Skippers best moves

[Henk]

[d]8/5k2/3b4/2Nb4/1B2p1pP/4P3/7P/K7 w - - 0 57

Solution: Nc5-d3

[Henk]

[pgn] [Event "Computer Chess Game"] [Site "LAPTOP-1FK7MTIP"] [Date "2019.10.23"] [Round "-"] [White "SchaakMachine"] [Black "Fairy-Max 4.8V"] [Result "1/2-1/2"] [TimeControl "120"] [Annotator "1. +0.04 2... +0.19"] 1. e4 {+0.04/7} c5 2. Qh5 {+0.08/6 2.4} Nf6 {+0.19/9 4} 3. Qe2 {+0.00/6 2.3} d5 {+0.09/8 2.3} 4. exd5 {+0.06/7 2.3} Nxd5 {-0.20/8 2.5} 5. Qb5+ {-0.12/7 2.2} Nd7 {-0.23/9 4} 6. Qb3 {-0.11/6 2.2} Ne5 {-0.29/8 4} 7. Qb5+ {+0.00/7 2.1} Nd7 {-0.01/13 5} 8. Qb3 {+0.00/8 2.1} Ne5 {+0.00/13 2.6} 9. Qb5+ {+0.00/8 2.1} Nd7 {-0.01/14 6} {XBoard adjudication: repetition draw} 1/2-1/2 [/pgn]

[peter]

[d]8/5k2/3b4/2Nb4/1B2p1pP/4P3/7P/K7 w - - 0 57

Solution: Nc5-d3

Nc5-d3 is -#15.

[d]8/5k2/3b4/3b4/1B2p1pP/3NP3/7P/K7 b - - 0 1

Analysis by Cf Opt 181019 x64 POP N:

57...exd3 58.Be1 Bxh2 59.Kb2 g3 60.Kc3 g2 61.Bf2 Be4 62.h5 g1Q 63.Bxg1 Bxg1 64.Kd2 Kg7 65.h6+ Kxh6 66.Kc3 Bxe3 67.Kb3 d2 68.Kb2 d1Q 69.Kc3 Qa4 70.Kb2 Qc2+ 71.Ka3 Bc5#
-+ (-#15) Depth: 88/29 00:01:07 3147MN

[Spliffjiffer]

Nc5-d3 is -#15.

[d]8/5k2/3b4/3b4/1B2p1pP/3NP3/7P/K7 b - - 0 1

Analysis by Cf Opt 181019 x64 POP N:

57...exd3 58.Be1 Bxh2 59.Kb2 g3 60.Kc3 g2 61.Bf2 Be4 62.h5 g1Q 63.Bxg1 Bxg1 64.Kd2 Kg7 65.h6+ Kxh6 66.Kc3 Bxe3 67.Kb3 d2 68.Kb2 d1Q 69.Kc3 Qa4 70.Kb2 Qc2+ 71.Ka3 Bc5#
-+ (-#15) Depth: 88/29 00:01:07 3147MN

Nc5-d3 is -#14
[d]8/5k2/3b4/3b4/1B2p1pP/3NP3/7P/K7 b - - 0 1

with the "bring the king close as soon as possible"-algorythm turned on

[peter]

with the "bring the king close as soon as possible"-algorythm turned on

[Henk]

Another one:

[d]2b2rk1/1pp1qpp1/r3p2p/1Q1p4/3Pn3/PP6/4PPPP/R3KBNR w KQ - 1 15


Solution: a3-a4