Ippolit can not solved Mate in 2

[Edward German]

Matt2_Nullmove!, 2001
[d]8/4B3/5K1p/5p1k/5Pb1/5p1p/5P1P/8 w - - 0 1

That is a mate in 2!

Analysis by IPPOLIT 0.080a:

1.Lf8
= (-0.20) Tiefe: 1/3 00:00:00
1.Ld6
= (-0.14) Tiefe: 1/3 00:00:00
1.Lc5
= (-0.13) Tiefe: 1/3 00:00:00
1.Lc5 Kh4
= (-0.07) Tiefe: 2/4 00:00:00
1.Lc5 Kh4 2.Ke5
= (-0.12) Tiefe: 3/4 00:00:00
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Le7+ Kh5
= (0.11) Tiefe: 4/9 00:00:00
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Le7+ Kh5
= (0.11) Tiefe: 5/10 00:00:00
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Le7+ Kh5
= (0.11) Tiefe: 6/12 00:00:00 0kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5
= (0.14) Tiefe: 7/13 00:00:00 1kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5
= (0.14) Tiefe: 8/13 00:00:00 1kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5
= (0.22) Tiefe: 9/15 00:00:00 2kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5
+/= (0.30) Tiefe: 9/15 00:00:00 2kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 h5 5.f5 Kg5 6.f6
+/= (0.31) Tiefe: 9/17 00:00:00 3kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5 Lf7 6.f6 Kg5
+/= (0.32) Tiefe: 10/17 00:00:00 4kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Kg4 5.f5 Lf7 6.Le3 Kh5 7.Ld2
+/= (0.29) Tiefe: 11/19 00:00:00 5kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Le8 4.Ke5 Lf7 5.f5 Kh5 6.Le3 Le8 7.Lf4 Lc6
+/= (0.34) Tiefe: 12/20 00:00:00 9kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Kf6 Lc4 5.f5 Kg4 6.Ke5 Lf7 7.Le3 Kh5 8.Ld2 Kg4 9.Lxh6
+/= (0.29) Tiefe: 13/20 00:00:00 15kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 Kh5 6.Le3 La2 7.Lf4 Lc4 8.Lc1 Lf7 9.Ld2 Kg4 10.Lxh6
+/= (0.35) Tiefe: 14/22 00:00:00 20kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 Kh5 6.Ld4 Lc4 7.Le3 La2 8.Lf4 Lc4 9.Lc1 Lf7 10.Ld2 Kg4 11.Lxh6
+/= (0.35) Tiefe: 15/22 00:00:00 29kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 Kh5 6.Le3 La2 7.Lf4 Lf7 8.Lc1 Lc4 9.Le3 La2
+/= (0.35) Tiefe: 16/23 00:00:00 41kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 Kh5 6.Le3 La2 7.Lf4 Lf7 8.Lc1 Lc4 9.Le3 La2
+/= (0.35) Tiefe: 17/23 00:00:00 53kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 Kh5 6.Le3 La2 7.Lf4 Lf7 8.Lc1 Lc4 9.Le3 La2
+/= (0.35) Tiefe: 18/25 00:00:00 76kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 La2 6.Le3 Kh5 7.Lf4 Lb1 8.Ld2 Ld3 9.Lc1 Lc4 10.Le3 La2
+/= (0.35) Tiefe: 19/26 00:00:00 128kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 La2 6.Le3 Kh5 7.Lf4 Lb1 8.Ld2 Ld3 9.Ke6 Lc4+ 10.Ke7 Ld5 11.Kf6 Kg4 12.Lxh6
+/= (0.35) Tiefe: 20/28 00:00:00 181kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 La2 6.Le3 Kh5 7.Kf4 Ld5 8.Lc1 Lc6 9.Ke5 Le8 10.Le3 Lb5 11.Lf4 Le8 12.Lc1 Ld7 13.Ld2 Le8 14.Le3
+/= (0.35) Tiefe: 21/31 00:00:00 318kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 La2 6.Le3 Kh5 7.Ld4 Kg5 8.Lb2 Kh5 9.Lc1 Lb3 10.Le3 La2
