With Fujiwara 15/22/25 and Super Compo

Made by J. A. Storer, 2007.
(wood box with plexiglass bottom, lid, and 13 pieces, 5.75" x 7.75" x 1.25")

A box with a 4x5 tray and a 4x1 side tray to hold unused pieces. There are a total of six 1x1 pieces, six 1x2 pieces, and one 2x2 piece. Many classic 4x5 tray puzzles can be played; Dad's Puzzler, Nine Block, Quzzle / Quzzle Killer, Traffic Jam, Red Donkey, Century, Super Century, Century And A Half, Little House, Ushi, Hole in One, King Out, etc. Hordern's book shows many other puzzles that can be played. Another source for 4x5 tray puzzles is Fujiwara's Step by Step Problems page, which gives 25 problems of increasing difficulty (along with solutions if you get tired). Here are three of them and also Super Compo (designed by Junk Kato - see Baxter's Page), which is similar to but requires more moves that Fujiwara 25:

 Fugiwara 15 Fugiwara 22 Fugiwara 25 Super Compo

Fujiwara's Page, from: http://www.pro.or.jp/~fuji/java/puzzle/slide/V1.0/fuji.index-eng.html
Baxter's Page, from: http://www.johnrausch.com/SlidingBlockPuzzles/4x5.htm

A Solution To Fujiwara 15
Here is a solution of 47 straight-line moves; it can be converted to 43 rectilinear moves by combining steps 13/14, 27/28, 33/34, 45/46:

(one move = sliding one piece any number of units in one direction)

A Solution To Fujiwara 22
Here is a solution of 64 straight-line moves; it can be converted to 62 rectilinear moves by combining steps 11/12, 53/54:

(one move = sliding one piece any number of units in one direction)

A Solution To Fujiwara 25
Here is a solution of 111 straight-line moves; it can be converted to 101 rectilinear moves by combining steps 2/3, 19/20, 23/24, 30/31, 41/42, 53/54, 57/58, 60/61, 84/85, 109/110:

(one move = sliding one piece any number of units in one direction)

A Solution To Super Compo
Here is a solution of 132 straight-line moves; it can be converted to 123 rectilinear moves by combining steps 32/33, 39/40, 42/43, 62/63, 74/75, 78/79, 81/82, 105/106, 130/131:

(one move = sliding one piece any number of units in one direction)