Kevin Begley kevinjbegley at gmail.com
Fri Nov 1 12:07:33 EDT 2013

Wow!! Thank you Francois!
Very cool.

On Fri, Nov 1, 2013 at 7:50 AM, Francois Labelle <flab at wismuth.com> wrote:

> On 05/24/2013 06:34 PM, Kevin Begley wrote:

>

>> It would be interesting if a program could sift through a large game

>> database, and find the longest unique game.

>>

>

> I searched 5,015,441 games from the ICOfY Base 13.2.2 (

> http://icofy-blog.de/icofy-**base/ <http://icofy-blog.de/icofy-base/> )

> Here are some results.

>

> Table 1:

> For each length n

> - the number of distinct unique proof games in n moves seen

> - the number of unique proof games in n moves seen (with repetition).

>

> 0.5: 20 5015441

> 1.0: 338 5015441

> 1.5: 554 562724

> 2.0: 602 221155

> 2.5: 289 66716

> 3.0: 198 49543

> 3.5: 134 1770

> 4.0: 69 701

> 4.5: 40 561

> 5.0: 22 103

> 5.5: 14 22

> 6.0: 11 14

> 6.5: 3 3

> 7.0: 1 1

> 7.5: 1 1

> 8.0: 1 1

> 8.5: 0 0

>

> Table 2:

> For each length n, the top 3 most popular unique proof games in n moves

> (with the number of appearances in parentheses).

>

> 0.5 moves:

> (2496418) 1. e4

> (1627387) 1. d4

> (391580) 1. Nf3

>

> 1.0 move:

> (1007096) 1. e4 c5

> (900157) 1. d4 Nf6

> (599493) 1. e4 e5

>

> 1.5 moves:

> (84958) 1. e4 d5 2. exd5

> (73479) 1. c4 Nf6 2. Nc3

> (62222) 1. c4 e5 2. Nc3

>

> 2.0 moves:

> (51550) 1. e4 d5 2. exd5 Qxd5

> (45576) 1. e4 Nf6 2. e5 Nd5

> (33062) 1. e4 d5 2. exd5 Nf6

>

> 2.5 moves:

> (46808) 1. e4 d5 2. exd5 Qxd5 3. Nc3

> (4566) 1. e4 d5 2. exd5 Nf6 3. Bb5+

> (4050) 1. b4 e5 2. Bb2 Bxb4 3. Bxe5

>

> 3.0 moves:

> (32707) 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5

> (10198) 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6

> (3135) 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8

>

> 3.5 moves:

> (579) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. e3

> (393) 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. f3

> (148) 1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ Kxf7 4. Qh5+

>

> 4.0 moves:

> (378) 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. f3 gxh4

> (59) 1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ Kxf7 4. Qh5+ Kg8

> (37) 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bb5+ c6

>

> 4.5 moves:

> (378) 1. d4 Nf6 2. Bg5 Ne4 3. Bh4 g5 4. f3 gxh4 5. fxe4

> (59) 1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ Kxf7 4. Qh5+ Kg8 5. Qd5+

> (29) 1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Bxd3 5. Qxd3

>

> 5.0 moves:

> (59) 1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ Kxf7 4. Qh5+ Kg8 5. Qd5+ e6

> (9) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 O-O

> (6) 1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. Bd3 Bxd3 5. Qxd3 Bd6

>

> 5.5 moves:

> (5) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 Bxc3+ 6. bxc3

> (4) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 O-O 6. e3

> (2) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 O-O 6. Qb3

>

> 6.0 moves:

> (2) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 Bxc3+ 6. bxc3 O-O

> (2) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 Bxc3+ 6. bxc3 Qe7

> (2) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 O-O 6. e3 Re8

>

> 6.5 moves:

> (1) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 O-O 6. e3 Re8 7. Ne2

> (1) 1. d4 f5 2. Bg5 Nf6 3. Bxf6 exf6 4. c4 Bb4+ 5. Nc3 c5 6. e3 Qa5 7. Ne2

> (1) 1. d4 d5 2. Bg5 Bf5 3. Bxe7 Bxc2 4. Bxd8 Bxd1 5. Bxc7 Bxe2 6. Bxb8

> Bxf1 7. Bxa7

>

> 7.0 moves:

> (1) 1. d4 d5 2. Bg5 Bf5 3. Bxe7 Bxc2 4. Bxd8 Bxd1 5. Bxc7 Bxe2 6. Bxb8

> Bxf1 7. Bxa7 Bxg2

>

> 7.5 moves:

> (1) 1. d4 d5 2. Bg5 Bf5 3. Bxe7 Bxc2 4. Bxd8 Bxd1 5. Bxc7 Bxe2 6. Bxb8

> Bxf1 7. Bxa7 Bxg2 8. Bc5

>

> 8.0 moves:

> (1) 1. d4 d5 2. Bg5 Bf5 3. Bxe7 Bxc2 4. Bxd8 Bxd1 5. Bxc7 Bxe2 6. Bxb8

> Bxf1 7. Bxa7 Bxg2 8. Bc5 Bxh1

>

>

> Below are the 3 games that start with unique proof games of length 6.5,

> 6.5 and 8.0, respectively.

>

> [Event "?"]

> [Site "?"]

> [Date "1996.??.??"]

> [Round "?"]

> [Black "Sleisz, Tamas"]

> [Result "1-0"]

> [WhiteElo "2160"]

> [BlackElo "2280"]

> [ECO "A80"]

> [EventDate "1996.??.??"]

> [PlyCount "87"]

>

> 1.d4 f5 2.Bg5 Nf6 3.Bxf6 exf6 4.c4 Bb4+ 5.Nc3 O-O 6.e3 Re8 7.Ne2 c6 8.Qb3

> Na6 9.a3 Qa5 10.Rc1 Bxc3+ 11.Rxc3 d6 12.g3 Be6 13.Nf4 Bf7 14.Qc2 g6 15.Bd3

> Qd8 16.b4 Nc7 17.O-O Qe7 18.a4 a5 19.b5 c5 20.Rd1 Rad8 21.Bf1 b6 22.Bg2

> Kg7 23.Bc6 Rg8 24.Rcd3 g5 25.dxc5 dxc5 26.Rd7 Rxd7 27.Rxd7 Qe5 28.Nd3 Qa1+

> 29.Qc1 Qxc1+ 30.Nxc1 Ne6 31.Bd5 Kg6 32.Rb7 g4 33.Rxb6 Ng5 34.Bxf7+ Nxf7

> 35.Nd3 Rd8 36.Nf4+ Kh6 37.Rxf6+ Kg7 38.Rxf5 Rd1+ 39.Kg2 h6 40.Rxc5 Ng5 41.

> h3 Nf3 42.hxg4 Ne1+ 43.Kh3 Rd2 44.g5 1-0

>

> [Event "?"]

> [Site "?"]

> [Date "1994.??.??"]

> [Round "?"]

> [White "Kolman, Richard"]

> [Black "Lenhart, Djuro"]

> [Result "1-0"]

> [BlackElo "2250"]

> [ECO "A80"]

> [EventDate "1994.??.??"]

> [PlyCount "47"]

>

> 1.d4 f5 2.Bg5 Nf6 3.Bxf6 exf6 4.c4 Bb4+ 5.Nc3 c5 6.e3 Qa5 7.Ne2 cxd4 8.

> exd4 b5 9.c5 Bb7 10.Qb3 Be4 11.O-O-O Bxc3 12.Nxc3 a6 13.d5 b4 14.Na4 d6

> 15.f3 dxc5 16.fxe4 fxe4 17.d6 Nc6 18.Qe6+ Kd8 19.b3 Re8 20.Qd5 e3 21.Qxc6

> Rb8 22.Nxc5 Re7 23.dxe7+ Kxe7 24.Qe6+ 1-0

>

> [Event "?"]

> [Site "?"]

> [Date "2003.??.??"]

> [Round "?"]

> [White "Becker, Johannes"]

> [Black "Bissbort, Julian"]

> [Result "1/2-1/2"]

> [ECO "D00"]

> [EventDate "2003.??.??"]

> [PlyCount "22"]

>

> 1.d4 d5 2.Bg5 Bf5 3.Bxe7 Bxc2 4.Bxd8 Bxd1 5.Bxc7 Bxe2 6.Bxb8 Bxf1 7.Bxa7

> Bxg2 8.Bc5 Bxh1 9.Bxf8 Be4 10.Bxg7 Bxb1 11.Bxh8 Bxa2 1/2-1/2

>

> François

>

>

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