mating against part of the set

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peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Uri Blass wrote: Tue Jan 14, 2025 4:11 pm I do not have a proof that a3 does not lead to the fastest mate but this move does not activate a piece so I will be surprised if there is no faster mate.
I doubt the 15 moves after 1.e4 (or d4 or Nc3) anyhow too, yet I don't have a shorter winning line without blunder from Black's side so far.
Maybe I'll let Gustav ponder about a position after some plausible first moves overnight, regards
Peter.
Ignacio
Posts: 178
Joined: Wed Mar 08, 2006 8:15 pm

Re: mating against part of the set

Post by Ignacio »

I have get mate in 14 with 1.e4.

Ignacio
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Ignacio wrote: Tue Jan 14, 2025 5:02 pm I have get mate in 14 with 1.e4.
Would you mind showing it?
:)
The best I can approve so far is after
2bqk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1
1. e4 Kf8 2. d4 Qf6 3. Nc3 Be6

[d]5k2/8/4bq2/8/3PP3/2N5/PPP2PPP/R1BQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

4.Nf3 Bf7 5.Ne5 Kg7 6.Qg4+ Kh7 7.Nd5 Bxd5 8.exd5 Kh8 9.Qh5+ Kg8 10.d6 Kf8 11.Bc4 Kg7 12.Qg4+ Qg5 13.Qxg5+ Kf8 14.Qe7#
Depth: 61/22 00:00:09 339MN
+- (#11)

But there are still 3 moves taken from an output- line that was one move longer then from there onwards, so still 3 moves to be proved.
Edit: already at next one ply backwards Huntsman is stuck with one move longer DTM after 3...Kg7 (instead of ...Be6):

[d]2b5/6k1/5q2/8/3PP3/2N5/PPP2PPP/R1BQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

4.Qh5 Qg6 5.Qe5+ Qf6 6.Qc7+ Bd7 7.Qxd7+ Qf7 8.Qc8 Qg8 9.Qc6 Kh8 10.Bc4 Qg6 11.Qc8+ Kh7 12.Bf4 Qxg2 13.Qd7+ Qg7 14.Qh3+ Kg6 15.Qf5#
Depth: 71/24 00:01:12 3227MN
+- (#12)
:(
Last edited by peter on Tue Jan 14, 2025 5:55 pm, edited 4 times in total.
Peter.
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Uri Blass wrote: Tue Jan 14, 2025 1:51 pm my favourite slowchess see mate score also against queen and 2 bishops
[d]2bqkb2/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1

Slow64-avx2 [001]:
...
44/68 4:32:44 15,060,986k 920k +M27 e2-e3 Qd8-d6 Qd1-h5+ Ke8-d8 Qh5-a5+ Kd8-d7 Qa5-a7+ Kd7-e8 Qa7-a8 Qd6-e6 Nb1-c3 Ke8-f7 Ng1-f3 Kf7-g7 Qa8-d5 Qe6xd5 Nc3xd5 Bc8-e6 Nd5-c3 Bf8-b4 a2-a4 Bb4-a5 h2-h4 Kg7-h6 h4-h5 Be6-f7 Bf1-d3 Bf7-g8 Nc3-e4 Bg8-h7 Ne4-d6 Ba5-c7 Nd6-f5+ Bh7xf5 Bd3xf5 Bc7-d8 a4-a5 Bd8-e7 a5-a6 Be7-c5 a6-a7 Bc5xa7 Ra1-a6+ Kh6-g7 Ra6xa7+ Kg7-f6 Rh1-h4 Kf6xf5 Ra7-e7 Kf5-f6 Rh4-e4 Kf6-f5 Re4-f4+
Here you don't doubt 1.e3, do you?
:)
After these first two moves (backwarding them too takes me too much hardware- time again)
2bqkb2/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1
1.e4 Qg5 2.Qf3 Bd6
I get this one output:
[d]2b1k3/8/3b4/6q1/4P3/5Q2/PPPP1PPP/RNB1KBNR w KQ - 0 1
Analysis by The Huntsman 1:
3.Lc4 Kd8 4.Sc3 De5 5.d3 Lb4 6.Df7 Ld7 7.Lf4 Le8 8.Db7 Dxf4 9.Dxb4 Lc6 10.Sd5 Lxd5 11.Lxd5 Ke8 12.Db6 Dd6 13.Lf7+ Ke7 14.Dxd6+ Kxd6 15.a4 Kc7 16.a5 Kb8 17.Ld5 Ka7 18.a6 Kb6 19.a7 Kc5 20.a8D Kd6 21.Dd8+ Ke5 22.Sf3+ Kf4 23.Dh4#
Tiefe: 44/42 00:00:27 1096MN
+- (#21)

So this one shouldn't be a much longer DTM but 23 all in all, regards
Peter.
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

peter wrote: Tue Jan 14, 2025 5:30 pm But there are still 3 moves taken from an output- line that was one move longer then from there onwards, so still 3 moves to be proved.
Edit:
Edit- time over, got already two more moves backwards with #14, the line with 15 above was suboptimal for 3.Nc3, Qh5 there get's the 14 again)).