+/= (0.35) Tiefe: 22/33 00:00:00 517kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.Lf4 Le8 8.Lc1 La4 9.f6 Lb3 10.Le3 Kh5 11.Ld4 Kg6 12.Kf4 Kf7 13.Kxf3 Le6 14.Ke4 Ld7 15.Ke5 Le6 16.Le3
+/= (0.34) Tiefe: 23/34 00:00:00 1560kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ke4 Lc2+ 9.Kd4 Lb3 10.Ke5 Kh5 11.Ld4 Kg6 12.Kf4 Kf7 13.Kxf3 Le6 14.Ke4 Ld7 15.Ke5 Le6 16.Le3
+/= (0.34) Tiefe: 24/34 00:00:00 1839kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.Ld2 Lb3 8.f6 Lc4 9.Ke4 Lb3 10.Lc3 Lc2+ 11.Ke5 Lb3 12.Lb2 Lf7 13.Ke4 Le8 14.Lc1 Lg6+ 15.Ke5 Lf7 16.Lf4 Kh5
+/= (0.34) Tiefe: 25/35 00:00:01 2160kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Lc1 Lg8 9.Ke4 Lf7 10.Lb2 Lg6+ 11.Ke5 Lf7 12.Ke4
+/= (0.34) Tiefe: 26/41 00:00:01 2524kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Lc1 Lg8 9.Ke4 Lf7 10.Le3 Lb3 11.Ld4 Lc2+ 12.Ke5 Lb3 13.Lb2 Lf7 14.Ke4 Lg6+ 15.Ke5 Lf7
+/= (0.34) Tiefe: 27/41 00:00:01 2992kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ke4 Lc2+ 9.Kd4 Lb3 10.Ke5 La2 11.Ld2 Lg8 12.Ke4 Lb3 13.Lc3 Lc2+ 14.Ke5 Lb3 15.Lb2 Lf7 16.Ke4 Lg6+
+/= (0.34) Tiefe: 28/41 00:00:01 3568kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Lc1 Lg8 9.Ke4 Lb3 10.Lb2 Lc2+ 11.Ke5 Lb3 12.Lc3 Lf7 13.Ld2 Lc4 14.Ke4 Lb3 15.Lc3 Lc2+ 16.Ke5 Lb3
+/= (0.34) Tiefe: 29/41 00:00:02 4407kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le7 h4 7.Lb4 Lb3 8.f6 Kg5 9.Ld2+ Kg6 10.Lc3 Kg5 11.Ke4 Kg4 12.Ld2 Lc2+ 13.Ke5 Lb3 14.Lc1 Lg8 15.Ke4 Lb3 16.Lb2 Lc2+
+/= (0.34) Tiefe: 30/41 00:00:03 5830kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Ke4 h4 7.Le3 Le8 8.Ke5 Lf7 9.f6 Lb3 10.Lc1 Lg8 11.Ke4 Lb3 12.Lb2 Lc2+ 13.Ke5 Lb3 14.Lc3 Lf7 15.Ld2 Lc4 16.Ke4 Lb3
+/= (0.34) Tiefe: 31/51 00:00:03 7278kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.Lc1 Lb3 8.f6 Lg8 9.Ke4 Lb3 10.Lb2 Lc2+ 11.Ke5 Lb3 12.Lc3 Lf7 13.Ld2 Lc4 14.Ke4 Lb3 15.Lc3 Lc2+ 16.Ke5 Lb3
+/= (0.34) Tiefe: 32/51 00:00:04 9114kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ke4 Lc2+ 9.Kd4 Lb3 10.Ke5 La2 11.Ld2 Lg8 12.Ke4 Lh7+ 13.Kd5 Lg8+ 14.Ke5 Lb3 15.Ke4 Lc2+ 16.Ke5 Lb3
+/= (0.34) Tiefe: 33/51 00:00:06 11703kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ld4 Lf7 9.Lb2 Kg5 10.Lc3 Le8 11.Ke4 Lc6+ 12.Kd4 Le8 13.Ke3 Lh5 14.Ke4 Kg4 15.Ke5 Lf7 16.Ld2 Lc4
+/= (0.34) Tiefe: 34/51 00:00:07 15274kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ld4 Lf7 9.Ke4 Lg6+ 10.Ke3 Lh5 11.Lb2 Kf5 12.La1 Kg5 13.Ke4 Kg4 14.Ke5 Lf7 15.Lb2 Kg5 16.Lc3 Le8
+/= (0.34) Tiefe: 35/51 00:00:09 18785kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le7 h4 7.Lb4 Lb3 8.f6 Kg5 9.Lc5 Lf7 10.Ld4 Lb3 11.Ke4 Kg4 12.Lb2 Lc2+ 13.Ke5 Lb3 14.Lc3 Lf7 15.Ld2 Lc4 16.Ke4 Lb3
+/= (0.34) Tiefe: 36/57 00:00:13 26688kN
1.Lc5 Kh4 2.Kg6 Lh5+ 3.Kxf5 Lf7 4.Ke5 Kg4 5.f5 h5 6.Le3 h4 7.f6 Lb3 8.Ke4 Lc2+ 9.Kd4 Lb3 10.Ke5 La2 11.Ld2 Lg8 12.Lc3 Lf7 13.Ld4 Kg5 14.Lc5 Kg4 15.Lf8 Kg5 16.La3 Kg6
+/= (0.34) Tiefe: 37/57 00:00:17 34024kN

