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Subject: Gambit Tiger fails to win won game allows position to become blocked

Author: James B. Shearer

Date: 23:26:08 05/01/01


    I was playing a Gambit Tiger 2.0 clone on ICC a couple of days ago.  I lost
my queen (for 2 pieces) before move 20 but Gambit Tiger failed to convert the
win allowing the position to become totally blocked leading to a draw by the 50
move rule at move 192.  It seems there must be problems with the evaluation
function for blocked positions (particularly when up material).
    This was the position after I lost my queen.
[D]r1b1rnk1/pp4bp/2p1p1p1/2P2p2/3PpP1Q/5P3/PP4PP/RNR3K1 w - -
    and this was the final position
[D]r7/1p2bk1p/p1p1p1pP/PnPr1pP1/1PKPpP2/4P3/1R1Q3R/8 b - -
    I have appended the complete game to this post.
                           James B. Shearer
..............................................................................
heatstroke (2992) vs. rabid (2499) --- 2001.04.30 03:10:56
Rated blitz match, initial time: 3 minutes, increment: 2 seconds

  1.  Nf3      (0:01)    d5       (0:01)
  2.  d4       (0:00)    c6       (0:04)
  3.  Bg5      (0:00)    f6       (0:02)
  4.  Bf4      (0:04)    e6       (0:01)
  5.  e3       (0:03)    Bd6      (0:02)
  6.  Bd3      (0:03)    f5       (0:02)
  7.  Ne5      (0:03)    Nf6      (0:02)
  8.  O-O      (0:05)    O-O      (0:02)
  9.  c4       (0:03)    g6       (0:19)
 10.  c5       (0:03)    Bc7      (0:03)
 11.  Bh6      (0:03)    Re8      (0:04)
 12.  f4       (0:06)    Nbd7     (0:04)
 13.  Bg5      (0:06)    Qe7      (0:06)
 14.  Qe1      (0:04)    Qg7      (0:03)
 15.  Qh4      (0:00)    Ne4      (0:14)
 16.  Bxe4     (0:12)    dxe4     (0:05)
 17.  Rc1      (0:00)    Nf8      (0:12)
 18.  Bf6      (0:03)    Bxe5     (0:11)
 19.  Bxg7     (0:08)    Bxg7     (0:02)
 20.  Nd2      (0:02)    Nd7      (0:03)
 21.  Nc4      (0:03)    Nf6      (0:05)
 22.  a3       (0:00)    Nd5      (0:03)
 23.  Qe1      (0:06)    Bd7      (0:05)
 24.  Ne5      (0:08)    Red8     (0:07)
 25.  b4       (0:04)    a6       (0:02)
 26.  g4       (0:06)    Be8      (0:08)
 27.  h3       (0:00)    Kf8      (0:06)
 28.  Ra2      (0:03)    Kg8      (0:02)
 29.  Nc4      (0:03)    Rab8     (0:07)
 30.  g5       (0:06)    Bf8      (0:07)
 31.  Rh2      (0:04)    Bg7      (0:02)
 32.  Rcc2     (0:04)    Bf8      (0:02)
 33.  Rhe2     (0:03)    Bg7      (0:02)
 34.  Kf1      (0:03)    Bf8      (0:02)
 35.  Red2     (0:03)    Bg7      (0:01)
 36.  Rg2      (0:05)    Bf8      (0:02)
 37.  Ke2      (0:03)    Bg7      (0:01)
 38.  Rg1      (0:05)    Bf8      (0:02)
 39.  h4       (0:03)    Bg7      (0:06)
 40.  Nd6      (0:03)    Bf8      (0:05)
 41.  Nxe8     (0:00)    Rxe8     (0:03)
 42.  h5       (0:00)    Bg7      (0:15)
 43.  Kf1      (0:00)    Kf7      (0:05)
 44.  Rh1      (0:04)    Rh8      (0:03)
 45.  Rch2     (0:00)    Rbc8     (0:07)
 46.  Ke2      (0:04)    Rb8      (0:02)
 47.  Qc1      (0:00)    Rbc8     (0:03)
