MESON Chess Problem Database

Problem Display
PID: 4878 (1NR5/4B1b1/8/p2p1Pp1/n2k2p1/1p1P4/1p4PQ/1B1R1NK1 w - - 0 1)

Blake, Percy Francis

American Chess Monthly, 1893

1NR5/4B1b1/8/p2p1Pp1/n2k2p1/1p1P4/1p4PQ/1B1R1NK1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Bxf6#
    • 1...Bh6
      • 2.Bf6#
    • 1...Bf8
      • 2.Bf6#
    • 1...Bh8
      • 2.Qxh8#
    • 1...Sc3
      • 2.Sc6#
      • 2.Bc5#
  • Keys
    • 1.g3!
      • 1...Ke5
        • 2.d4#
      • 1...Sc5
        • 2.Qxb2#
      • 1...Be5
        • 2.Qf2#
      • 1...Bf6
        • 2.Bxf6#
      • 1...Bh6
        • 2.Bf6#
      • 1...Bf8
        • 2.Bf6#
      • 1...Bh8
        • 2.Qxh8#
      • 1...Sc3
        • 2.Sc6#
      • 1...Sb6
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(i);N_GUARD::B(I),XB(i)
    • B(i);N_GUARD::B(I)
    • B(i);OGATEB::QAB(F),XB(i)
  • Actual
    • P(E);
    • Vars
      • K(d);OGATE,S_FLIGHT::P(G)
      • S(c);N_GUARD::QAB(F),XP(a)
      • B(i);SBLOCK::QAB(F)
      • B(i);N_GUARD::B(I),XB(i)
      • B(i);N_GUARD::B(I)
      • B(i);OGATEB::QAB(F),XB(i)
      • S(c);SBLOCK::S(J)
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