MESON Chess Problem Database

Problem Display
PID: 253355 (8/6R1/8/4k3/4N1B1/8/2R2B2/K1N5 w - - 0 1)

Anonymous

English Mechanic and World of Science, 1888

(First published on Fri Jun 22 1888)

8/6R1/8/4k3/4N1B1/8/2R2B2/K1N5

#2

7 + 1

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6
        • 2.Bd4#
      • 1...Kd6!
    • 1.Re2?
      • 1...Kf4
        • 2.Sd3#
        • 2.Bg3#
      • 1...Kd5!
    • 1.Rc4?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd5!
    • 1.Rg5+?
      • 1...Kxe4
        • 2.Rc4#
      • 1...Kf4!
    • 1.Re7+?
      • 1...Kd5
        • 2.Rc5#
      • 1...Kf4!
  • Keys
    • 1.Sf6!
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Bg3#
      • 1...Kxf6
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(B)
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XS(E)::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::S(B)
      • K(a);N_GUARD,S_FLIGHT::B(D)
      • K(a);N_GUARD,S_FLIGHT,XS(E)::B(D)
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