4 × 5

13 × 70

14 × 30, 14 × 35, 14 × 45

17 × 50

18 × 25

19 × 50

21 × 30

23 × 30

complete

smallest rectangle: 4 × 5

smallest odd rectangle: 18 × 25

The smallest odd rectangle was given in [1, Figure 13] and [2, Figure 11].

**References**

[1] William Rex Marshall,
Packing
Rectangles with Congruent Polyominoes,
*Journal of Combinatorial Theory, Series A* **77** (1997),
no. 2, pp. 181-192.

[2] Michael Reid,
Tiling Rectangles and
Half Strips with Congruent Polyominoes,
*Journal of Combinatorial Theory, Series A* **80** (1997),
no. 1, pp. 106-123.

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Updated August 25, 2011.