MESON Chess Problem Database

Problem Display
PID: 255136 (6R1/1K2k3/1N2p2N/4n1p1/2p3P1/2Bp3Q/3P4/8 w - - 0 1)

Laws, Benjamin Glover

English Mechanic and World of Science, 1889

(First published on Fri May 31 1889)

6R1/1K2k3/1N2p2N/4n1p1/2p3P1/2Bp3Q/3P4/8

#2

8 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Bb4#
    • 1...Sd7
      • 2.Sc8#
  • Tries
    • 1.Kc7?
      • 1...Sxg4
        • 2.Sc8#
      • 1...Sf3
        • 2.Sc8#
      • 1...Sc6
        • 2.Sc8#
      • 1...Sg6
        • 2.Sc8#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sf7
        • 2.Sc8#
      • 1...Kf6!
    • 1.Sc8+?
      • 1...Kf6
        • 2.Qf1#
        • 2.Qf3#
      • 1...Kd7!
    • 1.Qh2?
      • 1...Kd6
        • 2.Bb4#
      • 1...Sxg4
        • 2.Qc7#
      • 1...Sf3
        • 2.Qc7#
      • 1...Sc6
        • 2.Qc7#
      • 1...Sg6
        • 2.Qc7#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sf7
        • 2.Qc7#
      • 1...Kf6!
    • 1.Qg3?
      • 1...Kd6
        • 2.Bb4#
      • 1...Sxg4
        • 2.Qc7#
      • 1...Sf7
        • 2.Qc7#
      • 1...Sf3
        • 2.Qc7#
      • 1...Sc6
        • 2.Qc7#
      • 1...Sg6
        • 2.Qc7#
      • 1...Sd7
        • 2.Sc8#
      • 1...Kf6!
  • Keys
    • 1.Qe3!
      • 1...Kd6
        • 2.Bb4#
      • 1...Kf6
        • 2.Qxg5#
      • 1...Sxg4
        • 2.Qc5#
      • 1...Sf3
        • 2.Qc5#
      • 1...Sc6
        • 2.Qc5#
      • 1...Sg6
        • 2.Qc5#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sf7
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(f);N_GUARD,S_FLIGHT::B(B)
    • S(c);SBLOCK::S(E)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • S(c);XP(D)::S(E)
        • S(c);::S(E)
      • Refutation
        • K(f);P_SPINS(c),S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(f);N_GUARD,P_SPINS(c),S_FLIGHT::B(B)
        • S(c);OGATE,XP(D)::QAR2(C)
        • S(c);OGATE::QAR2(C)
        • S(c);SBLOCK::S(E)
      • Refutation
        • K(f);P_SPINS(c),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(f);N_GUARD,P_SPINS(c),S_FLIGHT::B(B)
        • S(c);OGATE,XP(D)::QAR2(C)
        • S(c);OGATE::QAR2(C)
        • S(c);SBLOCK::S(E)
      • Refutation
        • K(f);P_SPINS(c),S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(f);N_GUARD,S_FLIGHT::B(B)
      • K(f);N_GUARD,P_SPINS(c),S_FLIGHT::QAB1(C),XP(d)
      • S(c);P_SPINP(e),XP(D)::QAB(C)
      • S(c);P_SPINP(e)::QAB(C)
      • S(c);P_SPINP(e),SBLOCK::S(E)
      • S(c);P_SPINP(e),SBLOCK::S(F)
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