Now after 1.e4 Kf8 (still to be doubted but probably not a blunder):

[d]2bq1k2/8/8/8/4P3/8/PPPP1PPP/RNBQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

2.d4 Be6 3.Bh6+ Kg8 4.Qh5 Qf6 5.e5 Qf5 6.Qe8+ Kh7 7.Bd3 Kxh6 8.Qh8+ Kg6 9.Bxf5+ Bxf5 10.Qf6+ Kh7 11.Nf3 Bxc2 12.Ng5+ Kg8 13.Qf7+ Kh8 14.Qf8#
Depth: 59/26 00:00:26 978MN
+- (#13)

1...Qg5 has to be answered by 2.d4 Qg4 3.Qd3 (of course not Qxg4)

[d]2b1k3/8/8/6q1/4P3/8/PPPP1PPP/RNBQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

2.d4 Qg4 3.Qd3 Bd7 4.Nc3 Kf7 5.Nf3 Kg7 6.Ne5 Qh5 7.Nxd7 Qg6 8.Ne5 Qf6 9.Qg3+ Kf8 10.Nd7+ Kf7 11.Nxf6 Kxf6 12.Qc7 Ke6 13.Bc4+ Kf6 14.Qf7#
Depth: 66/26 00:01:43 4285MN
+- (#13)

Last one hurdle so far for Huntsman is 1.e4 Qh4, after 2.Qf3 Qg4 there's still #15 in output till now:

[d]2b1k3/8/8/8/4P1q1/5Q2/PPPP1PPP/RNB1KBNR w KQ - 0 1

Analysis by The Huntsman 1:

3.d4 Qxf3 4.Nxf3 Kf7 5.Nc3 Kf6 6.Bg5+ Kg6 7.Nd5 Be6 8.Nf4+ Kf7 9.Nxe6 Kg8 10.Ne5 Kh8 11.Bf6+ Kh7 12.Ng5+ Kh6 13.Bc4 Kh5 14.Bf7+ Kh6 15.Ng4#
Depth: 69/26 00:00:14 667MN
+- (#13)

or

3.Bb5+ Ke7 4.Qa3+ Kf7 5.d3 Qh4 6.Nf3 Qe7 7.Ng5+ Kf6 8.Qc3+ Kg6 9.Qxc8 Kg7 10.Qf5 Kg8 11.Bc4+ Kh8 12.Qh3+ Kg7 13.Qh7+ Kf6 14.Qh6+ Ke5 15.Nf3#
Depth: 72/26 00:00:05 189MN
+- (#13)

Maybe after 1.e4 Qh4 something else but 2.Qf3 is necessary, regards
Peter.
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Maybe after 1.e4 Qh4 something else but 2.Qf3 is necessary
Got it, after 1.e4 Qh4 :

[d]2b1k3/8/8/8/4P2q/8/PPPP1PPP/RNBQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

2.Nc3 Qg4 3.Nf3 Ke7 4.d4 Be6 5.Qd3 Kf8 6.Qa6 Qg6 7.Bc4 Kg7 8.Bxe6 Qe8 9.Qb7+ Kh8 10.Ng5 Qd7 11.Qb8+ Kg7 12.Bxd7 Kf6 13.Qf8+ Kg6 14.Be8#
Depth: 59/26 00:00:23 886MN
+- (#13)

One more move backwards to starting position:

[d]2bqk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1

Analysis by The Huntsman 1:

1.e4 Kd7 2.d4 Qh4 3.Qf3 Ke8 4.Nc3 Be6 5.Bb5+ Bd7 6.Bxd7+ Kxd7 7.Qf5+ Ke8 8.Nd5 Kd8 9.Bg5+ Qxg5 10.Qxg5+ Kd7 11.Qg7+ Kc6 12.Qc7+ Kb5 13.a4+ Ka6 14.Nb4#
Depth: 64/28 00:01:18 3021MN
+- (#14)

Now there's still to be questioned, if 1.d4 or 1.Nc3 doesn't work as well. Will stop that here now,
Peter.
Uri Blass
Posts: 10893
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: mating against part of the set

Post by Uri Blass »

stockfish10 with 6 cores also found mate in 13 after 1.e4 Qh4 when I won a game OTB at the same time.

My guess is that 1.e4 with mate in 14 is the best move before 1.e4 Qh4.

