Conway puzzle
packing problem about packing thirteen 1×2×4 blocks, one 2×2×2 block, one 1×2×2 block and three 1×1×3 blocks into a 5×5×5 box
en-US/ˈkɑnˌweɪ ˈpʌzəl/
en-GB/kɒnweɪ ˈpʌzl/
packing problem about packing thirteen 1×2×4 blocks, one 2×2×2 block, one 1×2×2 block and three 1×1×3 blocks into a 5×5×5 box