ç Index to Chessboard Dissection Problems

# The 35 [6]-pieces and the 12 [5]-pieces

## Single Shapes

H. D. Benjamin (FCR Feb/Apr 1949, ¶7976-7) forms the [6]s and [5]s into shapes that will fit together to form a rectangle 15×18, or alternatively a stepped parallelogram by moving the wedge of 5-square pieces to the right-hand side, neither pattern having any crossroads.

W. Stead (FCR Dec 1954 ¶27) 15×18 rectangle with the [5]s forming a Rook framed by the [6]s CD=6.

H. D. Benjamin (FCR Jun/Aug 1948 ¶7727). Rectangle 10×27, a degenerate 'hollow rectangle' of width 5, with central cut of 17 units length.

H. D. Benjamin (FCR Jun/Aug 1948 ¶7727). Hollow rectangle 18×19, width 5.

H. D. Benjamin (FCR Aug/Oct 1944 ¶6167). Cross of Lorraine,19×30.

H. D. Benjamin (FCR Dec/Feb 1944/5 ¶6227). Ornate Cross of Lorraine, 21×32.

## The [6]s + [5]s in Multi-Part Constructions

### Two Shapes

W. H. Reilly (FCR Dec/Oct 1949/1950 ¶8551). "60" for T. R. Dawson 60th birthday tribute.

### Three Shapes

W. H. Reilly (FCR Oct/Dec 1949 ¶8298). The [6]s and [5]s forming [6]-shape 38 (6,17) in three sizes 2, 4, 5 simultaneously.

F. Hansson (FCR Feb/Jun 1951 ¶8940). The [6]s and [5]s forming [6]-shape 49 (6,35) in three sizes 2, 4, 5 simultaneously. Three solutions one with all the [5]s in the 4-fold shape, one with them in the 5-fold shape, and one with them shared between the two shapes.

### Four Shapes

F. Hansson (FCR Jun/Apr 1951/2 ¶9106). Show a [5] piece in four different sizes simultaneously, sizes 2, 3, 4, 5, shows the [5]-shape 14 (5,6).

W. H. Reilly (FCR Oct/Feb 1952/3 ¶9389). The [5]-shape 17 (5,8) in four different sizes simultaneously, sizes 2, 3, 4, 5.

W. H. Reilly (FCR Apr/Aug 1953 ¶9544). The [5]-shape 11 (5,2) in four different sizes simultaneously, sizes 2, 3, 4, 5.

W. H. Reilly (FCR Aug/Dec 1954 ¶10,004). The [5]-shape 13 (5,4) in four different sizes simultaneously, sizes 2, 3, 4, 5.

### Five Shapes

F. Hansson (FCR Dec/Apr 1952/3 ¶9443). The [6]s and [5]s in five simultaneous rectangles, each 6×9. Hence also solves rectangles 6×45, 9×30, 15×18 and other shapes,