFGFILE_MINVERSION 0  /* Minimum config file version to accept */
 
@@ -1328,36 +1334,52 @@
                 /* move cursor left */
             case SUDOKU_BUTTON_LEFT:
             case (SUDOKU_BUTTON_LEFT | BUTTON_REPEAT):
-                if (state.x==0) {
+                if ( (state.x==0&&invertdir==0) || (state.y==0&&invertdir==1) ) {
 #ifndef SUDOKU_BUTTON_UP
-                    if (state.y==0) {
+                    if ( (state.y==0&&invertdir==0) || (state.x==0&&invertdir==1)) {
                         move_cursor(&state,8,8);
-                    } else { 
-                        move_cursor(&state,8,state.y-1);
+                    } else {
+                        if (invertdir==0) {
+                            move_cursor(&state,8,state.y-1);
+                        } else {
+                            move_cursor(&state,state.x-1,8);
+                        }
                     }
 #else
                     move_cursor(&state,8,state.y);
 #endif
-                } else { 
-                    move_cursor(&state,state.x-1,state.y);
+                } else {
+                    if (invertdir==0) {
+                        move_cursor(&state,state.x-1,state.y);
+                    } else {
+                        move_cursor(&state,state.x,state.y-1);
+                    }
                 }
                 break;
                 
                 /* move cursor right */
             case SUDOKU_BUTTON_RIGHT:
             case (SUDOKU_BUTTON_RIGHT | BUTTON_REPEAT):
-                if (state.x==8) {
+                if ( (state.x==8&&invertdir==0) || (state.y==8&&invertdir==1) ) {
 #ifndef SUDOKU_BUTTON_DOWN
-                    if (state.y==8) {
+                    if ( (state.y==8&&invertdir==0) || (state.x==8&&invertdir==1) ) {
                         move_cursor(&state,0,0);
-                    } else { 
-                        move_cursor(&state,0,state.y+1);
+                    } else {
+                        if (invertdir==0) {
+                            move_cursor(&state,0,state.y+1);
+                        } else {
+                            move_cursor(&state,state.x+1,0);
+                        }
                     }
 #else
                     move_cursor(&state,0,state.y);
 #endif
-                } else { 
-                    move_cursor(&state,state.x+1,state.y);
+                } else {
+                    if (invertdir==0) {
+                        move_cursor(&state,state.x+1,state.y);
+                    } else {
+                        move_cursor(&state,state.x,state.y+1);
+                    }
                 }
                 break;
 
@@ -1421,6 +1443,13 @@
                 }
                 break;
 #endif
+
+#ifdef SUDOKU_BUTTON_CHANGEDIR
+            case SUDOKU_BUTTON_CHANGEDIR:
+                /* Change scroll wheel direction */
+                invertdir=!invertdir;
+                break;
+#endif
             default:
                 if (rb->default_event_handler(button) == SYS_USB_CONNECTED) {
                     /* Quit if USB has been connected */