Michel wrote:I think it is more critical for detecting draws. The following position is draw
[d]7k/5Q2/8/8/6r1/5K2/8/8 b - - 0 1[/d]
and it requires looking at very few position to prove it (less than 64x8). Yet it seems
difficult to see this with forward search.
Not difficult for stockfish.
difficult only to most programmers who probably do not understand how to use hash tables without bugs(and it is not because stockfish does more pruning because naum cannot see the draw even at iteration 30 and the same for Firebird and I will not be surprised if most programs cannot see the draw at iteration 28).
I suspect that there are cases when the buggy implementation of hash by programmers may lead to missing a draw by repetition forever so the program will never see the draw.
New game
[D]7k/5Q2/8/8/6r1/5K2/8/8 b - - 0 1
Analysis by Stockfish 1.7 JA:
1...Rg4-g8
+- (7.17) Depth: 1 00:00:00
1...Rg4-g1 2.Kf3-e4
+- (7.27) Depth: 2 00:00:00
1...Rg4-g7 2.Qf7-f8+ Kh8-h7
+- (7.22) Depth: 2 00:00:00
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4
+- (7.32) Depth: 3 00:00:00
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4 Rg7-g8
+- (7.32) Depth: 4 00:00:00
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4 Rg7-g8 4.Qf8-f6
+- (7.32) Depth: 5 00:00:00
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4 Rg7-g8 4.Qf8-f6 Rg8-g7 5.Kf4-e5
+- (7.32) Depth: 6 00:00:00 4kN
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4 Rg7-g8 4.Qf8-f6 Rg8-g7 5.Kf4-e5 Kh7-g8
+- (7.32) Depth: 7 00:00:00 9kN
1...Rg4-g7 2.Qf7-f8+ Kh8-h7 3.Kf3-f4 Rg7-g8 4.Qf8-f7+ Rg8-g7 5.Qf7-h5+ Kh7-g8 6.Qh5-e8+ Kg8-h7 7.Kf4-f5 Kh7-h6
+- (7.37) Depth: 8 00:00:01 31kN
1...Rg4-g1 2.Qf7-h5+ Kh8-g8 3.Kf3-f4 Rg1-c1 4.Qh5-e8+ Kg8-g7 5.Kf4-f5 Rc1-f1+ 6.Kf5-g5 Rf1-f6
+- (7.32) Depth: 8 00:00:01 46kN
1...Rg4-g1 2.Qf7-h5+ Kh8-g8 3.Qh5-e8+ Kg8-h7 4.Qe8-e4+ Kh7-g8 5.Qe4-c4+ Kg8-h7 6.Kf3-f4 Rg1-g8 7.Qc4-f7+ Rg8-g7 8.Qf7-h5+ Kh7-g8 9.Qh5-e8+ Kg8-h7 10.Kf4-f5 Kh7-h6
+- (7.37) Depth: 9 00:00:01 95kN
1...Rg4-g1 2.Qf7-h5+ Kh8-g8 3.Qh5-e8+ Kg8-h7 4.Qe8-e4+ Kh7-g8 5.Qe4-c4+ Kg8-h7 6.Kf3-f4 Rg1-g8 7.Qc4-f7+ Rg8-g7 8.Qf7-h5+ Kh7-g8 9.Qh5-e8+ Kg8-h7 10.Kf4-f5 Kh7-h6 11.Qe8-f8
+- (7.37) Depth: 10 00:00:01 162kN
1...Rg4-g1 2.Qf7-h5+ Kh8-g8 3.Qh5-e8+ Kg8-h7 4.Qe8-e4+ Kh7-g8 5.Qe4-c4+ Kg8-h7 6.Kf3-f4 Rg1-g8 7.Qc4-f7+ Rg8-g7 8.Qf7-h5+ Kh7-g8 9.Qh5-e8+ Kg8-h7 10.Kf4-f5 Kh7-h6 11.Qe8-e3+ Kh6-h7 12.Qe3-e8
+- (7.42) Depth: 11 00:00:01 235kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5xg5
