h#5
8/8/8/8/6k1/N4R2/8/K7 b - - 0 1
- Kg5 Rb3 Kf4 Rb2 Ke3 Nc2+ Kd2 Ne3+ Kc1 Rc2#
set-play single-piece single-piece:black nocapture umnov
Published as Maslar (1981)
- Maslar, Zdravko — Stern, 15/01/1981; Catalogue h# (CHM) avec 6 pieces, No. 784, 1995
KRNvk
4 pieces.
- h#7
- longest mate
- h#5
- deepest unique
- 19
- positions at that depth
- h#5
- deepest dual
- h#4.5
- deepest strict dual
- 2,938,940
- positions with a helpmate
- 271,171
- with a unique solution
- 1,892,352
- cells in the plane
- 1,750,866 bytes
- on disk
Deepest unique problems
h#5
8/N7/8/7k/R7/8/8/1K6 b - - 0 1
- Kg5 Ra6 Kf4 Nb5 Ke3 Re6+ Kd2 Re2+ Kd1 Nc3#
h#5
8/8/4k3/3R4/8/8/8/NK6 b - - 0 1
- Ke7 Rb5 Kd6 Rb2 Kc5 Nb3+ Kb4 Nc5+ Ka3 Rb3#
Deepest dual problems
Deepest dual with different first and last moves: h#4.5. The deepest dual overall is h#5, where the two solutions share a first or a last move.
Only one position exists at this depth.
h#4.5
4k2N/8/8/8/8/8/2R5/1K6 w - - 0 1
Two solutions, with different first and last moves (2 starts, 2 ends).
- Kc1 Kf8 Kd2 Kg7 Ke3 Kh6 Kf4 Kh5 Rh2#
- Kb2 Kd7 Kc3 Kc6 Nf7 Kb5 Nd6+ Ka4 Ra2#
pure model ideal mirror single-piece single-piece:black nocapture