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import TestGame.Metadata
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import Mathlib
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Game "TestGame"
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World "TestWorld"
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Level 1
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Title "Annahmen"
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Introduction "yadaa yadaa"
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class MyClass (n : ℕ) where
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Statement name
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"Beweise dieses Lemma."
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(n m : ℕ) : CommSemigroup ℕ where
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mul := fun i j => 0
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mul_comm := sorry
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mul_assoc := sorry
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--@[exercise]
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instance instTest (n m : ℕ) : CommSemigroup ℕ where
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mul := fun i j => 0
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mul_comm := by
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sorry
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mul_assoc := by
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sorry
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--@[exercise]
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lemma asdf (a b c d : ℕ) (h₁ : c = d) (h₂ : a = b) (h₃ : a = d) : b = c := by
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rewrite [h₁]
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rw [←h₂]
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assumption
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Conclusion ""
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Tactics assumption
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