ç Index to Chessboard Dissection Problems

# The 35 6-Pieces in Simultaneous Shapes

## Two Shapes

Mrs H. D. Benjamin (FCR Dec/Oct 1949/1950 ¶8552). The [6]s forming LX a Roman 60, for T. R. Dawson's 60th birthday.

## Three Shapes

F. Hansson (FCR April 1947 to June 1949) showed the [6]s in three different sized figures of the same [6]-shape simultaneously, with no crossroads or corner cuts. "The beginning of a lovely series." The series shows all 11 of the [6]s that have CD = 2. I give the FCR numbers of the pieces, and also (in parenthesis) the coding from the binary number method. The shapes have also been reorientated according to the binary number convention.

F. Hansson (FCR Apr/Jun 1947 ¶7252), Piece 24 (6,3).

F. Hansson (FCR Jun/Aug 1947 ¶7326), Piece 27 (6,7).

F. Hansson (FCR Aug/Oct 1947 ¶7388), Piece 33 (6,11).

F. Hansson (FCR Oct/Dec 1947 ¶7460), Piece 37 (6,15).

F. Hansson (FCR Feb/Apr 1948 ¶7592), Piece 39 (6,19).

F. Hansson (FCR Jun/Aug 1948 ¶7728), Piece 40 (6,27).

F. Hansson (FCR Aug/Oct 1948 ¶7794), Piece 44 (6,28).

F. Hansson (FCR Oct/Dec 1948 ¶7865), Piece 47 (6,30).

F. Hansson (FCR Dec/Feb 1948/9 ¶7940), Piece 51 (6,22).

F. Hansson (FCR Feb/Apr 1949 ¶7995), Piece 53 (6,23).

F. Hansson (FCR Apr/Jun 1949 ¶8080), Piece 55 (6,32). Conclusion of the series.

## Five Shapes

F. Hansson (FCR Dec/Apr 1952/3 ¶9442). The 35 [6]s in five congruent shapes simultaneously, half-hollow rectangles 5×9.