+- (7.29) Depth: 11 00:00:01 249kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e5 Rg4-g5+ 8.Ke5-d6 Rg5-g1 9.Qf7-f6+ Kh8-h7 10.Kd6-e6 Rg1-g6
+- (7.32) Depth: 11 00:00:01 260kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e5 Rg4-g5+ 8.Ke5-d4 Rg5-g4+ 9.Kd4-c5 Rg4-g7 10.Qf7-h5+ Rg7-h7 11.Qh5-e5+ Kh8-g8 12.Kc5-d6 Kg8-f7
+- (7.27) Depth: 12 00:00:01 304kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e5 Rg4-g5+ 8.Ke5-d4 Rg5-g4+ 9.Kd4-c5 Rg4-g7 10.Qf7-h5+ Rg7-h7 11.Qh5-e5+ Kh8-g8 12.Kc5-d6 Kg8-f7 13.Qe5-f5+ Kf7-g7 14.Kd6-e6
+- (7.27) Depth: 13 00:00:01 330kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2xg2
+- (7.19) Depth: 14 00:00:01 385kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g6 10.Qf7-f8+ Kh8-h7 11.Kc5-d5 Rg6-g1 12.Qf8-e7+ Kh7-h6 13.Qe7-e3+ Rg1-g5+ 14.Kd5-e6 Kh6-g6
+- (7.27) Depth: 14 00:00:01 401kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2-e3 Rg2-g3+ 4.Ke3-d4 Rg3-g4+ 5.Kd4-c5 Rg4-g5+ 6.Kc5-d6 Rg5-g6+ 7.Kd6-e5 Rg6-g5+ 8.Ke5-d4 Rg5-g4+
+- (7.19) Depth: 15 00:00:01 428kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-d6 Rg5-g6+ 11.Kd6-e5 Rg6-g5+ 12.Ke5-d4 Rg5-g4+
+- (7.10) Depth: 15 00:00:01 436kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-c4 Rg5-g4+ 11.Kc4-c3 Rg4-g3+ 12.Kc3-b2 Rg3-g7 13.Qf7-f8+ Kh8-h7 14.Kb2-c3 Kh7-h6
+- (7.07) Depth: 15 00:00:01 445kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-c4 Rg5-g4+ 11.Kc4-c3 Rg4-g3+ 12.Kc3-b4 Rg3-g4+ 13.Kb4-b5 Rg4-g8 14.Qf7-f4 Rg8-g6 15.Kb5-c5 Rg6-a6 16.Kc5-d5
+- (7.17) Depth: 16 00:00:01 474kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-c4 Rg5-g4+ 11.Kc4-c3 Rg4-g3+ 12.Kc3-b4 Rg3-g4+ 13.Kb4-b5 Rg4-g5+ 14.Kb5-a6 Rg5-g7 15.Qf7-f6 Kh8-h7 16.Ka6-b5 Rg7-g4 17.Kb5-c5
+- (7.12) Depth: 17 00:00:01 540kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-c4 Rg5-g4+ 11.Kc4-c3 Rg4-g3+ 12.Kc3-b4 Rg3-g4+ 13.Kb4-b5 Rg4-g5+ 14.Kb5-a6 Rg5-g7 15.Qf7-f6 Kh8-h7 16.Ka6-b5 Rg7-g4 17.Kb5-c5
+- (7.12) Depth: 18 00:00:01 607kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2-f1 Rg2-g1+ 4.Kf1xg1
+- (7.03) Depth: 19 00:00:01 646kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-c5 Rg4-g5+ 10.Kc5-c4 Rg5-g4+ 11.Kc4-c3 Rg4-g3+ 12.Kc3-b4 Rg3-g4+ 13.Kb4-b5 Rg4-g5+ 14.Kb5-a6 Rg5-g6+ 15.Ka6-a5 Rg6-g5+ 16.Ka5-a4 Rg5-g4+ 17.Ka4-b3
+- (7.07) Depth: 19 00:00:01 664kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-e5 Rg4-g5+ 10.Ke5-d6 Rg5-g6+ 11.Kd6-c5 Rg6-g5+ 12.Kc5-c4 Rg5-g4+ 13.Kc4-c3 Rg4-g3+ 14.Kc3-b4 Rg3-g4+ 15.Kb4-b5 Rg4-g5+ 16.Kb5-a6 Rg5-g6+ 17.Ka6-a5
