Uli Vogel (Germany)  vs  Mona                Aug 3 - Sept 3, 2000

   1. b1-b3 a2-c2   2. g8-g6 a5-c7   3. e1-g3 a7-d7   4. c8:a6 h7-e7
   5. a6-d6 a3:c1   6. b8-b6 h2-f2   7. g1-g4 h5-g5   8. b3-e3 c1-c4
   9. d1-f3 h6:e3  10. g4:d7 a4:d7  11. f8-f4 c4:f4  12. b6:e3 c2-e4
  13. f1:h3 c7-f7  14. d8-b8 f7:f3  15. b8:f4 e4:g6  16. Resigns

 Uli was a pleasure to play with, being both witty and insightful.
 He took on the challenge of playing Mona despite having an unblemished
 record, and the highest rating on the server at the time.   He had a
 nasty habit of playing excellent moves, and lasted longer than any
 other human opponent has so far.

 The game was complex, with Mona blockading the top, and creating a
 foothold through Black's wall on the right.  The final phase is a
 race to connect, where deep searching programs are extremely strong.

      +-----------------+
    8 | . B B B B B B . |
    7 | W . . . . . . W |
    6 | W . . . . . . W |
    5 | W . . . . . . W |
    4 | W . . . . . . W |
    3 | W . . . . . . W |
    2 | W . . . . . . W |
    1 | . B B B B B B . |
      +-----------------+
        a b c d e f g h

   1. b1-b3 a2-c2

 ply value  best  principle variation (last 4-ply deleted)

 11    -12  a2-c2 b8-b6 h5-f7 e1-g3 a7-d7 g1-g4 a6:c8

 A note on Mona's minimax scores:

 There is a significant odd-even effect, so odd-ply values are likely
 optimistic (at least 50 points too high, so +50 should be interpreted
 as an equal position).  A score of about +150 usually indicates a
 small advantage, and +300 a clear advantage.

 Mona indicates a mate threat with a +1000 bonus, so a score of +3150
 indicates a small positional advantage and a triple threat to connect.
 Only certain types of mate threats are detected statically, so there
 could be more in a given position.  Mona reserves 0 (zero) for a draw
 and +32000 for a win.

      +-----------------+
    8 | . B B B B B B . |
    7 | W . . . . . . W |
    6 | W . . . . . . W |
    5 | W . . . . . . W |
    4 | W . . . . . . W |
    3 | W B . . . . . W |
    2 | . . W . . . . W |
    1 | . . B B B B B . |
      +-----------------+
        a b c d e f g h

   2. g8-g6 a5-c7

  9     +4   2-f2 b8-b6 f2:b6 c8-c5 h7-f7
  9    +13  a5-c7 g1-g3 h2-f2 e1-d2 a7-d7
  (11-ply output unavailable)

      +-----------------+
    8 | . B B B B B . . |
    7 | W . W . . . . W |
    6 | W . . . . . B W |
    5 | . . . . . . . W |
    4 | W . . . . . . W |
    3 | W B . . . . . W |
    2 | . . W . . . . W |
    1 | . . B B B B B . |
      +-----------------+
        a b c d e f g h

   3. e1-g3 a7-d7

  9    +54  a7-d7 g1-g4 h7-e7 g3:c7 h5-g5
 11    +51  a7-d7 g1-g4 a6:c8 g3:c7 h7-e7 c1-e3 h5-g5

      +-----------------+
    8 | . B B B B B . . |
    7 | . . W W . . . W |
    6 | W . . . . . B W |
    5 | . . . . . . . W |
    4 | W . . . . . . W |
    3 | W B . . . . B W |
    2 | . . W . . . . W |
    1 | . . B B . B B . |
      +-----------------+
        a b c d e f g h

   4. c8:a6 h7-e7

 11    +96  h7-e7 g3:c7 a3-d6 d1-d5 a4:a6 g1-g3 h4-g4
 13    +86  h7-e7 g3:c7 a3:a6 f1-d3 a6-c4 g1-g3 h6-f4 b8-b6 h5-f3

