diff --git a/tetris.py b/tetris.py
--- a/tetris.py
+++ b/tetris.py
@@ -1,34 +1,36 @@
+from datetime import datetime
+
 import numpy as np
 
 from pieces import listRotations,listShifts,fits
 from dlx import Header,Column,Cell
+import piece_list
 
 
-board=np.zeros((1,4,3))
-boat=np.array([[[0,1,0],[1,1,1]]])
-sz=np.array([[[1,1,0],[0,1,1]]])
-el=np.array([[[1,1,1],[1,0,0]]])
+board=np.zeros((2,5,5))
+board[0][2][2]=1
 
 (nz,ny,nx)=board.shape
-pieces=[("el1",el),("el2",el),("sz",sz)]
-header=[name for (name,p) in pieces]+\
+pieces=[(name,np.array(arr)) for (name,arr) in piece_list.pieces]
+header=list(range(1,15))+\
 	[(z,y,x) for z in range(nz) for y in range(ny) for x in range(nx) if not board[z][y][x]]
 index={label:i for (i,label) in enumerate(header)}
 
 matrix=[]
 
-for (name,piece) in pieces:
+for ((nameA,nameB),piece) in pieces:
 	for p in listRotations(piece):
 		for shift in listShifts(board,p):
 			fit=fits(board,p,shift)
 			if fit is not False:
 				row=[0]*len(header)
-				row[index[name]]=1
+				row[index[nameA]]=1
+				row[index[nameB]]=1
 				for coords in fit: row[index[coords]]=1
 				matrix.append(row)
 
-print(header)
-for row in matrix: print(row)
+print(len(header),"cols")
+print(len(matrix),"rows")
 
 columns=[]
 head=Header()
@@ -48,4 +50,6 @@ for row in matrix:
 		col.size+=1
 
 print()
+print(datetime.now())
 head.search()
+print(datetime.now())