Are there contradictory stories regarding the flood of Noah?

This question would seem to be an open and shut case. It would seem to be quite basic from reading the biblical accounts that there is no problem at all with the texts. However, for argument's sake, we'll take a look at the passages referenced. Where we presumably run into a problem is where according to the individual asking the question, Noah was told by God to take two of every kind of animal and then thereafter, take 7 of every kind of animal into the ark.

The primary focus here is Genesis 6-7. We'll take a look at the objection raised in whole: 9 This is the account of Noah.
Noah was a righteous man, blameless among the people of his time, and he walked with God. 10 Noah had three sons: Shem, Ham and Japheth.

11 Now the earth was corrupt in God's sight and was full of violence. 12 God saw how corrupt the earth had become, for all the people on earth had corrupted their ways. 13 So God said to Noah, "I am going to put an end to all people, for the earth is filled with violence because of them. I am surely going to destroy both them and the earth. 14 So make yourself an ark of cypress [c] wood; make rooms in it and coat it with pitch inside and out. 15 This is how you are to build it: The ark is to be 450 feet long, 75 feet wide and 45 feet high. [d] 16 Make a roof for it and finish [e] the ark to within 18 inches [f] of the top. Put a door in the side of the ark and make lower, middle and upper decks. 17 I am going to bring floodwaters on the earth to destroy all life under the heavens, every creature that has the breath of life in it. Everything on earth will perish. 18 But I will establish my covenant with you, and you will enter the ark—you and your sons and your wife and your sons' wives with you. 19 You are to bring into the ark two of all living creatures, male and female, to keep them alive with you. 20 Two of every kind of bird, of every kind of animal and of every kind of creature that moves along the ground will come to you to be kept alive. 21 You are to take every kind of food that is to be eaten and store it away as food for you and for them."

22 Noah did everything just as God commanded him.

Genesis 7
1 The LORD then said to Noah, "Go into the ark, you and your whole family, because I have found you righteous in this generation. 2 Take with you seven [g] of every kind of clean animal, a male and its mate, and two of every kind of unclean animal, a male and its mate, 3 and also seven of every kind of bird, male and female, to keep their various kinds alive throughout the earth. 4 Seven days from now I will send rain on the earth for forty days and forty nights, and I will wipe from the face of the earth every living creature I have made."

5 And Noah did all that the LORD commanded him.

The important thing to notate about this passage is the language being used. The Lord commands Noah to take 20 Two of every kind of bird, of every kind of animal and of every kind of creature that moves along the ground will come to you to be kept alive. In this passage the Lord tells Noah that these animals are to be kept alive.

So then, what would the purpose be for the next command of God? The LORD then said to Noah, "Go into the ark, you and your whole family, because I have found you righteous in this generation. 2 Take with you seven [g] of every kind of clean animal, a male and its mate, and two of every kind of unclean animal, a male and its mate, 3 and also seven of every kind of bird, male and female, to keep their various kinds alive throughout the earth.

Notice, he tells Noah to bring seven of every kind of clean animal. This is not the same instruction, but rather, an added instruction. He then says to Noah that he is to take two of every kind of unclean animal. The purpose for this is to add on to the instruction given to Noah previously. If you note in this passage, the Bible is quite fluid within the text. It is stating that the Lord "then" states, meaning that there is a further instruction from the first one.

So then we see that one place says 9 of every kind is to be taken into the ark and one says 2 of every kind to be kept alive. One if not carefully investigating this could be caught up into the situation which one could believe that there is no significant difference. However, there is something of importance to recognize here. Jewish law at the time required that man make animal sacrifices to God. The custom of sacrificing animals was traditionally held to forgive the sins of mankind. Noah being the one called by God was to sacrifice these animals in order to receive forgiveness from God. What then to be said of the categories of animals? There are 7 of every kind of clean animal. And notating that they were clean animals is vital because there were three necessary procedures to follow. The animal had to be spotless, the person would have to inflict death upon it and also had to identify with the animal. While the other two conditions were significant to the flooding issue called upon by God, since mankind would now identify with all of God's creation. The main thing to keep in mind however would be that the 7 of every kind of clean animal was for sacrifice. Therefore, the objection really becomes silly because with knowledge of that, its fairly obvious that the 2nd part of the story flows into the 1st part, since the other 2 of every kind of unclean animal would be kept alive. Hence there is no problem with the flood story in any way shape or form.

