diff --git a/2024/day-15/solution-2.sh b/2024/day-15/solution-2.sh
new file mode 100644
index 0000000..0dfc5a6
--- /dev/null
+++ b/2024/day-15/solution-2.sh
@@ -0,0 +1,290 @@
+#!/usr/bin/env bash
+
+FUNCNEST=99999
+MAP_FILE=input-map
+DIRECTIONS_FILE=input-movements
+MAP_WIDTH=$(( ( $( head -1 "$MAP_FILE" | wc -c ) -1 ) * 2 ))
+MAP_HEIGHT=$( < "$MAP_FILE" wc -l )
+
+# Move the robot
+move_robot() {
+  MAP_ARRAY[ROBOT_POSITION]=.
+  ROBOT_POSITION=$NEXT_POSITION
+  MAP_ARRAY[ROBOT_POSITION]=@
+}
+
+# Function to move box in n direction
+vertical_move_box () {
+  local BOX_COORDINATE=$1
+  local BOX_MOVE_DIRECTION=$2
+
+  # Normalise coordinates
+  if [[ ${MAP_ARRAY[$BOX_COORDINATE]} == "[" ]]
+  then
+    local L_SIDE=$BOX_COORDINATE
+    local R_SIDE=$(( BOX_COORDINATE +1 ))
+  elif [[ ${MAP_ARRAY[$BOX_COORDINATE]} == "]" ]]
+  then
+    local L_SIDE=$(( BOX_COORDINATE -1 ))
+    local R_SIDE=$BOX_COORDINATE
+  fi
+  local L_SIDE_MOVE_COORDINATE=$(( L_SIDE + BOX_MOVE_DIRECTION ))
+  local R_SIDE_MOVE_COORDINATE=$(( R_SIDE + BOX_MOVE_DIRECTION ))
+
+  # Recurse if there are more boxes
+  if [[ ${MAP_ARRAY[L_SIDE_MOVE_COORDINATE]} == "[" ]] || \
+     [[ ${MAP_ARRAY[L_SIDE_MOVE_COORDINATE]} == "]" ]]
+  then
+    vertical_move_box "$L_SIDE_MOVE_COORDINATE" "$BOX_MOVE_DIRECTION"
+  fi
+  if [[ ${MAP_ARRAY[R_SIDE_MOVE_COORDINATE]} == "[" ]] || \
+     [[ ${MAP_ARRAY[R_SIDE_MOVE_COORDINATE]} == "]" ]]
+  then
+    vertical_move_box "$R_SIDE_MOVE_COORDINATE" "$BOX_MOVE_DIRECTION"
+  fi
+
+  MAP_ARRAY[L_SIDE_MOVE_COORDINATE]="["
+  MAP_ARRAY[R_SIDE_MOVE_COORDINATE]="]"
+  MAP_ARRAY[L_SIDE]="."
+  MAP_ARRAY[R_SIDE]="."
+}
+
+
+# Function to check if box can be moved in n direction
+vertical_check_move_box () {
+  local BOX_COORDINATE=$1
+  local BOX_MOVE_DIRECTION=$2
+
+  # Normalise coordinates
+  if [[ ${MAP_ARRAY[$BOX_COORDINATE]} == "[" ]]
+  then
+    local L_SIDE=$BOX_COORDINATE
+    local R_SIDE=$(( BOX_COORDINATE +1 ))
+  elif [[ ${MAP_ARRAY[$BOX_COORDINATE]} == "]" ]]
+  then
+    L_SIDE=$(( BOX_COORDINATE -1 ))
+    R_SIDE=$BOX_COORDINATE
+  fi
+
+  # Check if boxes are movable
+  local L_SIDE_MOVE_COORDINATE=$(( L_SIDE + BOX_MOVE_DIRECTION ))
+  local R_SIDE_MOVE_COORDINATE=$(( R_SIDE + BOX_MOVE_DIRECTION ))
+  if [[ ${MAP_ARRAY[$L_SIDE_MOVE_COORDINATE]} == '.' ]] && \
+     [[ ${MAP_ARRAY[$R_SIDE_MOVE_COORDINATE]} == '.' ]] # Can move
+  then
+    return 0
+  elif [[ ${MAP_ARRAY[$L_SIDE_MOVE_COORDINATE]} == '#' ]] || \
+       [[ ${MAP_ARRAY[$R_SIDE_MOVE_COORDINATE]} == '#' ]] # Blocked by wall
