Leverett CP

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Leverett CP,
an early chess program written by Bruce W. Leverett which participated at the ACM 1972 [1], where it finished in a tie for last place, loosing from USC CP and Schach, and a draw versus MSU CP. The Shannon Type B program apparently had some issues with choosing the subset of moves and suffered from tactical blunders.


by Peter Koretsky on Leverett CP in 1972 [2]:

Leverett, who is concentrating in Physics and Chemistry at Harvard, entered the tournament for the first time. His program finished in a tie for last place, and was labeled "the joke of the tournament" by International Master David Levy, the tournament director. Leverett attributed his defeat to "poor programming" and vowed to scrap his program and start all over again. 


The three games from ACM 1972 [3]:

Round 1

versus USC CP

[Event "ACM 1972"]
[Site "Boston USA"]
[Date "1972.08.13"]
[Round "1"]
[White "USC CP"]
[Black "Leverett CP"]
[Result "1-0"]

1.e4 Nf6 2.e5 Ne4 3.d3 Nc5 4.Nc3 Nc6 5.Nf3 d5 6.Be3 d4 7.Ne4 Nxe5
8.Nxe5 Na4 9.Ng5 Nxb2 10.Qf3 Nxd3+ 11.Bxd3 Be6 12.Nexf7 Qd5
13.Nxh8 Qxf3 14.gxf3 Bxa2 15.Bxd4 O-O-O 16.Rxa2 Rxd4 17.Ne6 Rd6 18.Nxf8 Rf6
19.Nxh7 Rxf3 20.Rxa7 c5 21.Ng6 Rf7 22.Be4 e6 23.Ng5 Rf6 24.Rxb7 Rxg6
25.Bxg6 Kxb7 26.Nxe6 c4 27.Nxg7 Kc6 28.Bf7 Kb5 29.Rg1 Kb4 30.Rg4 Ka3
31.Bxc4 Kb2 32.Kd2 Ka3 33.Kc3 Ka4 34.h3 Ka5 35.Rg5+ Ka4 36.Bb3+ Ka3
37.Ra5# 1-0

Round 2

versus Schach

[Event "ACM 1972"]
[Site "Boston USA"]
[Date "1972.08.14"]
[Round "2"]
[White "Leverett CP"]
[Black "Schach"]
[Result "0-1"]

1.Nc3 d5 2.e4 dxe4 3.Nxe4 e5 4.Qh5 Nc6 5.Nf3 Nf6 6.Nxf6+ gxf6 7.Bc4 Qd7
8.Qxf7+ Qxf7 9.Bxf7+ Kxf7 10.O-O Rg8 11.d3 Bc5 12.Be3 Nd4 13.Nxd4 exd4
14.Bf4 Bd6 15.Bg3 Be6 16.a4 Rg5 17.h4 Rg4 18.b4 Bxg3 19.fxg3 Rxg3
20.Rf4 Rd8 0-1

Round 3

versus MSU CP

[Event "ACM 1972"]
[Site "Boston USA"]
[Date "1972.08.15"]
[Round "3"]
[White "MSU CP"]
[Black "Leverett CP"]
[Result "1/2-1/2"]

1.d4 Nf6 2.Bg5 Ne4 3.Nf3 Nc6 4.Qd3 Nxg5 5.Nxg5 e6 6.Ne4 Bb4+ 7.c3 f5
8.Nc5 Bxc5 9.dxc5 Qe7 10.Qb5 a6 11.Qc4 O-O 12.e3 g5 13.Be2 f4 14.Bh5 h6
15.e4 a5 16.Kd2 Kg7 17.a4 Kh8 18.h3 Rd8 19.Rh2 Ra7 20.f3 Qf6 21.Na3 Ra8
22.Nb5 Qe5 23.Bg6 Kg7 24.Bh5 Rh8 25.Kd3 Rf8 26.b3 Nb4+ 27.Kd2 Nc6
28.Ra2 Ne7 29.Qd4 Qxd4+ 30.Nxd4 e5 31.Nb5 Ra6 32.Nxc7 Rc6 33.Ne8+ Rxe8
34.Bxe8 Rxc5 35.Kd3 d5 36.Rd2 Be6 37.Rb2 b6 38.Bh5 Bd7 39.Rf2 Bc6
40.Rd2 Kh8 41.Bf7 dxe4+ 42.fxe4 b5 43.b4 axb4 44.cxb4 Rc1 45.Bd5 bxa4
46.Bxc6 Nxc6 47.Rb2 Rg1 48.b5 Rd1+ 49.Ke2 Rd6 50.bxc6 h5 51.Rb8+ Kh7
52.Re8 Rxc6 53.Rxe5 h4 54.Kd3 a3 55.Re7+ Kg6 56.Ra7 Rd6+ 57.Kc2 Rc6+
58.Kd3 Rd6+ 59.Kc4 Rc6+ 60.Kd4 Rd6+ 61.Kc3 Rc6+ 62.Kd3 Rd6+ 1/2-1/2

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