MESON Chess Problem Database

Problem Display
PID: 272673 (8/3pB3/3Np3/8/3kBp2/1R1P4/8/3R2K1 w - - 0 1)

Scott, AT

The Problemist, 1957

8/3pB3/3Np3/8/3kBp2/1R1P4/8/3R2K1

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.d4#
    • 1...Ke5
      • 2.d4#
    • 1...e5
      • 2.Sf5#
  • Tries
    • 1.Kf1?
      • 1...Ke3
        • 2.d4#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.d4#
      • 1...e5
        • 2.Sf5#
      • 1...f3!
    • 1.Kf2?
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.d4#
      • 1...e5
        • 2.Sb5#
        • 2.Sf5#
      • 1...f3!
  • Keys
    • 1.Bf3!
      • 1...Ke3
        • 2.d4#
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.d4#
      • 1...e5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATE,S_FLIGHT::P(D)
    • P(c);N_GUARD,SBLOCK::S(F)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);OGATE,S_FLIGHT::R(C)+P(D)
        • K(a);OGATE,S_FLIGHT::P(D)
        • P(c);N_GUARD,SBLOCK::S(F)
      • Refutation
        • P(b);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);OGATE,S_FLIGHT::P(D)
      • Refutation
        • P(b);
  • Actual
    • B(E);
    • Vars
      • K(a);OGATE,S_FLIGHT::R(C)+P(D)
      • K(a);OGATE,S_FLIGHT::P(D)
      • P(c);N_GUARD,SBLOCK::S(F)
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