diff --git a/src/days/day08.zig b/src/days/day08.zig
index 20383ea..89082c4 100644
--- a/src/days/day08.zig
+++ b/src/days/day08.zig
@@ -1,7 +1,142 @@
 const std = @import("std");
 
-pub const title = "Day 08";
+pub const title = "Day 08: Playground";
 
-pub fn run(_: std.mem.Allocator) !void {
+pub fn run(allocator: std.mem.Allocator) !void {
+    //const input = @embedFile("./input/day08.txt");
+    const input =
+        \\162,817,812
+        \\57,618,57
+        \\906,360,560
+        \\592,479,940
+        \\352,342,300
+        \\466,668,158
+        \\542,29,236
+        \\431,825,988
+        \\739,650,466
+        \\52,470,668
+        \\216,146,977
+        \\819,987,18
+        \\117,168,530
+        \\805,96,715
+        \\346,949,466
+        \\970,615,88
+        \\941,993,340
+        \\862,61,35
+        \\984,92,344
+        \\425,690,689
+        ;
+
+    var lines = std.mem.tokenizeScalar(u8, input, '\n');
+
+    var junction_boxes: std.ArrayList(JunctionBox) = .empty;
+    defer junction_boxes.deinit(allocator);
+
+    var junction_box_index: usize = 0;
+    while (lines.next()) |line| {
+        defer junction_box_index += 1;
+
+        var coordinates = std.mem.tokenizeScalar(u8, line, ',');
+        const x = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const y = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const z = blk: {
+            const s = coordinates.next() orelse continue;
+            break :blk try std.fmt.parseUnsigned(u32, s, 10);
+        };
+        const junction_box = JunctionBox{
+            .index = junction_box_index,
+            .position = .{ .x = x, .y = y, .z = z },
+        };
+        try junction_boxes.append(allocator, junction_box);
+    }
+
+    var network_id: usize = 0;
+    while (true) {
+        var shortest_distance: ?u32 = null;
+        var a: ?*JunctionBox = null;
+        var b: ?*JunctionBox = null;
+        for (junction_boxes.items, 0..) |*junction_box, i| {
+            for (junction_boxes.items[i + 1..]) |*other_junction_box| {
+                if (junction_box.network != null and other_junction_box.network != null) {
+                    if (junction_box.network == other_junction_box.network) continue;
+                }
+
+                const distance = junction_box.position.distance(other_junction_box.position);
+                if (shortest_distance == null or distance < shortest_distance.?) {
+                    shortest_distance = distance;
+                    a = junction_box;
+                    b = other_junction_box;
+                }
+            }
+        }
+
+        std.debug.print("shortest distance = {?d} between {?f} and {?f}\n", .{shortest_distance, a, b});
+
+        if (a != null and b != null) {
+            if (a.?.network != null and b.?.network == null) {
+                std.debug.print("assigning network {?d} to {?f}\n", .{a.?.network, b});
+                b.?.network = a.?.network;
+            } else if (b.?.network != null and a.?.network == null) {
+                std.debug.print("assigning network {?d} to {?f}\n", .{b.?.network, a});
+                a.?.network = b.?.network;
+            } else {
+                std.debug.print("assigning network {d} to {?f} and {?f}\n", .{network_id, a, b});
+                a.?.network = network_id;
+                b.?.network = network_id;
+                network_id += 1;
+            }
+        } else if (a) |junction_box| {
+            junction_box.network = network_id;
+            network_id += 1;
+        } else if (b) |junction_box| {
+            junction_box.network = network_id;
+            network_id += 1;
+        }
+
+        if (network_id >= 20) {
+            break;
+        }
+    }
+
+    for (junction_boxes.items) |junction_box| {
+        std.debug.print("{f}\n", .{junction_box});
+    }
 }
 
+const JunctionBox = struct {
+    index: usize,
+    network: ?usize = null,
+    position: Position,
+
+    const Self = @This();
+
+    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
+        try w.print("{d} in network {?d} at {f}", .{self.index, self.network, self.position});
+    }
+};
+
+const Position = struct {
+    x: u32,
+    y: u32,
+    z: u32,
+
+    const Self = @This();
+
+    pub fn format(self: Self, w: *std.io.Writer) std.io.Writer.Error!void {
+        try w.print("{d}, {d}, {d}", .{self.x, self.y, self.z});
+    }
+
+    pub fn distance(self: Self, other: Self) u32 {
+        const xds = std.math.pow(u32, @max(self.x, other.x) - @min(self.x, other.x), 2);
+        const yds = std.math.pow(u32, @max(self.y, other.y) - @min(self.y, other.y), 2);
+        const zds = std.math.pow(u32, @max(self.z, other.z) - @min(self.z, other.z), 2);
+        return std.math.sqrt(xds + yds + zds);
+    }
+};
+
diff --git a/src/days/input/day08.txt b/src/days/input/day08.txt
new file mode 100755
index 0000000..300a2da
--- /dev/null
+++ b/src/days/input/day08.txt
@@ -0,0 +1,1000 @@
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