diff --git a/input/14.txt b/input/14.txt
new file mode 100644
index 0000000..85a855c
--- /dev/null
+++ b/input/14.txt
@@ -0,0 +1,147 @@
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+488,59 -> 488,51 -> 488,59 -> 490,59 -> 490,52 -> 490,59 -> 492,59 -> 492,55 -> 492,59 -> 494,59 -> 494,52 -> 494,59 -> 496,59 -> 496,50 -> 496,59 -> 498,59 -> 498,58 -> 498,59 -> 500,59 -> 500,56 -> 500,59 -> 502,59 -> 502,56 -> 502,59 -> 504,59 -> 504,57 -> 504,59
+541,152 -> 546,152
+523,136 -> 523,138 -> 518,138 -> 518,145 -> 535,145 -> 535,138 -> 528,138 -> 528,136
diff --git a/src/14.rkt b/src/14.rkt
new file mode 100644
index 0000000..b316f8f
--- /dev/null
+++ b/src/14.rkt
@@ -0,0 +1,85 @@
+#lang curly-fn racket
+
+(require "../lib.rkt")
+
+(define input
+  (for/list ([line (problem-input 14)])
+    (for/list ([coord (string-split line " -> ")])
+      (for/list ([xy (string-split coord ",")])
+        (string->number xy)))))
+
+(define ymax
+  (let ([ys (map second (apply append input))])
+    (maximum ys)))
+
+(define cave
+  (let ([cave (make-hash)])
+    (hash-set! cave `(500 0) #\▲)
+    (for ([line input])
+      (for/fold ([prev (first line)])
+                ([next (rest line)])
+        (match (list prev next)
+          [`((,x ,y1) (,x ,y2))
+           #:when (<= y1 y2)
+           (for ([y (in-inclusive-range y1 y2)])
+             (hash-set! cave `(,x ,y) #\▉))]
+          [`((,x ,y1) (,x ,y2))
+           #:when (<= y2 y1)
+           (for ([y (in-inclusive-range y2 y1)])
+             (hash-set! cave `(,x ,y) #\▉))]
+          [`((,x1 ,y) (,x2 ,y))
+           #:when (<= x1 x2)
+           (for ([x (in-inclusive-range x1 x2)])
+             (hash-set! cave `(,x ,y) #\▉))]
+          [`((,x1 ,y) (,x2 ,y))
+           #:when (<= x2 x1)
+           (for ([x (in-inclusive-range x2 x1)])
+             (hash-set! cave `(,x ,y) #\▉))])
+        next))
+    cave))
+
+(define (show)
+  (define-values (xmin xmax)
+    (let ([xs (map first (hash-keys cave))])
+      (values (minimum xs) (maximum xs))))
+  (for ([y (in-inclusive-range 0 ymax)])
+    (for ([x (in-inclusive-range xmin xmax)])
+      (display (or (hash-ref cave `(,x ,y) #f) #\ )))
+    (newline)))
+
+(define (count-sand)
+  (count #{eq? #\░ %} (hash-values cave)))
+
+(define (unblocked? x y)
+  (define tile (hash-ref cave `(,x ,y) #f))
+  (and (not (or (eq? #\▉ tile)
+                (eq? #\░ tile)))
+       (< y (+ ymax 2))))
+
+(define (fall1)
+  (let loop ([x 500] [y 0])
+    (cond
+      [(> y ymax) #f]
+      [(unblocked? x (add1 y)) (loop x (add1 y))]
+      [(unblocked? (sub1 x) (add1 y)) (loop (sub1 x) (add1 y))]
+      [(unblocked? (add1 x) (add1 y)) (loop (add1 x) (add1 y))]
+      [else (hash-set! cave `(,x ,y) #\░)])))
+
+(define (fall2)
+  (let loop ([x 500] [y 0])
+    (cond
+      [(unblocked? x (add1 y)) (loop x (add1 y))]
+      [(unblocked? (sub1 x) (add1 y)) (loop (sub1 x) (add1 y))]
+      [(unblocked? (add1 x) (add1 y)) (loop (add1 x) (add1 y))]
+      [(and (= x 500) (= y 0)) (hash-set! cave `(,x ,y) #\░) #f]
+      [else (hash-set! cave `(,x ,y) #\░)])))
+
+(define part1
+  (let loop ()
+    (if (fall1) (loop) (count-sand))))
+
+(define part2
+  (let loop ()
+    (if (fall2) (loop) (count-sand))))
+
+(show-solution part1 part2)
\ No newline at end of file