FEN: 2b1k3/8/8/8/4P2q/8/PPPP1PPP/RNBQKBNR w KQ - 1 2

Stockfish_10_x64_popcnt:
1/2 00:00 268 134k +43.71 Qd1-e2
2/2 00:00 538 269k +43.71 Qd1-e2 Ke8-d8
3/3 00:00 705 353k +43.71 Qd1-e2 Bc8-g4 Qe2-a6
4/4 00:00 924 462k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7
5/6 00:00 1k 629k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7 Qa6-g6+ Ke8-d8
6/7 00:00 2k 804k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7 Qa6-g6+ Ke8-f8 d2-d4
7/8 00:00 2k 1,117k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7 Qa6-g6+ Ke8-d8 d2-d4 Bd7-e8
8/10 00:00 3k 1,369k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7 Qa6-g6+ Ke8-d8 d2-d4 Bd7-e8 Bc1-g5+ Qh4xg5
9/9 00:00 4k 2,235k +43.71 Qd1-e2 Bc8-g4 Qe2-a6 Bg4-d7 Qa6-g6+ Ke8-d8 d2-d4 Bd7-e8 Bc1-g5+ Qh4xg5
10/12 00:00 11k 5,654k +35.32 Qd1-e2 Bc8-g4 Qe2-a6 Ke8-e7 Nb1-c3 Ke7-f8 Bf1-c4 Bg4-d7 Qa6-d6+ Qh4-e7 Qd6xe7+ Kf8xe7 Ng1-f3
11/10 00:00 17k 5,522k +35.44 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 d2-d4 Qg4xe2+ Bf1xe2 Ke8-e7 Ng1-f3 Ke7-f8
12/14 00:00 36k 9,004k +35.62 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 d2-d4 Qg4xe2+ Bf1xe2 Bd7-c6 Ng1-f3
13/17 00:00 76k 10,863k +35.82 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 d2-d4 Qg4xe2+ Bf1xe2 Bd7-c8 Ng1-f3 Ke8-f7 Nc3-d5 Kf7-g7 Bc1-f4
14/19 00:00 80k 11,439k +38.63 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 Qe2-c4 Qg4-e6 Qc4-c5+ Kf8-e8 Qc5-h5+ Ke8-e7 Nf3-e5 Bd7-e8 Qh5-h4+ Ke7-f8
15/19 00:00 86k 10,812k +42.37 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Ng1-f3 Qg4-e6 d2-d4 Qe6-d6 Nc3-d5 Ke8-f8 Nf3-e5
16/28 00:00 655k 11,491k +43.39 Qd1-e2 Bc8-d7 Nb1-c3 Bd7-e6 Qe2-b5+ Ke8-f8 d2-d4 Qh4-h7 Qb5-b8+ Kf8-g7 Qb8-e5+ Kg7-f7 Qe5-d6 Qh7-g6 Qd6-c7+ Kf7-g8 Ng1-f3 Qg6-g7 Qc7-b8+ Qg7-f8 Qb8-e5 Be6-f7
17/28 00:00 1,389k 12,082k +43.44 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Qe2-c4 Bd7-e6 Qc4-b5+ Ke8-f8 Ng1-f3 Qg4-g6 d2-d4 Qg6-f6 Qb5-b8+ Kf8-g7 Qb8-d6 Be6-g4 Qd6-c7+ Kg7-h8 Nf3-e5 Bg4-e6 Qc7-c6 Kh8-g7 Bf1-c4
18/29 00:00 4,190k 13,739k +45.55 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-e7 Nf3-e5 Qe7-h7 Nb1-c3 Ke8-e7 Qe2-b5 Ke7-f6 Qb5-b8 Qh7-g8 Qb8-d6 Qg8-e8 Nc3-d5+ Kf6-g7 Qd6-c7+ Kg7-f8 Qc7-h7
19/29 00:00 6,712k 13,811k +47.02 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-e7 d2-d4 Qe7-f7 Ng1-f3 Ke8-d8 Qe2-a6 Qf7-e6 Qa6-a5+ Kd8-e7 Qa5-c5+ Ke7-e8 Qc5-h5+ Ke8-e7 Qh5-h4+ Ke7-d6 Bc1-f4+ Kd6-c6 d4-d5+ Qe6xd5 Nc3xd5 Kc6-b7
20/32 00:01 18,805k 13,848k +74.84 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-h5 Qe2-a6 Qh5-g4 Qa6-b5+ Be6-d7 Qb5-b8+ Bd7-c8 Bf1-b5+ Ke8-e7 Qb8-c7+ Ke7-f8 Qc7-d6+ Kf8-g8 Bb5-c4+ Kg8-h7 Qd6-e7+ Qg4-g7 Qe7-h4+ Qg7-h6 Qh4-d8 Kh7-g6 Nf3-e5+ Kg6-g7
21/38 00:02 28,797k 13,667k +77.02 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Qe2-c4 Bd7-e6 Qc4-b5+ Ke8-f8 Ng1-f3 Be6-g8 Qb5-c5+ Kf8-g7 Qc5-e7+ Kg7-h8 Qe7-f6+ Qg4-g7 Qf6xg7+ Kh8xg7 Nf3-g5 Kg7-f6 Nc3-d5+ Kf6xg5 d2-d4+ Kg5-g6 Nd5-e7+ Kg6-g7 Ne7xg8 Kg7xg8 Ke1-e2 Kg8-f8 Ke2-d3
22/46 00:03 47,260k 13,974k +80.50 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-f4 Nb1-c3 Qf4-d6 Qe2-b5+ Ke8-f8 Qb5-h5 Be6-g8 d2-d4 Kf8-g7 Qh5-g5+ Kg7-f8 Qg5-h6+ Qd6xh6 Bc1xh6+ Kf8-e8 Nc3-d5 Ke8-f7 Bf1-c4 Kf7-g6 Nd5-e7+ Kg6xh6 Ne7xg8+ Kh6-g7 Ke1-e2 Kg7-f8 Nf3-e5 Kf8-e8 Ke2-d3
23/36+ 00:03 54,768k 14,022k +80.60 Qd1-e2
23/36 00:04 59,730k 14,024k +80.60 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Qh5-c5+ Ke7-f7 Bc4xe6+ Qf6xe6 Qc5-f5+ Qe6xf5 e4xf5 Kf7-f6 g2-g4 Kf6-g7 Nb1-c3 Kg7-f6 d2-d4 Kf6-e7 Ke1-e2 Ke7-d7 Ke2-d3 Kd7-d8 Kd3-c4
24/31+ 00:04 64,034k 14,070k +80.70 Qd1-e2
24/38+ 00:05 73,865k 14,126k +80.79 Qd1-e2
24/38 00:06 86,331k 14,248k +80.83 Qd1-e2 Bc8-d7 Nb1-c3 Bd7-e6 Ng1-f3 Qh4-e7 Qe2-b5+ Ke8-f8 Qb5-e5 Be6-g8 Qe5xe7+ Kf8xe7 Nc3-d5+ Ke7-f7 Nf3-g5+ Kf7-g7 d2-d4 Kg7-f8 Nd5-f6 Bg8-f7 Ng5xf7 Kf8-g7 Nf7-g5 Kg7xf6 Ke1-e2 Kf6-e7 Ke2-d3 Ke7-d7 Kd3-c4 Kd7-c6 a2-a3 Kc6-d6
25/36+ 00:06 94,416k 14,295k +80.93 Qd1-e2
