No. LXVII
All the cards of one colour, when placed alternately, can be brought together in four moves, two at a time, thus—
| A ♠ | 2 ♡ | 3 ♣ | 4 ♢ | 5 ♣ | 6 ♢ | 7 ♣ | 8 ♡ |
Place two and three beyond eight;
Place five and six between one and four;
Place eight and two between four and seven;
Place one and five between seven and three.
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