+  then
+    return 1
+  fi
+
+  # Recurse if there are more boxes
+  if [[ ${MAP_ARRAY[L_SIDE_MOVE_COORDINATE]} == "[" ]] || \
+     [[ ${MAP_ARRAY[L_SIDE_MOVE_COORDINATE]} == "]" ]]
+  then
+    vertical_check_move_box "$L_SIDE_MOVE_COORDINATE" "$BOX_MOVE_DIRECTION"
+    if [[ $? -eq 1 ]]
+    then
+      return 1
+    fi
+  fi
+  if [[ ${MAP_ARRAY[R_SIDE_MOVE_COORDINATE]} == "[" ]] || \
+     [[ ${MAP_ARRAY[R_SIDE_MOVE_COORDINATE]} == "]" ]]
+  then
+    vertical_check_move_box "$R_SIDE_MOVE_COORDINATE" "$BOX_MOVE_DIRECTION"
+    if [[ $? -eq 1 ]]
+    then
+      return 1
+    fi
+  fi
+}
+
+horizontal_move_box () {
+
+  local BOX_COOR=$1
+  local BOX_MOVE_DIRECTION=$2
+
+  local NEXT_SPOT=$(( BOX_COOR + BOX_MOVE_DIRECTION * 2 ))
+  if [[ ${MAP_ARRAY[$NEXT_SPOT]} == "#" ]]
+  then
+    return 1 # Failed to move box
+  elif [[ ${MAP_ARRAY[$NEXT_SPOT]} == "[" ]] || \
+       [[ ${MAP_ARRAY[$NEXT_SPOT]} == "]" ]]
+  then
+    horizontal_move_box "$NEXT_SPOT" "$BOX_MOVE_DIRECTION"
+    if [[ $? -eq 1 ]] ; then return 1 ; fi
+  elif [[ ${MAP_ARRAY[$NEXT_SPOT]} != "." ]]
+  then
+    return 1
+  fi
+
+  # Move the box
+  if [[ $NEXT_SPOT -lt $(( BOX_COOR + BOX_MOVE_DIRECTION )) ]]
+  then
+    MAP_ARRAY[NEXT_SPOT]="["
+    MAP_ARRAY[BOX_COOR + BOX_MOVE_DIRECTION]="]"
+  else
+    MAP_ARRAY[BOX_COOR + BOX_MOVE_DIRECTION]="["
+    MAP_ARRAY[NEXT_SPOT]="]"
+  fi
+  MAP_ARRAY[BOX_COOR]="."
+}
+
+# Load map
+read -r -a TEST_ARRAY <<< "$( 
+  < "$MAP_FILE" paste -s -d "" | 
+  sed -E '
+    s/#/##/g; 
+    s/\./../g; 
+    s/@/@./g; 
+    s/O/[]/g; 
+    s/(.)(.)/\1 \2 /g' 
+)"
+read -r -a MAP_ARRAY <<< "$( 
+  < "$MAP_FILE" paste -s -d "" | 
+  sed -E '
+    s/#/##/g; 
+    s/\./../g; 
+    s/@/@./g; 
+    s/O/[]/g; 
+    s/(.)(.)/\1 \2 /g' 
+)"
+MAP_LEN=${#MAP_ARRAY[@]}
+
+print_map () {
+  printf "%s " "${MAP_ARRAY[@]}" | 
+    fold -w $(( MAP_WIDTH * 2 ))
+  printf "\n"
+}
+
+# Count boxes
+#BOX_COUNT=0
+#for (( i=0; i<MAP_LEN; i++ ))
+#do
+#  if [[ ${MAP_ARRAY[$i]} == "[" ]]
+#  then
+#    (( BOX_COUNT++ ))
+#  fi
+#done
+#printf "Box count: %s\n" "$BOX_COUNT"
+
+# Get robot position
+for (( i=0; i<MAP_LEN; i++ ))
+do
+  if [[ ${MAP_ARRAY[$i]} == "@" ]]
+  then
+    ROBOT_POSITION=$i
+    break
+  fi
+done
+printf "Robot position : %s\n" "$ROBOT_POSITION"
+
+# Hardcode direction values
+UP=$(( - MAP_WIDTH ))
+DOWN=$MAP_WIDTH
+LEFT=-1
+RIGHT=1
+
+# Iterate through directions
+MOVES=0
+print_map
+while read -r DIRECTION
+do
+
+  # Interpret directions
+  if [[ $DIRECTION == "^" ]]
+  then