25/36 00:07 103,528k 14,296k +80.93 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-h6 Qe2-a6 Qh6-g6 Nf3-g5 Ke8-e7 Qa6xe6+ Qg6xe6 Ng5xe6 Ke7xe6 Bf1-b5 Ke6-e5 Nb1-c3 Ke5-d4 Ke1-e2 Kd4-e5 Bb5-c6 Ke5-e6 Bc6-d5+ Ke6-f6 Ke2-e3 Kf6-g6 Ke3-d4 Kg6-h5 Bd5-f7+ Kh5-g5 Kd4-e5 Kg5-h4
26/32+ 00:07 110,824k 14,311k +81.02 Qd1-e2
26/42+ 00:07 111,104k 14,305k +81.12 Qd1-e2
26/42- 00:07 111,443k 14,300k +80.79 Qd1-e2 Bc8-d7
26/42+ 00:08 114,731k 14,281k +81.05 Qd1-e2
26/42+ 00:09 140,822k 14,384k +83.60 Qd1-e2
26/42 00:11 160,357k 14,505k +84.35 Qd1-e2 Qh4-g4 Qe2-b5+ Bc8-d7 Qb5-b8+ Ke8-f7 Bf1-c4+ Bd7-e6 Qb8-c7+ Kf7-f6 e4-e5+ Kf6-g6 Bc4-d3+ Be6-f5 Qc7-c6+ Kg6-f7 Qc6-f6+ Kf7-e8 Qf6xf5 Qg4-b4 Qf5-c8+ Ke8-e7 Qc8-c7+ Ke7-f8 Qc7-d6+ Qb4xd6 e5xd6 Kf8-f7 Bd3-f5 Kf7-f6 d6-d7
27/42+ 00:12 181,285k 14,467k +84.45 Qd1-e2
27/42+ 00:12 182,687k 14,463k +84.54 Qd1-e2
27/42+ 00:12 184,825k 14,446k +86.01 Qd1-e2
27/42- 00:12 185,570k 14,443k +84.23 Qd1-e2 Qh4-g4
27/42+ 00:13 196,360k 14,403k +85.44 Qd1-e2
27/42+ 00:13 200,631k 14,366k +86.47 Qd1-e2
27/42- 00:15 215,667k 14,321k +83.40 Qd1-e2 Qh4-g5
27/44+ 00:15 219,213k 14,310k +85.60 Qd1-e2
27/44+ 00:18 256,090k 13,609k +90.30 Qd1-e2
27/44 00:24 320,319k 13,165k +91.65 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-h7 Qe2-b5+ Qh7-d7 Qb5-e5 Ke8-f8 Qe5-h8+ Be6-g8 Bf1-c4 Qd7-h7 Qh8xg8+ Qh7xg8 Bc4xg8 Kf8xg8 d2-d4 Kg8-g7 Nb1-c3 Kg7-f7 Nf3-e5+ Kf7-g7 d4-d5 Kg7-f6 Bc1-f4 Kf6-g7 O-O-O Kg7-h8 d5-d6 Kh8-h7 Bf4-g5 Kh7-h8 d6-d7 Kh8-g7
28/38+ 00:25 328,708k 13,127k +91.75 Qd1-e2
28/38+ 00:25 330,194k 13,126k +91.85 Qd1-e2
28/44+ 00:28 364,348k 12,875k +93.94 Qd1-e2
28/44- 00:28 365,390k 12,871k +90.99 Qd1-e2 Qh4-g4
28/44+ 00:28 371,611k 12,834k +93.15 Qd1-e2
28/44+ 00:29 373,698k 12,822k +94.45 Qd1-e2
28/44- 00:30 389,736k 12,740k +88.48 Qd1-e2 Qh4-g5
28/44+ 00:31 402,940k 12,697k +93.03 Qd1-e2
28/44+ 00:36 462,159k 12,609k +153.18 Qd1-e2
28/44 00:38 479,868k 12,586k +M48 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-d8 Qe2-a6 Qd8-c8 Qa6-d6 Qc8-d7 Qd6-e5 Qd7-e7 Nb1-c3 Be6-d7 Qe5-b8+ Qe7-d8 Qb8-g3 Bd7-e6 Qg3-g7 Qd8-b6 Qg7-h8+ Ke8-d7 Nf3-e5+ Kd7-c7 Nc3-b5+ Kc7-b7 Qh8-g7+ Be6-d7 Qg7xd7+ Kb7-b8 Qd7-e8+ Kb8-b7 Qe8-f7+ Kb7-a8 Qf7-d5+ Qb6-b7 Qd5xb7+ Ka8xb7 Nb5-c3 Kb7-c8 Bf1-a6+ Kc8-b8
29/40+ 00:43 547,011k 12,671k +M38 Qd1-e2
29/40+ 00:44 566,438k 12,718k +M28 Qd1-e2
29/46- 00:48 620,504k 12,780k +M58 Qd1-e2 Bc8-e6
29/46+ 00:49 634,691k 12,775k +M35 Qd1-e2
29/46 00:50 646,126k 12,769k +M21 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-e7 Nf3-e5 Qe7-d6 Qe2-h5+ Ke8-d8 Nb1-c3 Kd8-c8 Qh5-e8+ Kc8-b7 Ne5-f7 Qd6-d7 Qe8xe6 Qd7xe6 Nf7-d8+ Kb7-c7 Nd8xe6+ Kc7-d7 Ne6-g5 Kd7-c6 Ng5-f3 Kc6-d7 Nc3-d5 Kd7-e8 Nf3-g5 Ke8-d8 e4-e5 Kd8-c8 e5-e6 Kc8-b7 Bf1-b5 Kb7-a8 Bb5-c6+ Ka8-a7 e6-e7
30/42 00:55 703,549k 12,762k +M21 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-e7 Nf3-e5 Qe7-d6 Qe2-h5+ Ke8-d8 Nb1-c3 Kd8-c8 Qh5-e8+ Kc8-b7 Ne5-f7 Qd6-d7 Qe8xe6 Qd7xe6 Nf7-d8+ Kb7-c7 Nd8xe6+ Kc7-d7 Ne6-g5 Kd7-c6 Ng5-f3 Kc6-d7 Nc3-d5 Kd7-e8 Nf3-g5 Ke8-d8 e4-e5 Kd8-c8 e5-e6 Kc8-b7 Bf1-b5 Kb7-a8 Bb5-c6+ Ka8-a7 e6-e7 Ka7-a6 e7-e8Q Ka6-a7 Qe8-a8+
31/50 00:59 756,837k 12,785k +M19 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-f6 Qe2-a6 Ke8-f7 Bf1-c4 Be6xc4 Qa6xc4+ Kf7-f8 Qc4-c8+ Kf8-g7 Qc8-g4+ Kg7-h7 Nb1-c3 Qf6-g6 Qg4xg6+ Kh7xg6 Nf3-e5+ Kg6-g7 d2-d4 Kg7-f6 Bc1-h6 Kf6-e7 Bh6-g5+ Ke7-f8 O-O-O Kf8-g8 d4-d5 Kg8-g7 d5-d6 Kg7-h7 d6-d7 Kh7-g7 d7-d8Q Kg7-h7 Rd1-d7+
32/38 01:00 778,632k 12,813k +M19 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-f6 Qe2-a6 Ke8-f7 Bf1-c4 Be6xc4 Qa6xc4+ Kf7-g7 Qc4-c3 Kg7-f7 Qc3xf6+ Kf7xf6 Nb1-c3 Kf6-e6 d2-d4 Ke6-d7 d4-d5 Kd7-e8 Bc1-f4 Ke8-d8 O-O-O Kd8-e7 Nf3-g1 Ke7-d7 d5-d6 Kd7-e8 d6-d7+ Ke8-d8 Rd1-d5 Kd8-e7 d7-d8Q+ Ke7-f7 Rd5-d7+ Kf7-g6 Qd8-g5+
33/40 01:09 897,424k 12,979k +M18 Qd1-e2 Bc8-e6 Ng1-f3 Qh4-e7 Nf3-e5 Qe7-f6 d2-d4 Ke8-f8 Qe2-a6 Kf8-g7 Bf1-c4 Be6xc4 Qa6xf6+ Kg7xf6 Ne5xc4 Kf6-e7 Nb1-c3 Ke7-d7 d4-d5 Kd7-c7 d5-d6+ Kc7-b7 Nc4-e5 Kb7-a6 d6-d7 Ka6-a7 d7-d8Q Ka7-b7 Qd8-d7+ Kb7-a6 Qd7-c6+ Ka6-a7 Nc3-b5+ Ka7-b8 Ne5-d7+
34/36 01:16 998,842k 13,079k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
