Spark is amazing!

[David Dahlem]

[d]3n4/rBp1p3/2P5/2PK4/k2N4/pp2R3/bppB2Rp/q1n1r1b1 w - - 0 1

Mate in 29 in 4 seconds!!

Spark 0.3a:

1 00:00 229 0 -29.28 Re3xe1 h2h1Q Re1xg1 Qh1xg1 Rg2xg1 Nd8xb7 c6xb7 Ra7xb7
2/1 00:00 1.613 0 -30.74 Re3xe1 b2b1Q Re1xg1 b3b2+ Kd5e4 h2xg1Q Rg2xg1 Nd8xb7 c6xb7 Ra7xb7
3/2 00:00 13.777 0 -30.74 Re3xe1 b2b1Q Re1xg1 b3b2+ Kd5e4 h2xg1Q Rg2xg1 Nd8xb7 c6xb7 Ra7xb7
4/5 00:00 47.092 376.736 -32.73 Re3xe1 b2b1Q Rg2xg1 Nc1e2 Rg1g4 b3b2+ Nd4b3+ Ka4xb3
5/7 00:00 102.034 383.586 -32.73 Re3xe1 b2b1Q Rg2xg1 Nc1e2 Rg1g4 b3b2+ Nd4b3+ Ka4xb3
6/47 00:02 715.547 420.168 0.00 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4c4+ Ka5b5 Rc4b4+
7/52 00:02 813.914 434.087 0.00 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4c4+ Ka5b5 Rc4b4+
8/55 00:02 988.738 458.598 0.00 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4c4+ Ka5b5 Rc4b4+
9/57 00:04 1.960.804 529.517 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
10/57 00:04 2.187.088 555.380 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
11/57 00:04 2.676.359 603.055 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
12/57 00:05 3.460.050 659.057 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
13/57 00:06 4.814.345 737.152 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
14/57 00:09 7.238.119 811.266 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+
15/57 00:13 11.801.801 885.489 +M29 Rg2g4 h2h1Q+ Nd4f3+ Ka4b5 Rg4b4+ Kb5a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3xa2+ Ka5b5 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4xb3+ Ka5a4 Rb3b4+ Ka4a5 Rb4e4+ Ka5b5 Nf3d4+ Kb5a4 Nd4e2+ Ka4b5 Ne2c3+ Kb5a5 Nc3a2+ Ka5b5 Bb7a6+ Ra7xa6 Na2c3+ Kb5a5 Nc3e2+ Ka5b5 Ne2d4+ Kb5a4 Nd4f3+ Ka4b5 Re4b4+ Kb5a5 Rb4b6+ Ka5a4 Rb6xa6+ Ka4b5 Ra6a5+

Mate in 29
M. Kwiatkowski
2nd Honourable Mention, The Problemist 1992

1.Rg4 Even if it threatens two short mates, with Nxb3+ and Ne6+, it is still a nice key. 1...h1Q+ 2.Nf3+ Kb5 Now the Knight and Rook each have chores, but they can only do them if they work as a fine-tuned team - one of them holding the Qh1 at bay, while the other one does its job. 3.Rb4+ Ka5 4.Rbe4+! Now the Knight is free. 4...Kb5 5.Nd4+ Ka4 6.Ne2+ Kb5 7.Nc3+ Ka5 8.Nxa2+ Why this Bishop had to go will become clear later. 8...Kb5 Now it is the Rook's turn, but the Knight must first unpin it. 9.Nc3+ Ka5 10.Ne2+ Kb5 11.Nd4+ Ka4 12.Nf3+! Kb5 13.Rb4+ Ka5 14.Rbxb3+ The reason for removing this pawn will be revealed later too, but at least we understand why the Ba2 had to go - it would have pinned the Rb3. 14...Ka4 15.Rb4+ Ka5 16.Rbe4+! and the Knight is unpinned once more. 16...Kb5 17.Nd4+ Ka4 18.Ne2+ Kb5 19.Nc3+ Ka5 20.Na2+! It is a very nice feature of this problem that the Knight goes back to the empty square a2 where it once captured a Bishop. Now, it has to shield a3 from the Qa1. 20...Kb5 21.Ba6+ Finally, the mating attack. 21...Rxa6 If 21...Kxa6, then 22.Rxa3+ (that is why Pb3 had to go and Qxa3 had to be prevented) 22...Kb5 23.Nc3 mate. 22.Nc3+ Ka5 23.Ne2+ Kb5 24.Nd4+ Ka4 25.Nf3+! One last unpin of the Rook, and it's mate: 25...Kb5 26.Rb4+ Ka5 27.Rb6+ Ka4 28.Rxa6+ Kb5 29.Ra5 mate.