      +-----------------+
    8 | . B . B B B . . |
    7 | . . W W W . . . |
    6 | B . . . . . B W |
    5 | . . . . . . . W |
    4 | W . . . . . . W |
    3 | W B . . . . B W |
    2 | . . W . . . . W |
    1 | . . B B . B B . |
      +-----------------+
        a b c d e f g h

   5. a6-d6 a3:c1

 13    +93  h3-f5 c1:a3 e7-e5 f1-g2 c2-c4 d1-f1 f5-d3 f8-c5 h4-e4
 13   +113  a3:c1 e8:h5 c1-c4 g1-g4 c4:g4 d1:g4 d7:g4 b3-e3 h6:f8

      +-----------------+
    8 | . B . B B B . . |
    7 | . . W W W . . . |
    6 | . . . B . . B W |
    5 | . . . . . . . W |
    4 | W . . . . . . W |
    3 | . B . . . . B W |
    2 | . . W . . . . W |
    1 | . . W B . B B . |
      +-----------------+
        a b c d e f g h

   6. b8-b6 h2-f2

 11   +138  h2-f2 g1-g4 h5-g5 f1-e2 c1-f4 d1-d5 d7:g4
 13   +122  h2-f2 g1-g4 c1-c4 e8:h5 h3:f1 b6-b4 a4-c6 g4:c4 h6-g5

      +-----------------+
    8 | . . . B B B . . |
    7 | . . W W W . . . |
    6 | . B . B . . B W |
    5 | . . . . . . . W |
    4 | W . . . . . . W |
    3 | . B . . . . B W |
    2 | . . W . . W . . |
    1 | . . W B . B B . |
      +-----------------+
        a b c d e f g h

   7. g1-g4 h5-g5

 13    +94  c1-c4 e8:h5 c4:g4 d1:g4 d7:g4 h5-g5 h4-e4 f1-e2 h3-h5
 13   +111  h5-g5 f1-e2 c1-c4 b3-b5 h3-g2 g3-h3 a4-e4 g4:d7 c4-d5

      +-----------------+
    8 | . . . B B B . . |
    7 | . . W W W . . . |
    6 | . B . B . . B W |
    5 | . . . . . . W . |
    4 | W . . . . . B W |
    3 | . B . . . . B W |
    2 | . . W . . W . . |
    1 | . . W B . B . . |
      +-----------------+
        a b c d e f g h

   8. b3-e3 c1-c4

 11   +229  c1-c4 d1-f3 d7:g4 f8:h6 h3-f5 f1-d3  ... 
 13   +222  c1-c4 g4-e2 h6:e3 b6:e3 g5:e3 f1:c4 c7:c4 d1-d5 f2-f4

      +-----------------+
    8 | . . . B B B . . |
    7 | . . W W W . . . |
    6 | . B . B . . B W |
    5 | . . . . . . W . |
    4 | W . W . . . B W |
    3 | . . . . B . B W |
    2 | . . W . . W . . |
    1 | . . . B . B . . |
      +-----------------+
        a b c d e f g h

   9. d1-f3 h6:e3

 13   +258  d7:g4 f8:h6 a4-e4 e8-d7 h3-e6 b6-b5 c2-f5 d8-d5 h4-d4
 13   +276  h6:e3 b6:e3 g5:e3 g4:d7 a4:d7 g6-g4 d7:g4 f8-f4 h3-f5

      +-----------------+
    8 | . . . B B B . . |
    7 | . . W W W . . . |
    6 | . B . B . . B . |
    5 | . . . . . . W . |
    4 | W . W . . . B W |
    3 | . . . . W B B W |
    2 | . . W . . W . . |
    1 | . . . . . B . . |
      +-----------------+
        a b c d e f g h

  10. g4:d7 a4:d7

 11   +287  a4:d7 b6:e3 h3-f5 g3-d3 g5:e3 f1:c4 c7:c4
 13   +310  a4:d7 b6:e3 g5:e3 f3-e2 f2-f5 f8:f5 c2:f5 g6-g4 h4-h6

