diff --git a/6.rkt b/6.rkt
new file mode 100644
index 0000000..ba6fa5a
--- /dev/null
+++ b/6.rkt
@@ -0,0 +1,23 @@
+#lang curly-fn racket
+
+(require "scripts/aoc.rkt")
+
+;; solution for day 6
+
+(define ((part marker-len) input)
+  (for*/first ([i (in-range marker-len (string-length input))]
+               [nxt (in-value (substring input (- i marker-len) i))]
+               #:when (= marker-len (set-count (list->set (string->list nxt)))))
+    i))
+
+(define part1 (part 4))
+(define part2 (part 14))
+
+(define (parse fname)
+  (string-trim (file->string fname)))
+
+(module+ main
+  (define input (parse "inputs/6"))
+  (answer 6 1 (time (part1 input)))
+  (answer 6 2 (time (part2 input)))
+  (displayln "meow"))
diff --git a/inputs/6 b/inputs/6
new file mode 100644
index 0000000..1e47e41
--- /dev/null
+++ b/inputs/6
@@ -0,0 +1 @@
+pwjwljjjvqjqjzqjqvvpgvpggmdgdrrzmzfzmzffzbbjnbjnjddsdpsdsgsgvsgvgmmzvvpspvspsdsbsbffhwhlwwzllftfhhrfrsrrnnngqgtglgfgtffnssrspsqppdvdtdwwpfpzffnpnddvsswjswjjhdjdrjrwwfpwfpfjppzwzvzpzrznzgzcgzgpgfpffwggtbbhsslzztpplltdtqtctrrszrzszpsprptrtgrtrzrvzrvzrrsfsbswsvvbdbjjgljjwqwgqwwtmwwnbbzdbdwwsnntztstbssnjssjmmldmmrrnfrfgfbbszzzlrrwzwtwwbrwrlwrwzwmwqmwwtqwwtvvdqdtqqfnfjnjsnslltcllvmmdmttvsszrsrwssdmdttdmdrmrsrvrllrhlltmlmlzmlzzhvhbbflfsslclpcczmmcjmjccpgprrgnrrzqqmgqggfvgffbsfsbfbttrgtrtptgtjtnnfbfmmrrcmcwwbbmwmvvvtppslsvvlsvswwztwztzqqpggdccmlldlplggrgddlrddvwvsswllsffbllsbbslshslswsllnqlqrqqpmqmtmqtmqtmmbwmbbzdbzbttvptvpvgpvggblbsspgppvmvsswfssfdfrdffpbfpprmrssmbbmggszslzlslblsldsldssjjsrjjjdfdjdtdmdnnncddpfddrjdjvjfvjffftmfmqqqqqfjjhssbzbbfjjmmzgzllphlplhlplfpfnpnsppjjqsshpssjdjzzwvvjfvfnfttmtbbgtgbbdpbbjppzcpzzvcvpvvdcvvcfvvfsvsccmhhrwrjjsrjrvrfvfwvvtftzztlztlthlhrhnnlpnllnmnfmffzpffhlhbhqbhqhfhwwlglnndgdwdswwgtwgtgsttpbprpqpnnbsnbsnszzrszsqzqlqggvhghrrvprvvvqnnmmrwrbrrmttwrrlmrrrddmsddbhdhdjhdhrhffppphghvvtztptjjlppcqcscjscstsmsbspsgpgqgmmndmdvvpnpnrrjtrthhtzzjlzzrwzrrfsfflrrmffhlhglhhhhvwwttlcttbqqzzbzzzbhbsscqqjggqpggqffbttrfrjjjqmmpttlvvqlvqqqtgtrtcrcbcnbbhfbfhbhqbhqbqvbvqvrqvvgttqwqpwqwnnpgngpphjppztptnnrssjqqrplzrvmwmbrbgbnggvzpmphqsrjrdhtslpmmwrhgcndwtbsbrfmsplzqswsnmrwdwwhzmpbqcmjfsmnwqnjmvdczhgmtfjwnjfdllfzdwpwgclpbdqtqnqqqvpthltznfzshhgrwwqclpplmdwtpjszrdwwzfbljcjmqmhptfhvcbvgfjfftbsfglwqldphdzzgcmvtsbhlsdncfjcsqrqrtdhttcwzlbqhvgppbrjfzdzwzprwpfflmdspcmqcbdhsvwjswwbzwnqrshbqfnmtdzrsrjgqngntllcgwjnmjqvtgwvttfqrcjlhbpcrszlngfmdgzprcdttgbjpcdzbhtdghpltcbvcddnslhqthfvzjtspqlzhdprhgtrlqqgtsqwwjqthgdwfgdfzhrnrwlrpqmgqltgldpjqgjzvngrphclbfftnwfnfvsvhftthptqfnvlftdpdhcrjdhfwtpwwvsblgntdwcpnsprhnpjtjsprdrdjwlhnmnzmmjmcdfsctzgmlqwwrwztjndqgpqrvdgplcnntqhfjlzjszpdwnvlwdzzgpzvplglgrmsjgjpmsrdsgzlfblgbgszgdtgsggqvhzmnfcnvlnzrfpqphctlcqccqzslmlsbbztnpncqpgscgdmmsgfwqrzpmbqrmfqsnnggswhmgmtmgdmhwthbgbdsrtnsrvdfdhlhhczgdsdqnpsgjzpbnsmgrvsfdjlhgjfjjwqnrnrbzdzcjlstclpqfnrflgnzbdbzvbjcbgqrrrlfcpgptcghhqqfsvsgljvjhdgdgcjtnrqsctmwhzbmbrfrsvndhfrtwlfgvqcbjsvttrctfshrggdvgbhthnwbwqglrvfbsqnbhdwgzhbccjnlhtcbjlpgrvttthnwvvspnzvqhjvmtwshcstdjhfqhqcgvwqwwwwrfdmnjhldsrhgmtjddsghdmdrpczbcjflmbhszctmvdttfrrqqpwslhvqbjlsrjdjrcqjrhwgjlsqmvdpvvvlbzwtthptpsggddcbqbhrvrpdtncvgndclhpngzgfqdqgwwbrjltjtqbpbtbzjmfmnjnlqmtzvdqdwqhbgptplrgdsfpjzfrpdcdsznwffpnzsmpqjfbcpddqjgfqhqbwsfmzgstfdnzhphhvgbzvjrlmqmrznpctftcmbtdpbfbfpfpjtjhbcrrssnlvtrtnzvwtjwplclpqndpfstjmghmzsllhntprtjwlppjnjgjzlvlcbcwjvrjqjhfnnpmwlpngwtvvbcllmjzqfrwvtvsrvbcpfwcdfwmdwvztwtbrgvlvmfjmpzdzmfbcmrsqfwqjfjfrgmnblnzfzcvgwllvmqfmdlqqgvvjrptlrjcwphvchwhmtwhnlnjprqhlrhmdfptvpshjbzrhptvnqfvjfjcnglnbfhbwghqqjbqzdthjwqzznwfsmqmbsqnwrdrrwjgzjdmgtsqswlqcpshdmcfjttpszqmsjhgfsrvgchgwzbqgbdqhmbndmnmwjsnjjvmtpprbtlwzpvfdnbtjnzzvlwndgbhgwbpllvfghwvwjmlpnzfjzjwwmtvbbfndppbqwhjlwgtswmgffddbhnwqljvgcvfnqmzgvfmjwsbcrpgtcpchlblccgpgpmddsjsfwbnvnsfttnsqjshchdztvsbjwsfmszfwpwsmgzvvcfddtczvvmnhgjffrsfqzfmphpfblmwgcbbrjqzdztzzzjhqmjzrgmwgrqdfqdbjsgwfndqgnmdvjlwdtjpjtpcqlhtcfvnmzjswldrbqjpmrlqwhvnqjshbqqvzwwsdjmspgbvrgvpjjnwsvnvnppvlnqbdllfczjjftpnlrjfvcwgwbdmldtcnczqzcptjjrgglnnbgmrdffgmnnwvjzwbgcncnhzmthswrdsrhchprrrrnhjfnzmsgfjltqzmttvhslnsgcjfgqwcsddfstcstspcpdbznvdrnqhwqsfgqtdbtwspfswfjbzgtqjpvzfhfdblszblmgrmmlwvnwwdsdjjvrsfjfjltcsfccplftvpltqshgnpnqlqcglrhvzldptspnbvjcchnnvzvbbqnnnbnggrhpcgqtgnjdqplswtblgtwqzmltjjhpdttgbcvhfrsdcgjzswvtbbhrpnzmrjhgznbdpqgqdhwcnmgflpdtbzdbvzvslbvvwdpcnwjtvjhgncnljfwlrvqgdrjhdcprsqjrmwwlcrrvsjtlmqmjtcbqwcbmgnvfshdgmmfffzvwjphjfspvdzjsqdlgqfdjwwshdcssqvvgdcvvtmwlfjdvtfllrvltmrsgpdtdqsfjpcvjnqszpnbqqlnpdvhtswbgwnpcqpgzqwlgsmlnlngcdmqhchcdgfmrhfwwrgrrdrhcsbbcrhghdjrcsltchqghvmbvbbpqzqbgwmqrgwchhbvdsqbqrfcbzwjrlqtnmghtjbtjdpngcjzswfmjfphjnftbhdgvwjsvqfbsfgqhfbcrgrsppsvbnpwlhsdrffcmmgzpjfsvllcrbtwrwddthfjvjndzfzbcmglhbzpzwwbtzdpdlwrnbzqjbqwpbdlwfddbtzjhqshmcghqfcrzrmrtmqwpqhvqzbfwhbssgjcmzqcpvnntbpfqwhbmtjdtbtrrdhsvzqjltdshtlvwwmlbdzlvjhmtppnbqcjnncpslcggsjbrmzvdgqzclwszgzfqthndnjfjrznlmmtjwwhnzvhnjncccpczrftvhtdhjbzvwvlgqhdnfqdqrhctfffpcnqzdrgqqzcczdjvpzqfgfcpjzqhbwshsqhvqzpsb