[Zagalo]

Thanks for sharing
Many engines can find the mate in ~4 seconds. The shortest I found was 1 second by Cyclone xTreme (4 threads):

FEN: 3n4/rBp1p3/2P5/2PK4/k2N4/pp2R3/bppB2Rp/q1n1r1b1 w - - 0 1

Cyclone xTreme:
1/22 00:00 2.448 0 -31.05 Bxe1 h1Q Re4 b1Q Ne6+ Bd4 Rxd4+ Qxd4+ Nxd4 Qxg2+ Ke5 Nxb7 cxb7 Rxb7
1/22 00:00 3.748 0 -26.06 Rxe1 b1Q Rgxg1 hxg1Q Rxg1 b2+ Ke4 Nxb7 cxb7 Rxb7
1/23 00:00 54.439 0 -25.07 Ba6 Rxa6
2/23 00:00 64.331 0 -28.96 Ba6 Rxa6 Rxe1 b1Q
2/30 00:00 68.491 0 -28.64 Rxe1 b1Q Rgxg1 hxg1Q Rxg1 Nd3 Rg4 b2+ Nb3+ Kxb3
2/30 00:00 69.111 0 -28.00 Rxh2 Bxe3 Bc3 b1Q Bxa1 Qxa1
2/31 00:00 124.949 0 -6.66 Rg4 Rxb7 cxb7 Nd3 Ne6+ Nb4+ Rxb4+ Ka5 Rh4+ Ka6 b8Q
3/31 00:00 128.558 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
4/50 00:00 131.151 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
5/58 00:00 137.555 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
6/58 00:00 142.924 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
7/62 00:00 173.557 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
8/62 00:00 201.897 0 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Rb4+
9/66 00:01 1.097.263 0 +M29 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Nxa2+ Kb5 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rbxb3+ Ka4 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Na2+ Kb5 Ba6+ Rxa6 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rb6+ Ka4 Rxa6+ Kb5 Ra5+
10/66 00:04 3.099.038 0 +M29 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Nxa2+ Kb5 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rbxb3+ Ka4 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Na2+ Kb5 Ba6+ Rxa6 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rb6+ Ka4 Rxa6+ Kb5 Ra5+
11/66 00:11 8.421.606 3.061.818 +M29 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Nxa2+ Kb5 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rbxb3+ Ka4 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Na2+ Kb5 Ba6+ Rxa6 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rb6+ Ka4 Rxa6+ Kb5 Ra5+
12/66 00:35 27.644.351 3.152.000 +M29 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Nxa2+ Kb5 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rbxb3+ Ka4 Rb4+ Ka5 Rbe4+ Kb5 Nd4+ Ka4 Ne2+ Kb5 Nc3+ Ka5 Na2+ Kb5 Ba6+ Rxa6 Nc3+ Ka5 Ne2+ Kb5 Nd4+ Ka4 Nf3+ Kb5 Rb4+ Ka5 Rb6+ Ka4 Rxa6+ Kb5 Ra5+


Rybka 3:
2 00:00 3.634 232.576 -26.32 Rxe1
2 00:00 13.393 217.689 0.00 Rg4
3 00:00 13.804 224.369 0.00 Rg4
4 00:00 13.867 225.393 0.00 Rg4
5 00:00 13.895 225.848 0.00 Rg4 h1Q+
6 00:00 14.062 228.563 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+
7 00:00 14.748 239.713 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
8 00:00 14.814 192.019 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
9 00:00 19.439 251.968 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
10 00:00 29.325 319.455 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
11 00:00 47.222 383.772 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
12 00:00 96.610 526.216 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
13 00:00 129.007 468.450 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
14 00:00 267.488 584.024 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
15 00:00 417.722 506.809 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
16 00:02 1.139.261 606.973 0.00 Rg4 h1Q+ Nf3+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+ Kb5 Rb4+ Ka5 Rc4+
17+ 00:03 1.953.039 609.357 +5.11 Rg4
17 00:03 2.056.030 612.383 +M29 Rg4

[bundymax]

How about hardware or even better a Fitz Benchmark # so we can compare apples to apples when we post tests and tournament results. Just a thought.