      +-----------------+
    8 | . . . B B B . . |
    7 | . . W W W . . . |
    6 | . B . B . . B . |
    5 | . . . . . . W . |
    4 | . . W . . . . W |
    3 | . . . . W B B W |
    2 | . . W . . W . . |
    1 | . . . . . B . . |
      +-----------------+
        a b c d e f g h

  11. f8-f4 c4:f4

 11   +345  c4:f4 b6:e3 c2-e4 g6:e4 h4:e4 g3:g5 h3-f5
 13   +446  c4:f4 b6:e3 c2-e4 g6:e4 h4:e4 g3:g5 c7-c6 f3-g4 e7:e3

      +-----------------+
    8 | . . . B B . . . |
    7 | . . W W W . . . |
    6 | . B . B . . B . |
    5 | . . . . . . W . |
    4 | . . . . . W . W |
    3 | . . . . W B B W |
    2 | . . W . . W . . |
    1 | . . . . . B . . |
      +-----------------+
        a b c d e f g h

  12. b6:e3 c2-e4

 11   +446  c2-e4 g6:e4 h4:e4 g3:g5 c7-c6 f3-g4 e7:e3
 13   +427  c2-e4 f1:h3 g5-f5 e8-g8 f2-e2 g6-h5 d7-g4 g8-e8 c7-c6

      +-----------------+
    8 | . . . B B . . . |
    7 | . . W W W . . . |
    6 | . . . B . . B . |
    5 | . . . . . . W . |
    4 | . . . . W W . W |
    3 | . . . . B B B W |
    2 | . . . . . W . . |
    1 | . . . . . B . . |
      +-----------------+
        a b c d e f g h

  13. f1:h3 c7-f7

 13   +474  g5-f5 g3-g5 f2-e2 g6-e6 c7-c6 e6-d5 e2-d3 e8-g8 f4:d6
 13  +1074  c7-f7 g6:e4 f7:f3 e4-f5 d7-b5 e3-c5 f2-e2 g3:g5 e7-e4

      +-----------------+
    8 | . . . B B . . . |
    7 | . . . W W W . . |
    6 | . . . B . . B . |
    5 | . . . . . . W . |
    4 | . . . . W W . W |
    3 | . . . . B B B B |
    2 | . . . . . W . . |
    1 | . . . . . . . . |
      +-----------------+
        a b c d e f g h

  14. d8-b8 f7:f3

 13  +1367  f7:f3 b8:f4 g5-f5 d6-f6 d7-g4 e3-g5 f5-d5 f6-d6 d5-f5

      +-----------------+
    8 | . B . . B . . . |
    7 | . . . W W . . . |
    6 | . . . B . . B . |
    5 | . . . . . . W . |
    4 | . . . . W W . W |
    3 | . . . . B W B B |
    2 | . . . . . W . . |
    1 | . . . . . . . . |
      +-----------------+
        a b c d e f g h

  15. b8:f4 e4:g6

  8  +1367  g5-f5 d6-f6 d7-g4 e3-g5 f5-d5 f6-d6 d5-f5 d6-f6
 13  +1367  g5-f5 d6-f6 d7-g4 e3-g5 f5-d5 f6-d6 d5-f5 d6-f6
 15 +32000  e4:g6 e8:g6 h4:f4 g6-f5 f3-g4 h3-g2 e7-e5 e3:e5 f2:f5
              g3-f3 f5-e4 g2-h3 g5:e5 f3-d3 e4-e6
 
 The search over the past few moves has been very thin, perhaps due to
 the presence of many forced moves.  As a result, the time normally
 needed for a 13-ply search was sufficient to complete 15-ply.  This
 is perhaps fortunate, as Mona had not yet found an improvement over
 the repetition of moves after g5-f5 (although draw detection may have
 prevented that line from actually being played).

      +-----------------+
    8 | . . . . B . . . |
    7 | . . . W W . . . |
    6 | . . . B . . W . |
    5 | . . . . . . W . |
    4 | . . . . . B . W |
    3 | . . . . B W B B |
    2 | . . . . . W . . |
    1 | . . . . . . . . |
      +-----------------+
        a b c d e f g h

  16. Resigns