h#7.5
8/7k/8/3b4/8/bP6/8/K7 w - - 0 1
- Ka2 Kg6 Kxa3 Kf5 b4 Ke4 b5 Kd3 b6 Kc2 b7 Kb1 b8=Q+ Ka1 Qb2#
KPvkbb
5 pieces.
- h#9.5
- longest mate
- h#7.5
- deepest unique
- 448
- positions at that depth
- h#7.5
- deepest dual
- h#7.5
- deepest strict dual
- 265,002,175
- positions with a helpmate
- 2,946,491
- with a unique solution
- 355,074,048
- cells in the plane
- 159,327,756 bytes
- on disk
Deepest unique problems
h#7.5
8/5b1k/5b2/8/8/8/4P3/K7 w - - 0 1
- Kb1 Kg6 Kc1 Kf5 e4+ Ke6 e5 Kd5 e6 Kc4 e7 Kb3 e8=Q Ka2 Qa4#
pure model mirror promotion excelsior excelsior:white single-piece single-piece:black nocapture umnov
Note: the side to move is in check in the diagram.
h#7.5
7k/6b1/8/8/2b5/8/3P4/K7 w - - 0 1
- d4 Kh7 Kb2 Kg6 Ka3 Kf5 d5 Ke4 d6 Kd3 d7 Kc2 d8=Q Kb1 Qd1#
pure model mirror promotion excelsior excelsior:white single-piece single-piece:black nocapture nocheck
Note: the side to move is in check in the diagram.
Deepest dual problems
h#7.5
6k1/8/8/8/8/3b4/1K1P4/2b5 w - - 0 1
Two solutions, with different first and last moves (2 starts, 2 ends).
- Kc3 Bc4 d3 Kf7 dxc4 Ke6 c5 Kd5 c6 Kc5 c7 Kb5 c8=Q Ka4 Qa6#
- Kxc1 Be4 d3 Kf7 dxe4 Ke6 e5 Kd5 e6 Kc4 e7 Kb3 e8=Q Ka2 Qa4#
pure model ideal mirror promotion excelsior excelsior:white nocheck umnov
Note: the side to move is in check in the diagram.