Popeye Linux-3.16.0-4-amd64-unknown-32Bit v4.76 (256 MB)

              Sam Loyd
   1st Prize, Chess Monthly, 1857

+---a---b---c---d---e---f---g---h---+
|                                   |
8   .   .   .   .   .   .   R   .   8
|                                   |
7   .   .   K   .   .   .   .   .   7
|                                   |
6   .   .   .   .   .   .   .   .   6
|                                   |
5   .   .   .   .   .   .   .   .   5
|                                   |
4   .   .   .   .   .  -P   .   .   4
|                                   |
3   .   .   .   .   .   .  -P   .   3
|                                   |
2   .   Q   .   .   .   S  -K   .   2
|                                   |
1   .   .   .   .   .   .   .   .   1
|                                   |
+---a---b---c---d---e---f---g---h---+
  #3                          4 + 3

   1.Sf2-g4 + !
      1...Kg2-f1
          2.Rg8-a8 threat:
                  3.Ra8-a1 #
      1...Kg2-h1
          2.Qb2-h2 +
              2...g3*h2
                  3.Sg4-f2 #
      1...Kg2-h3
          2.Sg4-h2 threat:
                  3.Rg8-h8 #
              2...g3-g2
                  3.Qb2-h8 #
              2...g3*h2
                  3.Qb2-h8 #
              2...Kh3-h4
                  3.Qb2-h8 #
      1...Kg2-f3
          2.Qb2-c2 zugzwang.
              2...g3-g2
                  3.Qc2-d3 #
      1...Kg2-g1
          2.Rg8-a8 threat:
                  3.Ra8-a1 #
          2.Rg8-d8 threat:
                  3.Rd8-d1 #


solution finished. Time = 1.318 s