[mhalstern]

I deleted the text as this was a mispost.

Mods - pls delete.

[PawnStormZ]

   Yes, the hardware has to be taken into account when giving the times for engine solutions.   Even the option settings on the engine can have an influence.  On my I7, Spark finds the mate in an amazing 1 second at depth 9!!
   
       Curiously, Stockfish, which usually does well on these for me, does not find it even after 2 minutes through depth 18; maybe my option "tweaks" are no good here.  Komodo also does not find it, through depth 24.
   
       Maybe it is the depth at which the engines find the move that should be compared, rather than the time.  It seems that Spark finds it at 9, and Rybka at 17 on both mine and Zagalo's pc.  So time to depth may be the important thing for comparison purposes.
       
       Spark
[Mate in 29] d=9 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rbe4+ Kb5 5.Nd4+ Ka4 6.Ne2+ Kb5 7.Nc3+ Ka5 8.Nxa2+ Kb5 9.Nc3+ Ka5 10.Ne2+ Kb5 11.Nd4+ Ka4 12.Nf3+ Kb5 13.Rb4+ Ka5 14.Rbxb3+ Ka4 15.Rb4+ Ka5 16.Rbe4+ Kb5 17.Nd4+ Ka4 18.Ne2+ Kb5 19.Nc3+ Ka5 20.Na2+ Kb5 21.Ba6+ Rxa6 22.Nc3+ Ka5 23.Ne2+ Kb5 24.Nd4+ Ka4 25.Nf3+ Kb5 26.Rb4+ Ka5 27.Rb6+ Ka4 28.Rxa6+ Kb5 29.Ra5# (0:00.01) 1777kN
[+11.51] d=9 1.Rg4 (0:00.01) 1490kN
[+5.50] d=9 1.Rg4 (0:00.01) 1432kN
[+3.50] d=9 1.Rg4 (0:00.01) 1372kN
[+1.50] d=9 1.Rg4 (0:00.01) 1318kN
[+0.75] d=9 1.Rg4 (0:00.01) 1292kN
[+0.25] d=9 1.Rg4 (0:00.01) 1272kN
[+0.00] d=8 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ (0:00.01) 936kN
[+0.00] d=7 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ (0:00.00) 767kN
[+0.00] d=6 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ (0:00.00) 672kN
       

      Rybka 3
[Mate in 29] d=17 1.Rg4 (0:00.03) 2169kN
[+5.11] d=17 1.Rg4 (0:00.02) 2097kN
[+0.00] d=16 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.01) 1336kN
[+0.00] d=15 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.01) 673kN
[+0.00] d=14 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 308kN
[+0.00] d=13 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 154kN
[+0.00] d=12 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 88kN
[+0.00] d=11 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 40kN
[+0.00] d=10 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 26kN
[+0.00] d=9 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 20kN
[+0.00] d=8 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 20kN
[+0.00] d=7 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 20kN
[+0.00] d=6 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 20kN
[+0.00] d=5 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 19kN
[+0.00] d=4 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 19kN
[+0.00] d=3 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 19kN
[+0.00] d=2 1.Rg4 h1Q+ 2.Nf3+ Kb5 3.Rb4+ Ka5 4.Rc4+ Kb5 5.Rb4+ Ka5 6.Rc4+ Kb5 7.Rb4+ Ka5 8.Rc4+ Kb5 9.Rb4+ Ka5 10.Rc4+ Kb5 11.Rb4+ Ka5 12.Rc4+ Kb5 13.Rb4+ Ka5 14.Rc4+ Kb5 15.Rb4+ Ka5 16.Rc4+ (0:00.00) 19kN
[-26.43] d=2 1.Rxe1 (0:00.00) 3kN