MESON Chess Problem Database

Problem Display
PID: 258422 (8/3B2R1/8/3Nk3/1P6/8/2K5/7Q w - - 0 1)

Nield, Joshua

English Mechanic and World of Science, 1892

(First published on Fri Sep 16 1892)

8/3B2R1/8/3Nk3/1P6/8/2K5/7Q

#2

6 + 1

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6!
    • 1.Rg5+?
      • 1...Kd4
        • 2.Qh4#
      • 1...Kd6!
    • 1.Re7+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxe4!
    • 1.Qd1?
      • 1...Ke4
        • 2.Re7#
      • 1...Kd6!
  • Keys
    • 1.Sf6!
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kxf6
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::R(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(A)
      • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • K(a);N_GUARD,S_FLIGHT,XS(D)::QAB(A)
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