+- (7.07) Depth: 20 00:00:01 731kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-f5 Rg6-g5+ 6.Kf5-f4 Rg5-g4+ 7.Kf4-e3 Rg4-g3+ 8.Ke3-d4 Rg3-g4+ 9.Kd4-e5 Rg4-g5+ 10.Ke5-d6 Rg5-g6+ 11.Kd6-c5 Rg6-g5+ 12.Kc5-c4 Rg5-g4+ 13.Kc4-c3 Rg4-g3+ 14.Kc3-b4 Rg3-g4+ 15.Kb4-b5 Rg4-g5+ 16.Kb5-a6 Rg5-g6+ 17.Ka6-a5
+- (7.12) Depth: 21 00:00:02 843kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2-e3 Rg2-g3+ 4.Ke3-d4 Rg3-g4+ 5.Kd4-d5 Rg4-g5+ 6.Kd5-e6 Rg5-g6+ 7.Qf7xg6
+- (7.03) Depth: 22 00:00:02 972kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-d4 Rg5-g4+ 9.Kd4-c3 Rg4-g3+ 10.Kc3-b4 Rg3-g4+ 11.Kb4-b3 Rg4-g3+ 12.Kb3-c2 Rg3-g2+ 13.Kc2-d3 Rg2-g3+ 14.Kd3-e2 Rg3-g2+ 15.Ke2-e3 Rg2-g3+ 16.Ke3-d2 Rg3-g2+ 17.Kd2-c1
+- (7.07) Depth: 22 00:00:02 1065kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-d4 Rg5-g4+ 9.Kd4-c3 Rg4-g3+ 10.Kc3-b4 Rg3-g4+ 11.Kb4-b3 Rg4-g3+ 12.Kb3-c2 Rg3-g2+ 13.Kc2-d3 Rg2-g3+ 14.Kd3-e2 Rg3-g2+ 15.Ke2-e3 Rg2-g3+ 16.Ke3-d2 Rg3-g2+ 17.Kd2-c1
+- (7.07) Depth: 23 00:00:03 1275kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-b4 Rg5-g4+ 9.Kb4-b3 Rg4-g3+ 10.Kb3-c2 Rg3-g2+ 11.Kc2-d3 Rg2-g3+ 12.Kd3-e2 Rg3-g2+ 13.Ke2-e3 Rg2-g3+ 14.Ke3-d2 Rg3-g2+ 15.Kd2-c1 Rg2-c2+ 16.Kc1-b1 Rc2-b2+ 17.Kb1-a1
+- (7.12) Depth: 24 00:00:03 1514kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2-e3 Rg2-g3+ 4.Ke3-d2 Rg3-g2+ 5.Kd2-c1 Rg2-g1+ 6.Kc1-b2 Rg1-g2+ 7.Kb2-c3 Rg2-g3+ 8.Kc3-c4 Rg3-g4+ 9.Kc4-c5 Rg4-g5+ 10.Kc5-b4 Rg5-g4+ 11.Kb4-b3 Rg4-g3+ 12.Kb3-b2 Rg3-g2+
+- (7.03) Depth: 25 00:00:03 1652kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-b4 Rg5-g4+ 9.Kb4-b3 Rg4-g3+ 10.Kb3-b2 Rg3-g2+ 11.Kb2-c3 Rg2-g3+ 12.Kc3-c4 Rg3-g4+ 13.Kc4-d3 Rg4-g3+ 14.Kd3-d4 Rg3-g4+ 15.Kd4-e3 Rg4-g3+ 16.Ke3-d2 Rg3-g2+ 17.Kd2-c1
+- (7.12) Depth: 25 00:00:03 1897kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g2+ 3.Kf2-e3 Rg2-g3+ 4.Ke3-d2 Rg3-g2+ 5.Kd2-c1 Rg2-g1+ 6.Kc1-c2 Rg1-g2+ 7.Kc2-d3 Rg2-g3+ 8.Kd3-c4 Rg3-g4+ 9.Kc4-c5 Rg4-g5+ 10.Kc5-b4 Rg5-g4+ 11.Kb4-b3 Rg4-g3+ 12.Kb3-b2 Rg3-g2+ 13.Kb2-c3 Rg2-g3+ 14.Kc3-c4
+- (7.03) Depth: 26 00:00:03 1953kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-b4 Rg5-g4+ 9.Kb4-b3 Rg4-g3+ 10.Kb3-b2 Rg3-g2+ 11.Kb2-c3 Rg2-g3+ 12.Kc3-c4 Rg3-g4+ 13.Kc4-d3 Rg4-g3+ 14.Kd3-d2 Rg3-g2+ 15.Kd2-c1 Rg2-g1+ 16.Kc1-c2 Rg1-g2+ 17.Kc2-b1
+- (7.17) Depth: 26 00:00:03 2686kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-e6 Rg5-g6+ 5.Ke6-e5 Rg6-g5+ 6.Ke5-d6 Rg5-g6+ 7.Kd6-c5 Rg6-g5+ 8.Kc5-b4 Rg5-g4+ 9.Kb4-b3 Rg4-g3+ 10.Kb3-b2 Rg3-g2+ 11.Kb2-c3 Rg2-g3+ 12.Kc3-c4 Rg3-g4+ 13.Kc4-d3 Rg4-g3+ 14.Kd3-d2 Rg3-g2+ 15.Kd2-c1 Rg2-g1+ 16.Kc1-c2 Rg1-g2+ 17.Kc2-b1