+    DIRECTION_VALUE=$UP
+  elif [[ $DIRECTION == "v" ]]
+  then
+    DIRECTION_VALUE=$DOWN
+  elif [[ $DIRECTION == "<" ]]
+  then
+    DIRECTION_VALUE=$LEFT
+  elif [[ $DIRECTION == ">" ]]
+  then
+    DIRECTION_VALUE=$RIGHT
+  fi
+
+  NEXT_POSITION=$(( ROBOT_POSITION + DIRECTION_VALUE ))
+
+  # Box in front
+  if [[ ${MAP_ARRAY[$NEXT_POSITION]} == "[" ]] || \
+     [[ ${MAP_ARRAY[$NEXT_POSITION]} == "]" ]]
+  then
+    #printf "Hit box.\n"
+    if [[ $DIRECTION_VALUE -eq $LEFT ]] || \
+       [[ $DIRECTION_VALUE -eq $RIGHT ]]
+    then
+      #printf "Left right box movement.\n"
+      if horizontal_move_box "$NEXT_POSITION" "$DIRECTION_VALUE"
+      then
+        move_robot
+      fi
+    elif [[ $DIRECTION_VALUE -eq $UP ]] || \
+         [[ $DIRECTION_VALUE -eq $DOWN ]]
+    then
+      #printf "Up down box movement.\n"
+      if vertical_check_move_box "$NEXT_POSITION" "$DIRECTION_VALUE"
+      then
+        vertical_move_box "$NEXT_POSITION" "$DIRECTION_VALUE"
+        move_robot
+      fi
+    fi
+
+  # Wall in front, do nothing
+  elif [[ ${MAP_ARRAY[$NEXT_POSITION]} == "#" ]]
+  then
+    #printf "Next: %s Skipping\n" "${MAP_ARRAY[$NEXT_POSITION]}"
+    :
+  # Empty space, move forward
+  elif [[ ${MAP_ARRAY[$NEXT_POSITION]} == "." ]]
+  then
+    #printf "Next: %s Move robot forward\n" "${MAP_ARRAY[$NEXT_POSITION]}"
+    move_robot
+  fi
+  (( MOVES++ ))
+
+  #print_map
+done <<< "$( < "$DIRECTIONS_FILE" paste -s -d "" | sed -E 's/(.)(.)/\1 \2 /g' | tr ' ' '\n' )"
+printf "Moves: %s\n" "$MOVES"
+
+print_map
+
+# Calculate GPS values for boxes
+SUM=0
+BOX_COUNT=0
+for (( i=0; i<MAP_LEN; i++ ))
+do
+  if [[ ${MAP_ARRAY[i]} == "[" ]]
+  then
+    (( BOX_COUNT++ ))
+    #X_L=$(( i % MAP_WIDTH ))
+    #X_R=$(( MAP_WIDTH - (i % MAP_WIDTH ) -1 ))
+    #Y_T=$(( i / MAP_WIDTH * 100 ))
+    #Y_B=$(( ( MAP_HEIGHT -  i / MAP_WIDTH ) * 100 ))
+    #X=$(( X_R > X_L ? X_L : X_R ))
+    #Y=$(( Y_T > Y_B ? Y_B : Y_T ))
+    X=$(( i % MAP_WIDTH ))
+    Y=$(( i / MAP_WIDTH * 100 ))
+    GPS=$(( X + Y ))
+    #printf "Box %s X: %s Y: %s GPS: %s\n" "$i" "$X" "$Y" "$GPS"
+    #if [[ $GPS -lt 0 ]] ; then printf "Negative GPS: %s for box %s\n" "$GPS" "$i"; continue; fi
+    (( SUM+=GPS ))
+  fi
+done
+printf "Sum: %s\n" "$SUM"
+printf "Box count: %s\n" "$BOX_COUNT"
+
+# Compare and test if walls have moved
+for (( i=0; i<MAP_LEN; i++ ))
+do
+  if [[ ${TEST_ARRAY[i]} == "#" ]]
+  then
+    if [[ ${TEST_ARRAY[i]} != "${MAP_ARRAY[i]}" ]]
+    then
+    printf "Index %s Wall changed.\n" "$i"
+    fi
+  fi
+done