35/36 01:17 1,014,600k 13,087k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
36/36 01:19 1,047,446k 13,113k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
37/36 01:27 1,156,298k 13,186k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
38/36 01:28 1,165,062k 13,195k +M18 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Qe2-c4 Qg4-e6 Qc4-c7 Bd7-c6 Qc7xc6+ Qe6xc6 Bf1-b5 Qc6xb5 Nc3xb5 Ke8-d7 d2-d4 Kd7-d8 d4-d5 Kd8-c8 Bc1-f4 Kc8-b7 Nb5-c3 Kb7-c8 O-O-O Kc8-b7 d5-d6 Kb7-c8 d6-d7+ Kc8-d8 Bf4-g5+ Kd8-c7 d7-d8Q+ Kc7-c6 Qd8-b8 Kc6-c5 Qb8-b5+
39/36 01:30 1,188,458k 13,144k +M18 Qd1-e2 Bc8-d7 Nb1-c3 Qh4-g4 Qe2-c4 Qg4-e6 Qc4-c7 Bd7-c6 Qc7xc6+ Qe6xc6 Bf1-b5 Qc6xb5 Nc3xb5 Ke8-d7 d2-d4 Kd7-d8 d4-d5 Kd8-c8 Bc1-f4 Kc8-b7 Nb5-c3 Kb7-c8 O-O-O Kc8-b7 d5-d6 Kb7-c8 d6-d7+ Kc8-d8 Bf4-g5+ Kd8-c7 d7-d8Q+ Kc7-c6 Qd8-b8 Kc6-c5 Qb8-b5+
40/40 01:45 1,390,254k 13,234k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
41/36 01:48 1,433,345k 13,254k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
42/36 01:51 1,473,051k 13,214k +M18 Qd1-e2 Ke8-f7 Qe2-f3+ Qh4-f6 Bf1-c4+ Kf7-e7 Qf3-h5 Bc8-e6 Bc4xe6 Qf6xe6 Nb1-c3 Ke7-d7 Qh5-h3 Qe6xh3 Ng1xh3 Kd7-c7 d2-d4 Kc7-d8 Bc1-f4 Kd8-d7 d4-d5 Kd7-c8 O-O-O Kc8-d8 d5-d6 Kd8-d7 Nh3-g5 Kd7-c8 d6-d7+ Kc8-b7 d7-d8Q Kb7-a6 Qd8-b8 Ka6-a5 Qb8-b5+
43/40 02:05 1,684,220k 13,376k +M17 Qd1-e2 Ke8-f7 Nb1-c3 Bc8-d7 Qe2-a6 Qh4-f4 Bf1-c4+ Kf7-g7 Qa6-a7 Qf4-d6 Bc4-b5 Qd6-f8 Qa7xd7+ Qf8-f7 Qd7xf7+ Kg7xf7 d2-d4 Kf7-g7 Bc1-f4 Kg7-f7 d4-d5 Kf7-g8 d5-d6 Kg8-f7 O-O-O Kf7-f6 d6-d7 Kf6-e7 d7-d8Q+ Ke7-f7 Rd1-d7+ Kf7-g6 Qd8-g5+
44/32 02:39 2,175,366k 13,605k +M16 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Qc4-d4+ Kg7-f8 Qd4-e5 Qg8-g7 Qe5-d6+ Kf8-g8 Ng1-f3 Kg8-h8 Nf3-e5 Qg7xe5 Qd6xe5+ Kh8-h7 Qe5-g5 Kh7-h8 Qg5-e7 Kh8-g8 Nd5-f6+ Kg8-h8 Qe7-h7+
45/32 02:50 2,329,498k 13,678k +M16 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Qc4-d4+ Kg7-f8 Qd4-e5 Qg8-g7 Qe5-d6+ Kf8-g8 Ng1-f3 Kg8-h8 Nf3-e5 Qg7xe5 Qd6xe5+ Kh8-h7 Qe5-g5 Kh7-h8 Qg5-e7 Kh8-g8 Nd5-f6+ Kg8-h8 Qe7-h7+
46/32 02:54 2,386,625k 13,708k +M16 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Qc4-d4+ Kg7-f8 Qd4-e5 Qg8-g7 Qe5-d6+ Kf8-g8 Ng1-f3 Kg8-h8 Nf3-e5 Qg7xe5 Qd6xe5+ Kh8-h7 Qe5-g5 Kh7-h8 Qg5-e7 Kh8-g8 Nd5-f6+ Kg8-h8 Qe7-h7+
47/32 02:59 2,470,431k 13,736k +M16 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Qc4-d4+ Kg7-f8 Qd4-e5 Qg8-g7 Qe5-d6+ Kf8-g8 Ng1-f3 Kg8-h8 Nf3-e5 Qg7xe5 Qd6xe5+ Kh8-h7 Qe5-g5 Kh7-h8 Qg5-e7 Kh8-g8 Nd5-f6+ Kg8-h8 Qe7-h7+
48/32 04:51 3,978,158k 13,656k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
49/30 05:05 4,118,159k 13,499k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
50/30 05:27 4,360,904k 13,296k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
51/30 05:32 4,408,413k 13,262k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
52/30 05:49 4,651,360k 13,317k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
53/30 06:11 4,964,868k 13,369k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
54/30 06:33 5,298,830k 13,462k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
55/30 06:55 5,595,497k 13,463k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
56/30 07:37 6,117,667k 13,377k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
57/30 08:23 6,671,212k 13,241k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
58/30 08:45 6,897,213k 13,135k +M15 Qd1-e2 Ke8-f7 Nb1-c3 Kf7-g7 Qe2-b5 Bc8-e6 Bf1-c4 Be6xc4 Qb5xc4 Qh4-d8 Nc3-d5 Qd8-g8 Ng1-f3 Kg7-h8 d2-d4 Qg8-d8 Nf3-g5 Qd8-a5+ Bc1-d2 Qa5-d8 Ng5-f7+ Kh8-g7 Nf7xd8 Kg7-g8 Nd5-f6+ Kg8-g7 Qc4-f7+ Kg7-h8 Qf7-h7+
59/30 11:53 9,192,091k 12,875k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
60/28 13:03 10,119,829k 12,921k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
61/28 13:20 10,364,219k 12,952k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
62/28 13:31 10,534,441k 12,978k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
63/28 13:59 10,949,992k 13,037k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
