diff --git a/days6-10/day6/day6_part1.py b/days6-10/day6/day6_part1.py
new file mode 100644
index 0000000..c803865
--- /dev/null
+++ b/days6-10/day6/day6_part1.py
@@ -0,0 +1,3 @@
+with open('input.txt', 'r') as f:
+    stream = f.read()
+print([i+4 for i in range(len(stream)) if i < (len(stream)-4) and stream[i] not in stream[i + 1:i + 4] and stream[i + 1] not in stream[i + 2:i + 4] and stream[i + 2] != stream[i + 3]][0])
diff --git a/days6-10/day6/day6_part2.py b/days6-10/day6/day6_part2.py
new file mode 100644
index 0000000..055b9ec
--- /dev/null
+++ b/days6-10/day6/day6_part2.py
@@ -0,0 +1,21 @@
+def main():
+    with open('input.txt', 'r') as f:
+        stream = f.read()
+
+    for i in range(len(stream)):
+        if validate(stream[i:i+14]):
+            print(i+14)
+            return
+    print('No valid marker')
+
+
+def validate(part_string: str) -> bool:
+    for i in range(len(part_string)):
+        for j in range(len(part_string)):
+            if i != j and part_string[i] == part_string[j]:
+                return False
+    return True
+
+
+if __name__ == "__main__":
+    main()
diff --git a/days6-10/day6/input.txt b/days6-10/day6/input.txt
new file mode 100644
index 0000000..a7ce5f7
--- /dev/null
+++ b/days6-10/day6/input.txt
@@ -0,0 +1 @@
+tzltzltthfthtdtstftbfbnffdjjvnvcccnznpndppsvvlnvlnvndntnllwffvwwcpwccssqbqnbbwzbwwfjjscspspfsfvvzjvvmjvjwjljbbbqtbbcqbccdqcdcpddnvnjvvqwwbrbggjllhbbzlblrrrcwwrfrmffgddfsddnqnqpnnmzzwlzwzqwqgqnngnfnvnhvvfnvvszzrbrqbqnbbrsbsvssgngwgqwqbqsbsvbbdvdfvdvbbqlqdlqdllnppwcclwlvwlwjlwwdjjjcschhhmrrnnrznzlnnwmnwnfngghngnpggmrrzrttdbdtddjhdhrrqddnhnjjntjtbtmtffwcfcnfcnfnjjfnjfjjhrhhgfgttgmttltfllfqfnqqcbbrlblrbrcrssrllhddmnddmcdddvttfdfqfmqqcncggczczdccvhcvcjvvgnnqttltcchzhjjwmmqvqtqnqbbhddcqdccnwccttgwwzssncncjjprjjpbprrndnrnrhnhrnhngnhhbjbccpmpmrppjvpjpqjjsvjjhttcclmmqzzlggtqqqgdqqbhhtmmqfmqmwmjwmjmmnsmsvsrrvpvhhtshhhmqmdqqqqlfffwgwhwjjrfjfmfrmffgzzjvzznqqwggcvcnvvcpvpjpjbpbrpbrrzhhcffqqlzzrmzrmzmzrrqdqrqnqrnrnqnrnsrrnjrrgllgqlljldjjmvvqbqhhsmsmddsfdddcmmphhtjhjzhjjjhcjjzppwhwvvdnvnvpnvnlnvnffrjjtzzdqzzngzgqghhmvvgwwqhwhlhvvfzzdpzddtbdtbtvtlvlqlllvvdvsdsslccbscsbbcggldlvvdccdscdsdzsddpggcfggnffpjpnpcncfcqqlvvszzbpbqbcqczcqzcqzqqlrlwwbgglrrbgbhhlbbsffrprtpppdwdhwhbbpssvbvnntbbfnfddmmfcfcjfftbfbdbccngcgjcjtjftjffrwwtwlwddczcnzczpzcpccrqcrczrzcrzzhnntgtqgtgztgzzcpphshwswfwqqnzngzzbpzzpqpzqznzdzmzqqjzzhnhvnnqjnnrdrcctdtppsffzvvwvbbpttsrsspsddfvvfllrtlljpjlplcctthbbgbqgbgmmpwpvvghvhfhwfwcwvwrvwrvvcgccdncddbmbmfmlffgqggrzgzhhzfzdfzfhhzdhzhjzjhhbffrtrjtthssbpspddpttrggdndsnnjwwzrwrvvmqvmvdvhvjvnnqmmhrhrzzzwttnftfddsdfsfjsjcccvhvgvgzvgzvzbvvhwhbbpccfjfllgmlggtbggdsgsmmmnznqnhqhrqhrrtthwhqqvzqvvvqgqffpvptvpvwvbvsscsnnhlnhhzrzjrjrllcffpqpbpsbbflblppqffbqqpttccdgcgdgfdfgdgjddjljpljppdspddflftllhchmcmwcwddrqqsdsswwmwwwjdjvdvwwcgcddmhhqtqvqmvvnffqppnvpphpnnshsmhmdhmdddlnlmnmsnnpttlfttnqnhqnqrnrddplplbpbdpdhppccbnbwwpwzwgwdgdnggcmmtnmnznmzmwmrmtrrjppjgjmggndgnnjzzrczzftztzgzvgvddgmdgmgpmmgjmmnrrmvmnvvhqqggsnnplnlnbbrcbbpphssnqsnspnncfchhvjjdjvjfjddbjbddhlllpdnrhtzhqpphzfbjclncdlrbtzhcwslpnstdvjslnzfrvfdlmpgpfhrqtjvqvjlqgdcjrbjtjrgvbfwjzsvrbmffnhvjqnshvdjbgwmpwlfjznngzpqbvlztnvgvjsnwvhpfwbhfsmjgwwjdrrwbtvpwtzvjfhwrmnrhdsvgpgdsfgndmffqfplsgjrsvztzlznqsrbldbmmhqmjtrzscrbwlpgztlrvllprnhzsvtnvwzmjwqhqpjqhntcrscwcdnwzpvbdczzcmzrmdwthdtszqzftcsfbwfqggpcntfrgwpmjpdzjnczwcjmdjnrqjfwqbznznmcdvzqlpqschnmcfqjjrjwfmqqftfdhdzffvshqbmrgrpvlgqcgsbsngttvcpjswdgrhbblrhjllfbzngqjzzbdwtnlnrbpftvwbmrhvcnntdrbvtrtpcsqdsrvpsgggfpwcbzhwhwmmmmmgjzgdtwnzjdwjfljghbjvjnsgshmdpztnbbrnwfvzhtzqpzttftdmcmqzlnrgncwwtpwqrgmpmwwchwhbbbblcndbsrrqtnztcmqhvdwfcswnswvhqdtqfdrhjgczqvrzqczmnpcgbwntjvlsfrzrrjtsvfzfmbwwsftwqvttpjvbggrlcspnfhwwmrhdbbhdcjvmrhppvcmtmfhszjlcjjsdqfvjttcmffwzfpmjmjzhcrqmhhwzhjlnwphvvhmrbllsvpjljthjndffrdbmdjncnmdtcwfwjdwnrdlvqsbzczlhwrtpnzfwzzwbrqpglgvrjsnsprvwszmlrjcdgzwchmcqrjdlzqfvqwwfszpptprhcfsdfcrnhvhgvcdwgnqzjtmgznltbjjqwzlljrqcmpdncshzvsmvjwlmvtwbtjcgmqfslvwcfqpljzdjmdvqjlztbsbshcwhlvzcmzljvrrhrbzwvthgtnszpcrrdwcmtdncdzlbdscfbhrlqttcfshqrsgvzhlcnvfhppdqvblsznmctftmnslwgbmbgshgwvmzpdnmqmjgqnvrwprmbzrdprrbcwnslczvzgnssjqqzdrlntrnsrgbjjcpqvnqwvnwgslchqzbphcqsbvgvwzlnsndfrhqjvtlnqpcsgswzfvhjmfgwgfvhjgzntdbztmjsbmtwlfmvvgvztvwwmqclcgctqbvljgfngcvfqlmmvqmbtrnnbhqjjndzqhvvdztjgvwgrtltfrlzrjcpgwvpqwmcwmqccjtjhhbrrqphlpljvhjzpdfcdsgzfpnzdzhfdqjsnrvmwstrmmwmlhbvrjbtnmvwcqnzqzzpwzjdnfhqwwlsvgnnjgffzcnrtbjfwllnrgppchqwnfpwpgnfbvwcbjrlscnwlswjmnrcrhtdhgpzvgtfcqzgqtwvlhrgbmjvvzhrlzfvmrdjjctvfwsgmjwbqslhmjlcvlwrdqfmbhcfrmrvqtslplwpsgrfmntmtvmvqttbspmftgqdzlcfplcvvfmmjttwqjpdtjzzsfjcprvbwdvfrpzddhwrlmsnpjzqgdlfdzvdjnjtgtfflzzvjlmnnvmglrptsnppwscznltcvzfjmwshnsqsvsjpqwsqlbwzslhgrdcbbvcjspqfntbcpwwrphgpmwbpqdcfvvtlsgpfshtcrdftsltwnbnmzfwcwlmrhlntmmnnpsdchvntcwbnmjdgwcmzzvbrhbdbmlgwppzwsqvcccdbfzfsfhtmbppnwbtjvrvjtmddhmrjdqgnmrnjjpqsgtbgcvtclzzstlpldtqbnnvqjfbjcfzblvcwhjphzcgwfljjhzzmwdcrzsssznztcwpjlbcffnlmsfjbmtvhhcljmtqdprdmdgwgpnnlmhgwpsgprfqnspmntrdjwjmrflsbfpqhzswbsrdbdhjmvtwmjjnmpllgfllzgwwmswjcmggbrvsbbhjmsdzzpbhbrlphwdsmjdzsqjfrmdmpljnwscjrhdvzqbhhvpmhwqfrrhzlncrrrzhmjdwqjcbsqjbhbdbjzpslrnnbzctnnlhqmqqbdzfbrpfgwsrdglnplpspnnqhtbhzhzgtchcbqcmmcmvlllczqbtmbstzmnlhhhbmmbtjwnbgwjbfhgvfhqlsgdnnrsgghjzjlqfwbbgztdqzbhhwhcwtjwsgstjpzcjjvqbpfpvlqfqshvfzbwmfcwfgqvgmbppfvzgzznzhsqbvzlztsnmnrbgqzbmbhlvqhfncdfcpttgzpvvzdbhvqdtqsblqvrsrnmsfbqhrpvlzffdzptzghvmbmdzjrsqzhqddqm
\ No newline at end of file