Thanks to Helion for pointing out this site, which has a chess-playing Java applet. The program allows you to see the moves the that it’s considering. The green lines represent White’s possible moves, and orange Black’s.
The program is not particularly strong. I played it and won. The pieces are not represented conventionally, which makes it a bit more difficult. When I played my twentieth move, I was expecting to resign soon because I had a hard time visualising the board.
I had the white pieces.
1.d4 Nc6 2.c4 e5 3.d5 Nd4 4.e3 Nf5 5.e4 Nd4 6.Be3 Nf6 7.Bxd4 exd4 8.Qxd4 Bb4+ 9.Nc3 c5 10.dxc6 bxc6 11.e5 Qe7 12.Nf3 O-O 13.Be2 Nh5 14.O-O g5 15.Ne4 Nf4 16.Bd3 Ne6 17.Qe3 Nf4 18.Nexg5 Nxd3 19.Qxd3 f6 20.Nxh7 Qxh7 21.Qxh7+ Kxh7 22.exf6 Rxf6 23.a3 Ba5 24.b4 Bc7 25.Rfe1 Kg8 26.Re8+ Rf8 27.Rae1 Ba6 28.R8e7 Bb6 29.c5 Bc7 30.Rxd7 Bf4 31.Ree7 Bc1 32.Rg7+ Kh8 33.Rh7+ Kg8 34.Rdg7#
OK, I don’t claim it’s a gem, but it’s not often that I play without committing a couple of blunders. And it’s always a good feeling to beat a computer.