 48.  Qf1      (0:00)    Rb8      (0:02)
 49.  Kf2      (0:04)    Rbc8     (0:02)
 50.  Qd1      (0:06)    Rb8      (0:02)
 51.  Qe2      (0:04)    Rbc8     (0:02)
 52.  Ke1      (0:03)    Rb8      (0:02)
 53.  Kd2      (0:05)    Rbc8     (0:01)
 54.  Qe1      (0:18)    Rb8      (0:02)
 55.  Qc1      (0:02)    Rbc8     (0:02)
 56.  Ke2      (0:04)    Rb8      (0:02)
 57.  Qe1      (0:03)    Rbc8     (0:02)
 58.  Kf2      (0:01)    Rb8      (0:02)
 59.  Qd1      (0:02)    Rbc8     (0:02)
 60.  Qe2      (0:05)    Rb8      (0:01)
 61.  Qe1      (0:07)    Rbc8     (0:01)
 62.  Qc1      (0:02)    Rb8      (0:01)
 63.  Qc2      (0:04)    Rbc8     (0:01)
 64.  Qb1      (0:02)    Rb8      (0:01)
 65.  Qb2      (0:02)    Rbc8     (0:01)
 66.  Ke2      (0:03)    Rb8      (0:01)
 67.  Kd2      (0:02)    Rbc8     (0:01)
 68.  Qc1      (0:01)    Rb8      (0:01)
 69.  Qg1      (0:02)    Rbc8     (0:01)
 70.  Kc2      (0:02)    Rb8      (0:01)
 71.  Kb3      (0:02)    Rbc8     (0:01)
 72.  Qf2      (0:02)    Rb8      (0:02)
 73.  Qe2      (0:04)    Rbc8     (0:01)
 74.  Qe1      (0:02)    Rb8      (0:01)
 75.  Qg3      (0:02)    Rbc8     (0:01)
 76.  Ka4      (0:03)    Nc3+     (0:10)
 77.  Ka5      (0:00)    Nd5      (0:09)
 78.  Qf2      (0:00)    Rb8      (0:10)
 79.  Qg1      (0:04)    Rbc8     (0:02)
 80.  Qc1      (0:03)    Rb8      (0:02)
 81.  Qd2      (0:07)    Rbc8     (0:01)
 82.  Ka4      (0:03)    Rb8      (0:03)
 83.  Kb3      (0:04)    Rbc8     (0:01)
 84.  Qe2      (0:02)    Rb8      (0:02)
 85.  Qe1      (0:02)    Rbc8     (0:01)
 86.  Ka4      (0:02)    Rb8      (0:02)
 87.  Qc1      (0:02)    Rbc8     (0:02)
 88.  Kb3      (0:00)    Rb8      (0:02)
 89.  a4       (0:02)    Ra8      (0:11)
 90.  Qd2      (0:02)    Rhg8     (0:08)
 91.  Qe1      (0:02)    Rh8      (0:02)
 92.  a5       (0:06)    Rhg8     (0:04)
 93.  Qd2      (0:03)    Rh8      (0:04)
 94.  Qc1      (0:00)    Rhg8     (0:02)
 95.  Qe1      (0:03)    Rh8      (0:03)
 96.  Qg3      (0:00)    Rab8     (0:02)
 97.  Kc4      (0:00)    Rbc8     (0:01)
 98.  Qf2      (0:03)    Rb8      (0:01)
 99.  Kb3      (0:02)    Rbc8     (0:02)
100.  Ka3      (0:00)    Rb8      (0:01)
101.  Qe2      (0:01)    Rbc8     (0:01)
102.  Qe1      (0:03)    Rb8      (0:02)
103.  Rh3      (0:03)    Rhg8     (0:03)
104.  Kb3      (0:03)    Rbc8     (0:02)
105.  Qf2      (0:04)    Rb8      (0:01)
106.  Qg3      (0:02)    Rbc8     (0:02)
107.  Qe1      (0:02)    Rb8      (0:02)
108.  Kc4      (0:02)    Rbc8     (0:01)
109.  Qg1      (0:02)    Rb8      (0:01)
110.  Qg2      (0:02)    Rbc8     (0:01)
111.  Qd2      (0:02)    Rb8      (0:02)
112.  Qf2      (0:02)    Rbc8     (0:01)
113.  Qe1      (0:02)    Rb8      (0:01)
114.  Qd2      (0:02)    Rbc8     (0:01)
115.  Qf2      (0:02)    Rb8      (0:01)
116.  Kb3      (0:02)    Rbc8     (0:01)
117.  Qe2      (0:02)    Rb8      (0:02)
118.  Qg2      (0:02)    Rbc8     (0:01)
119.  Qg1      (0:02)    Rb8      (0:01)
120.  Qc1      (0:02)    Rbc8     (0:02)
121.  Qd2      (0:03)    Rb8      (0:03)
