PT - JOURNAL ARTICLE AU - Oppen, Johan TI - Keeping Jigsaws Connected DP - 2013 Mar 31 TA - Communications - Scientific Letters of the University of Zilina PG - 49--53 VI - 15 IP - 1 AID - 10.26552/com.C.2013.1.49-53 IS - 13354205 AB - This paper describes a combinatorial problem where the idea is to find out in how many ways a jigsaw puzzle can be built, piece by piece, in such a way that it stays connected at all times during the building phase. Computational methods, both exact and approximate, to count the number of such connected sequences are presented.