diff --git a/src/main.rs b/src/main.rs
index c7fb28d..eb33c6e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -280,13 +280,6 @@ impl Sudoku {
 	}
 
     fn remove_allowed(&mut self, row_index: usize, column_index: usize, blocking_cells: &Vec<cell::BlockingCell>) -> Result<(), WaveError> {
-    	if let Some(state) = self.grid[row_index][column_index].get_state() {
-    		for blocking_cell in blocking_cells {
-    			if blocking_cell.state == state {
-					return Err(WaveError::Contradiction)
-				}
-			}
-		}
     	match self.grid[row_index][column_index].remove_allowed(blocking_cells) {
 			Ok(result) => {
 				let cell::RemoveResult::Collapsed(state) = result else {
@@ -407,7 +400,6 @@ impl Sudoku {
 		    }
 		}
 		println!();
-
 		if self.debug_display {
 	    	println!("--------");
 	    }