64/28 14:34 11,398,884k 13,031k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
65/28 15:58 12,602,695k 13,142k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g7 Qd1-e2 Bc8-d7 Qe2-a6 Qg4-e6 Qa6-a7 Kg7-f6 Qa7-c7 Kf6-g7 Nf3-e5 Kg7-h7 Ne5xd7 Kh7-h8 Bf1-c4 Qe6-e8 Qc7-f4 Qe8-e7 Qf4-h6+ Qe7-h7 Qh6-f8+ Qh7-g8 Qf8xg8+
66/34 17:37 13,880,251k 13,126k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g8 Qd1-e2 Kg8-g7 Qe2-b5 Qg4-g6 Qb5-e5+ Qg6-f6 Qe5-c7+ Bc8-d7 Bf1-c4 Qf6-c6 Qc7-e5+ Qc6-f6 Bc1-h6+ Kg7-g6 Nf3-h4+ Kg6xh6 Qe5xf6+ Kh6-h7 Qf6-g6+ Kh7-h8 Qg6-h6+
67/28 18:45 14,909,419k 13,249k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Kf8-g8 Qd1-e2 Kg8-g7 Qe2-b5 Qg4-g6 Qb5-e5+ Qg6-f6 Qe5-c7+ Bc8-d7 Bf1-c4 Qf6-c6 Qc7-e5+ Qc6-f6 Bc1-h6+ Kg7-g6 Nf3-h4+ Kg6xh6 Qe5xf6+ Kh6-h7 Qf6-g6+ Kh7-h8 Qg6-h6+
68/28 19:39 15,547,870k 13,179k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
69/28 21:00 16,659,620k 13,215k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
70/28 22:02 17,583,116k 13,296k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
71/28 22:46 18,248,995k 13,354k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
72/28 23:41 19,099,482k 13,435k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
73/28 26:23 21,312,433k 13,459k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
74/28 27:31 22,277,144k 13,492k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
75/28 30:46 24,516,916k 13,274k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
76/28 32:44 26,281,985k 13,378k +M14 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 Qd1-e2 Kf8-g7 Qe2-b5 Be6-f7 Nf3-g5 Qg4-h5 Qb5-e5+ Kg7-f8 Ng5-e6+ Bf7xe6 Qe5xh5 Be6-g8 Qh5-e5 Bg8-c4 Bc1-h6+ Kf8-f7 Bf1xc4+ Kf7-g6 Qe5-g7+ Kg6-h5 Qg7-g5+
77/28 1:26:08 81,245,570k 15,718k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
78/26 1:27:48 82,777,701k 15,713k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
79/26 1:28:22 83,381,492k 15,725k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
80/26 1:29:54 84,949,281k 15,746k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
81/26 1:33:59 88,960,365k 15,775k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
82/26 1:35:59 90,775,479k 15,761k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
83/26 1:40:21 94,984,945k 15,775k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
84/26 1:43:03 97,534,410k 15,773k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
85/26 1:51:39 105,688,267k 15,775k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
86/26 1:56:50 110,615,507k 15,778k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
87/26 2:01:42 115,363,471k 15,797k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
88/26 2:08:26 121,998,940k 15,831k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
89/26 2:19:56 133,264,969k 15,872k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
90/26 2:32:25 145,481,072k 15,907k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
91/26 2:38:45 151,776,666k 15,934k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
92/26 2:49:51 162,614,332k 15,956k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
93/26 3:08:05 180,536,980k 15,998k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
94/26 3:34:36 207,078,508k 16,082k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
95/26 4:00:21 232,902,112k 16,150k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
96/26 4:32:29 262,259,031k 16,041k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
97/26 5:01:20 289,852,049k 16,031k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
98/26 5:26:32 315,044,909k 16,080k +M13 Nb1-c3 Qh4-g4 Ng1-f3 Ke8-f8 d2-d4 Bc8-e6 d4-d5 Be6-d7 d5-d6 Qg4-g6 Nf3-e5 Qg6-e6 Ne5xd7+ Kf8-e8 Bf1-b5 Ke8-f7 Bb5-c4 Qe6xc4 Qd1-h5+ Kf7-g7 Bc1-h6+ Kg7-h7 Nd7-f6+ Kh7-h8 Bh6-f8+
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Uri Blass wrote: Tue Jan 14, 2025 9:54 pm stockfish10 with 6 cores also found mate in 13 after 1.e4 Qh4 when I won a game OTB at the same time.

