PerformancesΒΆ

Results below are given in seconds, and were run with the --silent option.

Pieces Size Solutions MacBook Air [1] C1 instance [2]
2 kings, 1 rook 3x3 4 0.01 0.04
2 rooks, 4 knights 4x4 8 0.12 0.91
1 queen 1x1 1 0 0
2 queens 2x2 0 0 0
3 queens 3x3 0 0 0.02
4 queens 4x4 2 0.02 0.10
5 queens 5x5 10 0.10 0.80
6 queens 6x6 4 0.90 7.10
7 queens 7x7 40 8.53 65.55
8 queens 8x8 92 85.80 673.28
9 queens 9x9 352 900.20 7 282.56
2 kings, 2 queens, 2 bishops, 1 knight 5x5 8 3.29 23.79
6x6 23 752 187.40 1 483.31
7x7 3 063 828 8 150.86 62 704.99

To run the standard benchmark suite and add results to the database, run the benchmark in a detached background process:

$ nohup chessboard benchmark > /dev/null 2>&1 &
[1]MacBook Air 5,2; x86 64 bits 2.0 GHz 2-cores i7-3667U CPU; 8 GB 1600 MHz DDR3 RAM; SSD Flash storage; Mac OS X Yosemite 10.10.5; Python 2.7.10.
[2]Scaleway C1 compute instance; ARMv7 32 bits 4-cores Marvell Cortex A9 Armada 370/XP CPU; 2 GB RAM; SSD Flash storage; Ubuntu Vivid 15.04; Python 2.7.9.

N-queens problem solving time:

N-queens problem solving time.