KPvkrp
5 pieces.
- h#14.5
- longest mate
- h#8.5
- deepest unique
- 101
- positions at that depth
- h#8.5
- deepest dual
- h#7.5
- deepest strict dual
- 400,902,135
- positions with a helpmate
- 5,808,903
- with a unique solution
- 266,305,536
- cells in the plane
- 201,170,694 bytes
- on disk
Deepest unique problems
h#8.5
8/8/8/8/2k5/3p4/r2P4/1K6 w - - 0 1
- Kc1 Ra3 Kb2 Rc3 dxc3 Kb5 c4+ Ka4 c5 d2 c6 d1=R c7 Rd5 c8=Q Ra5 Qc4#
set-play promotion underpromotion excelsior excelsior:white closed-walk self-block phoenix umnov
Deepest dual problems
Deepest dual with different first and last moves: h#7.5. The deepest dual overall is h#8.5, where the two solutions share a first or a last move.
Only 2 distinct ideas exist at this depth.
h#7.5
1K6/8/8/8/2p5/r7/2P5/6k1 w - - 0 1
Two solutions, with different first and last moves (2 starts, 2 ends).
- Kc7 Rb3 cxb3 Kf2 b4 Ke3 b5 Kd4 b6 Kc5 b7 Kb5 b8=Q+ Ka6 Qb6#
- Kc8 Rd3 cxd3 Kf2 d4 Ke3 d5 Kd4 d6 Kc5 d7 Kb6 d8=Q+ Ka7 Qa5#
pure model mirror promotion excelsior excelsior:white closed-walk umnov
h#7.5
3K4/8/8/8/2p5/2r5/2P5/6k1 w - - 0 1
Two solutions, with different first and last moves (2 starts, 2 ends).
- Kc7 Rb3 cxb3 Kf2 b4 Ke3 b5 Kd4 b6 Kc5 b7 Kb5 b8=Q+ Ka6 Qb6#
- Kc8 Rd3 cxd3 Kf2 d4 Ke3 d5 Kd4 d6 Kc5 d7 Kb6 d8=Q+ Ka7 Qa5#
pure model mirror promotion excelsior excelsior:white closed-walk umnov