My guess is that 1.e4 with mate in 14 is the best move before 1.e4 Qh4.
1.Nc3 works in 14 moves too.
MultiPV=6, depth 46:

[d]2bqk3/8/8/8/8/2N5/PPPPPPPP/R1BQKBNR b KQ - 0 1

Code: Select all

2bqk3/8/8/8/8/2N5/PPPPPPPP/R1BQKBNR b KQ - 0 1

Analysis by ShashChess Dev:

1. +- (#13):  1...Le6 2.d4 Dh4 3.Sf3 Dh5 4.Se5 Kf8 5.Dd3 Kg7 6.Dg3+ Kh8 7.Se4 Lg4 8.Sf6 Df5 9.Dh4+ Lh5 10.Lh6 Dxc2 11.Dg3 Dh7 12.Sxh7 Lg6 13.Sf6 Lh7 14.Dg7#
2. +- (#13):  1...Dd6 2.e4 Ld7 3.d4 Kd8 4.Df3 Le8 5.Sd5 Lc6 6.Dg3 Dxg3 7.hxg3 Lxd5 8.exd5 Ke7 9.Th7+ Ke8 10.Lg5 Kf8 11.Ld3 Ke8 12.d6 Kf8 13.d7 Kg8 14.d8D#
3. +- (#13):  1...Lg4 2.d4 Da5 3.Dd3 Le6 4.e4 Dd8 5.Dg3 Df6 6.Sf3 Kf8 7.Se5 Dg7 8.Dh4 Kg8 9.Lh6 Da7 10.Df6 Dc7 11.Lb5 Db7 12.Ld7 Dxd7 13.Sxd7 Lxd7 14.Dg7#
4. +- (#13):  1...La6 2.e4 Lxf1 3.Dh5+ Kd7 4.Kxf1 De8 5.Dxe8+ Kxe8 6.h4 Kf7 7.d4 Kf8 8.h5 Kg7 9.h6+ Kh7 10.Lg5 Kg8 11.h7+ Kf8 12.h8D+ Kf7 13.Th7+ Kg6 14.Dg7#
5. +- (#13):  1...Kf8 2.Sf3 Lg4 3.d4 Kg7 4.Se5 Lh5 5.Dd2 Df6 6.Sd5 De6 7.Dg5+ Kf8 8.Dxh5 Kg7 9.e4 Dd6 10.Lg5 De6 11.Se7 Df6 12.Lh6+ Dxh6 13.Df7+ Kh8 14.Dg8#
6. +- (#13):  1...Dh4 2.Sf3 Dh5 3.d4 La6 4.Se5 Kf8 5.Dd2 Kg7 6.Df4 Lb7 7.e4 Lc8 8.Lc4 Lg4 9.Sxg4 Dg6 10.Dc7+ Kh8 11.Dd8+ Kh7 12.Sf6+ Kg7 13.Dg8+ Kxf6 14.Sd5#