+- (7.17) Depth: 27 00:00:03 3270kN
1...Rg4-g3+ 2.Kf3-f2 Rg3-g7 3.Qf7-e8+ Rg7-g8 4.Qe8-e7 Rg8-g7 5.Qe7-e6
+- (7.08) Depth: 28 00:00:03 3486kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-c3 Rg4-g3+ 6.Kc3-c4 Rg3-g4+ 7.Kc4-d5
+- (6.96) Depth: 28 00:00:03 3575kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-c3 Rg4-g3+ 6.Kc3-c4 Rg3-g4+ 7.Kc4-d5
+- (2.82) Depth: 28 00:00:03 3580kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-c3 Rg4-g3+ 6.Kc3-c4 Rg3-g4+ 7.Kc4-d5
+- (2.82) Depth: 28 00:00:03 3580kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-c3 Rg4-g3+ 6.Kc3-c4 Rg3-g4+ 7.Kc4-d5
+- (2.82) Depth: 28 00:00:03 3580kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-c3 Rg4-g3+ 6.Kc3-c4 Rg3-g4+ 7.Kc4-d5
+- (2.82) Depth: 28 00:00:03 3580kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4xg4
+- (1.69) Depth: 28 00:00:03 3601kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4xg4
= (0.00) Depth: 28 00:00:03 3628kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4xg4
= (0.00) Depth: 29 00:00:04 3663kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4xg4
= (0.00) Depth: 30 00:00:04 3716kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
± (1.13) Depth: 31 00:00:04 3790kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 31 00:00:04 3875kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 32 00:00:04 3875kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 33 00:00:04 3942kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 34 00:00:05 4031kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 35 00:00:05 4145kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 36 00:00:05 4286kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 37 00:00:05 4462kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 38 00:00:05 4675kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 39 00:00:06 4922kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 40 00:00:07 5239kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 41 00:00:07 5571kN
1...Rg4-g3+ 2.Kf3-e4 Rg3-g4+ 3.Ke4-d5 Rg4-g5+ 4.Kd5-d4 Rg5-g4+ 5.Kd4-e5 Rg4-g5+ 6.Ke5-e6 Rg5-g6+ 7.Ke6-f5 Rg6-g5+ 8.Kf5-f4 Rg5-g4+ 9.Kf4-e3 Rg4-g3+ 10.Ke3-e2 Rg3-g2+ 11.Ke2-d3 Rg2-g3+ 12.Kd3-d2 Rg3-g2+ 13.Kd2-c1 Rg2-g1+ 14.Kc1-c2 Rg1-g2+ 15.Kc2-b3 Rg2-g3+ 16.Kb3-b4 Rg3-g4+ 17.Kb4-c5
= (0.00) Depth: 42 00:00:08 6032kN
(, 13.04.2010)