[Michel]

RobboLito solves it immediately.

Seems that RobboLito is more that a simple refactoring of Ippolit....

[Edward German]

RobboLito solves it immediately.

Seems that RobboLito is more that a simple refactoring of Ippolit....

Interesting and strong!

This Engine I need testing.

[Kurt Utzinger]

Hi Eduard
Unbelievable but true.
Regards
Kurt

[Edward German]

Hi Eduard
Unbelievable but true.
Regards
Kurt

True Kurt!

However: There we're not sleeping, see here:

8/4B3/5K1p/5p1k/5Pb1/5p1p/5P1P/8 w - -

Engine: RobboLito 0084:

30/31 0:00 +M2 1.Ld8 Kh4 2.Kg6+ (2.400.511) 2794

31/31 0:01 +M2 1.Ld8 Kh4 2.Kg6+ (2.957.558) 2743

31/31 0:01 +M2 1.Ld8 Kh4 2.Kg6+ (3.342.604) 2778

32/33 0:01 +M2 1.Ld8 Kh4 2.Kg6+ (4.270.270) 2733

32/33 0:01 +M2 1.Ld8 Kh4 2.Kg6+ (4.799.448) 2742

33/37 0:02 +M2 1.Ld8 Kh4 2.Kg6+ (6.216.056) 2707

33/37 0:02 +M2 1.Ld8 Kh4 2.Kg6+ (6.986.968) 2727

34/37 0:03 +M2 1.Ld8 Kh4 2.Kg6+ (8.829.220) 2678

34/37 0:03 +M2 1.Ld8 Kh4 2.Kg6+ (9.920.620) 2668

35/39 0:05 +M2 1.Ld8 Kh4 2.Kg6+ (13.218.266) 2611

35/39 0:06 +M2 1.Ld8 Kh4 2.Kg6+ (15.557.866) 2579

36/41 0:07 +M2 1.Ld8 Kh4 2.Kg6+ (20.106.698) 2533

36/41 0:09 +M2 1.Ld8 Kh4 2.Kg6+ (23.468.237) 2511

37/43 0:14 +M2 1.Ld8 Kh4 2.Kg6+ (34.988.995) 2455

37/43 0:16 +M2 1.Ld8 Kh4 2.Kg6+ (40.372.028) 2444

38/45 0:24 +M2 1.Ld8 Kh4 2.Kg6+ (58.545.816) 2395

ED.