As well as 1.d4:

[d]2bqk3/8/8/8/3P4/8/PPP1PPPP/RNBQKBNR b KQ - 0 1

Analysis by ShashChess Dev:

1...Lg4 2.Sf3 Le6 3.Se5 Dd6 4.Sc3 De7 5.e4 Dh7 6.Df3 Dg7 7.Dh5+ Kf8 8.Lh6 Ke7 9.Lxg7 Kd8 10.Lf6+ Kc8 11.Dh7 Lc4 12.Lxc4 Kb8 13.Sc6+ Ka8 14.Da7#
Tiefe: 51/26 00:00:28 1237MN
+- (#13)

MultiPV=4 at starting position, depth 51:

[d]2bqk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1

Code: Select all

Analysis by ShashChess Dev:

1. +- (#14):  1.d4 Le6 2.Sc3 Df6 3.Sf3 Kf8 4.Se5 Kg7 5.Dd3 Kh8 6.Dg3 Lf7 7.Se4 De7 8.Lg5 Db4+ 9.c3 Df8 10.Lf6+ Kh7 11.Dh4+ Dh6 12.Sg5+ Kg8 13.Dxh6 Lxa2 14.Dg7#

2. +- (#14):  1.Sc3 Kf7 2.d4 Kg8 3.Sf3 Lg4 4.Dd3 Lh5 5.Se5 Kg7 6.Dg3+ Kh8 7.e4 Kh7 8.Lc4 Df8 9.Dg5 Lf7 10.Sxf7 Dg7 11.Dh4+ Kg8 12.Se5+ Df7 13.Lxf7+ Kf8 14.Lh6#

3. +- (#14):  1.e4 Df6 2.d4 Kf8 3.Dh5 Kg7 4.Sf3 Le6 5.Se5 Lg8 6.Sc3 Dd6 7.Lg5 De6 8.Lc4 Db6 9.Lxg8 Kxg8 10.Df7+ Kh8 11.Lf6+ Dxf6 12.Dxf6+ Kh7 13.Dg6+ Kh8 14.Sf7#

4. +- (#15):  1.Sf3 Kd7 2.d4 Kc7 3.e4 Kb7 4.Se5 Ld7 5.Sxd7 Dxd7 6.Sc3 De6 7.Df3 Dd6 8.Dg4 Db6 9.Lf4 Dd8 10.De6 Db6 11.Dd7+ Ka8 12.Dc8+ Ka7 13.Sb5+ Dxb5 14.Lxb5 Kb6 15.Da6#
But after a little extra- Forward- Backward with 1.Nf3:

[d]2bqk3/8/8/8/8/5N2/PPPPPPPP/RNBQKB1R b KQ - 0 1

Analysis by ShashChess Dev:

1...Dc7 2.e4 Lg4 3.d4 Dg7 4.Sc3 Kf8 5.Dd3 Le6 6.Se5 Df6 7.Dg3 Ke8 8.Lg5 Dg7 9.Df4 Lf7 10.Lb5+ Kf8 11.Lh6 Kg8 12.Lxg7 Le8 13.Df8+ Kh7 14.Dh8#
Tiefe: 52/26 00:00:54 2171MN
+- (#13)
:)
Peter.
peter
Posts: 3410
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: mating against part of the set

Post by peter »

Edit- time over again.

Depth 69, MultiPV=4:

[d]2bqk3/8/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1

Code: Select all

Analysis by ShashChess Dev:

1. +- (#14):  1.e4 Dh4 2.Sc3 Dg4 3.Sf3 Le6 4.d4 Kf8 5.Dd3 Dh5 6.Da6 Dg6 7.Se5 De8 8.Lh6+ Kg8 9.Sd5 Kh7 10.Sf6+ Kxh6 11.Sxe8 Kh5 12.Dxe6 Kg5 13.Dg6+ Kf4 14.Df5#

2. +- (#14):  1.d4 Da5+ 2.Sc3 La6 3.Sf3 Kd8 4.e4 Lxf1 5.Txf1 Kc8 6.Se5 Kb7 7.Dh5 Db6 8.De8 Ka6 9.Sd7 Db7 10.Sc5+ Ka5 11.Sxb7+ Ka6 12.Dc6+ Ka7 13.Lf4 Ka8 14.Da6#

3. +- (#14):  1.Sc3 La6 2.Sf3 Kd7 3.d4 Kc8 4.Se5 Da5 5.e4 Lxf1 6.Txf1 Kb7 7.Dh5 Db6 8.De8 Ka6 9.Sd7 Db7 10.Sc5+ Ka5 11.Sxb7+ Ka6 12.Dc6+ Ka7 13.Lf4 Ka8 14.Da6#

4. +- (#14):  1.Sf3 Kd7 2.Sc3 Kc7 3.Se5 La6 4.d4 Kb7 5.e4 Lxf1 6.Txf1 Da5 7.Dh5 Db6 8.De8 Ka6 9.Sd7 Db7 10.Sc5+ Ka5 11.Sxb7+ Ka6 12.Dc6+ Ka7 13.Lf4 Ka8 14.Da6#
Peter.