H. G. Muller wrote on Fri, Sep 18, 2009 04:17 PM UTC:
I am not sure what exactly you have done, but from the PGN of the first game (I did not look at the others yet) I can see it is something very strange. For one, these was not a 15 min game. The TimeControl tag in the PGN says 9999999/7200, which means 10 million moves in 7200 sec, or about 1.3 msec/move. As a result Joker moves instantly on many moves, having searched only 1 ply deep. (This can be seen from the comments between {} printed after each Joker move, which list score/depth (in Pawn units and ply), and time in sec). This means it essentially plays a random move.
To my surprise there are also moves where Joker searches 11 ply, and thinks 20-30 sec. I guess this is caused by ponder hits, where Joker could reach high depth in the opponent's time, and then finished the iteration. When there was a ponder miss, and Joker had to start searching from scratch when its turn started, it moved instantly and randomly.
This is not a useful way to use Joker80.
[Event 'Computer Chess Game']
[Site 'MEREQUETENGUE']
[Date '2009.09.08']
[Round '-']
[White 'Sam Trenholme']
[Black 'Joker80.np']
[Result '1-0']
[TimeControl '9999999/7200']
[Variant 'capablanca']
[FEN 'rqnbakbncr/pppppppppp/10/10/10/10/PPPPPPPPPP/RQNBAKBNCR w KQkq - 0 1']
[SetUp '1']
1. f4 h5 {+0.04/1 0.2} 2. e4 Bi6 {-0.29/11 30} 3. Ni3 e5 {-0.33/1 0.2} 4.
fxe5 h4 {-0.29/1 0.2} 5. Ng4 Bh7 {-0.70/11 22} 6. Bf3 Be7 {-0.25/1 0.2} 7.
Bf2 Ni6 {-0.74/11 14} 8. Ni5 Bg8 {-0.64/11 22} 9. Nd3 b5 {+0.05/1 0.2} 10.
Qd1 Ch8 {-0.12/1 0.3} 11. Be3 Ci8 {+0.10/1 0.1} 12. Nxj7 Rxj7 {-0.54/1 0.1}
13. Bxi6 Rj6 {-1.37/12 12} 14. Bxg8 Kxg8 {-1.66/12 30} 15. Ch3 i6
{-0.66/1 0.2} 16. O-O a5 {-1.93/11 29} 17. Qf3 Nb6 {-1.41/1 0.3} 18. Bg5
Bxg5 {-2.67/12 23} 19. Cxg5 i5 {-3.02/11 20} 20. Qf5 Ra7 {-2.54/1 0.7} 21.
Qxi8#
{White mates} 1-0
I am not sure what exactly you have done, but from the PGN of the first game (I did not look at the others yet) I can see it is something very strange. For one, these was not a 15 min game. The TimeControl tag in the PGN says 9999999/7200, which means 10 million moves in 7200 sec, or about 1.3 msec/move. As a result Joker moves instantly on many moves, having searched only 1 ply deep. (This can be seen from the comments between {} printed after each Joker move, which list score/depth (in Pawn units and ply), and time in sec). This means it essentially plays a random move. To my surprise there are also moves where Joker searches 11 ply, and thinks 20-30 sec. I guess this is caused by ponder hits, where Joker could reach high depth in the opponent's time, and then finished the iteration. When there was a ponder miss, and Joker had to start searching from scratch when its turn started, it moved instantly and randomly. This is not a useful way to use Joker80. [Event 'Computer Chess Game'] [Site 'MEREQUETENGUE'] [Date '2009.09.08'] [Round '-'] [White 'Sam Trenholme'] [Black 'Joker80.np'] [Result '1-0'] [TimeControl '9999999/7200'] [Variant 'capablanca'] [FEN 'rqnbakbncr/pppppppppp/10/10/10/10/PPPPPPPPPP/RQNBAKBNCR w KQkq - 0 1'] [SetUp '1'] 1. f4 h5 {+0.04/1 0.2} 2. e4 Bi6 {-0.29/11 30} 3. Ni3 e5 {-0.33/1 0.2} 4. fxe5 h4 {-0.29/1 0.2} 5. Ng4 Bh7 {-0.70/11 22} 6. Bf3 Be7 {-0.25/1 0.2} 7. Bf2 Ni6 {-0.74/11 14} 8. Ni5 Bg8 {-0.64/11 22} 9. Nd3 b5 {+0.05/1 0.2} 10. Qd1 Ch8 {-0.12/1 0.3} 11. Be3 Ci8 {+0.10/1 0.1} 12. Nxj7 Rxj7 {-0.54/1 0.1} 13. Bxi6 Rj6 {-1.37/12 12} 14. Bxg8 Kxg8 {-1.66/12 30} 15. Ch3 i6 {-0.66/1 0.2} 16. O-O a5 {-1.93/11 29} 17. Qf3 Nb6 {-1.41/1 0.3} 18. Bg5 Bxg5 {-2.67/12 23} 19. Cxg5 i5 {-3.02/11 20} 20. Qf5 Ra7 {-2.54/1 0.7} 21. Qxi8# {White mates} 1-0