diff --git a/lpst.pl b/lpst.pl
index 7990b45..a1ca691 100644
--- a/lpst.pl
+++ b/lpst.pl
@@ -13,7 +13,8 @@ my $HEX_1 = '-/--\-';
 my $HEX_2 = '| __ |';
 my $HEX_3 = '|    |';
 
-my $SHADE_CHR = chr(0x2592);
+my $XBOX_CHR = chr(0x2573);
+my $SHADE_CHR = chr(0x2591);
 my $ALT_US = chr(0x2017);
 my $ALT_PIPE = chr(0x2016);
 
@@ -82,7 +83,15 @@ my %AXIS_RV = map {
 #   -1 -1     
 #
 
-# [Row mvoe, Diag move]
+# ODD
+# UP: 0, +1
+# DOWN: -1, -1
+
+# EVEN
+# UP: +1, +1
+# DOWN: +0, -1
+
+# [Row move, Diag move]
 
 my %MOVE = (
     $MG_A => [
@@ -407,6 +416,16 @@ sub disp_board(){
     printf("%s", $b);
 }
 
+
+
+
+
+
+
+
+
+
+
 sub cell_index_rev($$){
     return $AXIS_RV{$_[0]}.$_[1];
 }
@@ -416,6 +435,49 @@ sub cell_index($){
     return ($AXIS{$chr1}, $chr2);
 }
 
+sub apply_shift($$){
+    my ($not, $my_shift) = (shift, shift);
+    my $r0;
+    my $c0;
+
+    ($r0, $c0) = cell_index($not);
+
+    $r0 += $my_shift->[0];
+    $c0 += $my_shift->[1];
+    die "cell index [$r0, $c0]: out of bound exception" if $r0 > 11 or $c0 > 11 or $r0 < 1 or $c0 < 1;
+    return cell_index_rev($r0, $c0);
+}
+
+sub calc_move($$){
+    my ($not, $mov) = (shift, shift);
+    my $r0;
+    my $c0;
+    
+    my $x_shift;
+    my $y_shift;
+
+    my $n0;
+    my $ni;
+    
+    ($r0, $c0) = cell_index($not);
+
+    # Calc y_shift
+    $y_shift = $mov->[1];
+    
+    # Calc x_shift
+    $x_shift = $mov->[0];
+    
+    # make adjustment
+    $ni = ($y_shift / ($y_shift * -1));
+    $ni *= -1;
+    
+    $n0 = ($r0 + 1) % 2;
+    
+    $x_shift += int(($y_shift + ($n0 * $ni)) / 2);
+    
+    return apply_shift($not, [$x_shift, $y_shift]);
+}
+
 
 # Main starts here!
 binmode(STDOUT, ":utf8");
@@ -432,10 +494,13 @@ binmode(STDOUT, ":utf8");
     $AXIS_RV{$_}
 }(1...11);
 
-$board{"F5"} = $P1.$DIV.$MG_QS;
+my $m1 = "F4";
+my $c1 = $MG_A;
 
+$board{$m1} = $P1.$DIV.$c;
 
+for my $mv in $MOVE{}
+printf("%s\n", calc_move($m1, [-2,-2]));
+# printf("%s\n", calc_move($m1, [-6,6]));
 disp_board();
 
-# disp_0("C1");
-# printf(">>%s, %s\n", cell_index("C1"));