122.  Ka3      (0:02)    Ra8      (0:02)
123.  Ka4      (0:02)    Rab8     (0:02)
124.  Qe1      (0:02)    Ra8      (0:01)
125.  Qc1      (0:02)    Rab8     (0:01)
126.  Ka3      (0:01)    Ra8      (0:02)
127.  Qc2      (0:03)    Rab8     (0:01)
128.  Qf2      (0:00)    Ra8      (0:01)
129.  Qg3      (0:02)    Rab8     (0:02)
130.  Qe1      (0:02)    Ra8      (0:02)
131.  R1h2     (0:03)    Rab8     (0:01)
132.  Kb3      (0:02)    Ra8      (0:01)
133.  Qg3      (0:02)    Rab8     (0:02)
134.  Qf2      (0:03)    Ra8      (0:01)
135.  Qe1      (0:04)    Rab8     (0:03)
136.  Qg3      (0:02)    Ra8      (0:01)
137.  Qg1      (0:05)    Rab8     (0:01)
138.  Qc1      (0:02)    Ra8      (0:01)
139.  Ka3      (0:02)    Rab8     (0:01)
140.  Qe1      (0:02)    Ra8      (0:01)
141.  Rg3      (0:02)    Rab8     (0:02)
142.  h6       (0:02)    Bf8      (0:04)
143.  Kb3      (0:01)    Be7      (0:02)
144.  Rg1      (0:02)    Ra8      (0:03)
145.  Rd2      (0:02)    Rgc8     (0:03)
146.  Rgg2     (0:03)    Bd8      (0:03)
147.  Kc4      (0:00)    Kf8      (0:05)
148.  Rc2      (0:02)    Kf7      (0:01)
149.  Kb3      (0:02)    Kf8      (0:02)
150.  Rb2      (0:06)    Kf7      (0:02)
151.  Qg3      (0:10)    Be7      (0:05)
152.  Rgd2     (0:02)    Rd8      (0:03)
153.  Rh2      (0:02)    Nc7      (0:05)
154.  Rhe2     (0:02)    Rd5      (0:06)
155.  Kc4      (0:01)    Nb5      (0:03)
156.  Ra2      (0:03)    Bf8      (0:03)
157.  Rh2      (0:01)    Be7      (0:01)
158.  Rhd2     (0:03)    Bf8      (0:02)
159.  Rf2      (0:02)    Be7      (0:02)
160.  Qg2      (0:03)    Bf8      (0:01)
161.  Rf1      (0:02)    Be7      (0:02)
162.  Rh1      (0:02)    Bf8      (0:01)
163.  Re1      (0:01)    Be7      (0:01)
164.  Qg3      (0:03)    Bf8      (0:01)
165.  Rc1      (0:02)    Be7      (0:01)
166.  Rd1      (0:04)    Bf8      (0:01)
167.  Qg2      (0:02)    Be7      (0:01)
168.  Re1      (0:02)    Bf8      (0:01)
169.  Rb2      (0:01)    Be7      (0:01)
170.  Ree2     (0:04)    Bf8      (0:02)
171.  Ra2      (0:02)    Be7      (0:01)
172.  Red2     (0:01)    Bf8      (0:01)
173.  Kb3      (0:01)    Be7      (0:01)
174.  Qg1      (0:03)    Bf8      (0:01)
175.  Kc4      (0:02)    Be7      (0:02)
176.  Qa1      (0:04)    Bf8      (0:02)
177.  Qe1      (0:02)    Be7      (0:01)
178.  Kb3      (0:03)    Bf8      (0:01)
179.  Qg3      (0:01)    Be7      (0:02)
180.  Re2      (0:02)    Bf8      (0:01)
181.  Qe1      (0:02)    Be7      (0:01)
182.  Rg2      (0:02)    Bf8      (0:01)
183.  Qc1      (0:03)    Be7      (0:01)
184.  Rac2     (0:01)    Bf8      (0:01)
185.  Rb2      (0:01)    Be7      (0:02)
186.  Rbd2     (0:01)    Bf8      (0:01)
187.  Rh2      (0:02)    Be7      (0:01)
188.  Qd1      (0:01)    Bf8      (0:01)
189.  Rb2      (0:02)    Be7      (0:01)
190.  Qc1      (0:01)    Bf8      (0:01)
191.  Qd2      (0:01)    Be7      (0:01)
192.  Kc4      (0:00)
       {Game drawn by the 50 move rule} 1/2-1/2



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