Are there contradictory stories regarding the flood of Moses?

This question would seem to be an open and shut case. It would seem to be quite basic from reading the biblical accounts that there is no problem at all with the texts. However, for argument's sake, we'll take a look at the passages referenced. Where we presumably run into a problem is where according to the individual asking the question, Noah was told by God to take two of every kind of animal and then thereafter, take 7 of every kind of animal into the ark.

The primary focus here is Genesis 6-7. We'll take a look at the objection raised in whole: 9 This is the account of Noah.
Noah was a righteous man, blameless among the people of his time, and he walked with God. 10 Noah had three sons: Shem, Ham and Japheth.

11 Now the earth was corrupt in God's sight and was full of violence. 12 God saw how corrupt the earth had become, for all the people on earth had corrupted their ways. 13 So God said to Noah, "I am going to put an end to all people, for the earth is filled with violence because of them. I am surely going to destroy both them and the earth. 14 So make yourself an ark of cypress [c] wood; make rooms in it and coat it with pitch inside and out. 15 This is how you are to build it: The ark is to be 450 feet long, 75 feet wide and 45 feet high. [d] 16 Make a roof for it and finish [e] the ark to within 18 inches [f] of the top. Put a door in the side of the ark and make lower, middle and upper decks. 17 I am going to bring floodwaters on the earth to destroy all life under the heavens, every creature that has the breath of life in it. Everything on earth will perish. 18 But I will establish my covenant with you, and you will enter the ark—you and your sons and your wife and your sons' wives with you. 19 You are to bring into the ark two of all living creatures, male and female, to keep them alive with you. 20 Two of every kind of bird, of every kind of animal and of every kind of creature that moves along the ground will come to you to be kept alive. 21 You are to take every kind of food that is to be eaten and store it away as food for you and for them."

22 Noah did everything just as God commanded him.

Genesis 7
1 The LORD then said to Noah, "Go into the ark, you and your whole family, because I have found you righteous in this generation. 2 Take with you seven [g] of every kind of clean animal, a male and its mate, and two of every kind of unclean animal, a male and its mate, 3 and also seven of every kind of bird, male and female, to keep their various kinds alive throughout the earth. 4 Seven days from now I will send rain on the earth for forty days and forty nights, and I will wipe from the face of the earth every living creature I have made."

5 And Noah did all that the LORD commanded him.

The important thing to notate about this passage is the language being used. The Lord commands Noah to take 20 Two of every kind of bird, of every kind of animal and of every kind of creature that moves along the ground will come to you to be kept alive. In this passage the Lord tells Noah that these animals are to be kept alive.

So then, what would the purpose be for the next command of God? The LORD then said to Noah, "Go into the ark, you and your whole family, because I have found you righteous in this generation. 2 Take with you seven [g] of every kind of clean animal, a male and its mate, and two of every kind of unclean animal, a male and its mate, 3 and also seven of every kind of bird, male and female, to keep their various kinds alive throughout the earth.

Notice, he tells Noah to bring seven of every kind of clean animal. This is not the same instruction, but rather, an added instruction. He then says to Noah that he is to take two of every kind of unclean animal. The purpose for this is to add on to the instruction given to Noah previously. If you note in this passage, the Bible is quite fluid within the text. It is stating that the Lord "then" states, meaning that there is a further instruction from the first one.

So then we see that one place says 9 of every kind is to be taken into the ark and one says 2 of every kind to be kept alive. One if not carefully investigating this could be caught up into the situation which one could believe that there is no significant difference. However, there is something of importance to recognize here. Jewish law at the time required that man make animal sacrifices to God. The custom of sacrificing animals was traditionally held to forgive the sins of mankind. Noah being the one called by God was to sacrifice these animals in order to receive forgiveness from God. What then to be said of the categories of animals? There are 7 of every kind of clean animal. And notating that they were clean animals is vital because there were three necessary procedures to follow. The animal had to be spotless, the person would have to inflict death upon it and also had to identify with the animal. While the other two conditions were significant to the flooding issue called upon by God, since mankind would now identify with all of God's creation. The main thing to keep in mind however would be that the 7 of every kind of clean animal was for sacrifice. Therefore, the objection really becomes silly because with knowledge of that, its fairly obvious that the 2nd part of the story flows into the 1st part, since the other 2 of every kind of unclean animal would be kept alive. Hence there is no problem with the flood story in any way shape or form.