MESON Chess Problem Database

Problem Display
PID: 258621 (8/2K5/6Bn/2pk4/8/5P2/1Q3N2/8 w - - 0 1)

Geary, William

English Mechanic and World of Science, 1901

(First published on Fri Feb 1 1901)

8/2K5/6Bn/2pk4/8/5P2/1Q3N2/8

#2

5 + 3

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Bf7#
    • 1...Sf5
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...Sg8
      • 2.Bf7#
  • Tries
    • 1.Sd3?
      • 1...Ke6
        • 2.Qe5#
      • 1...c4
        • 2.Qe5#
      • 1...Sg4
        • 2.Bf7#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sg8
        • 2.Bf7#
      • 1...Kc4!
    • 1.Qf6?
      • 1...c4
        • 2.Qd6#
      • 1...Sg4
        • 2.Bf7#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sg8
        • 2.Bf7#
      • 1...Kc4!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Kc4!
    • 1.f4?
      • 1...Ke6
        • 2.Qe5#
      • 1...c4
        • 2.Qe5#
      • 1...Sg4
        • 2.Bf7#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sg8
        • 2.Bf7#
      • 1...Kc4!
  • Keys
    • 1.Sg4!
      • 1...Kc4
        • 2.Se3#
      • 1...Ke6
        • 2.Qe5#
      • 1...Sxg4
        • 2.Bf7#
      • 1...c4
        • 2.Qe5#
      • 1...Sf5
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Sg8
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::B(D)
    • S(c);N_GUARD::B(D),XS(c)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(A)
        • P(a);SBLOCK::QAR1(A)
        • S(c);N_GUARD::B(D)
        • S(c);N_GUARD::B(D),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);SBLOCK::QAR1(A)
        • S(c);N_GUARD::B(D)
        • S(c);N_GUARD::B(D),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(A)
        • P(a);SBLOCK::QAR1(A)
        • S(c);N_GUARD::B(D)
        • S(c);N_GUARD::B(D),XS(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::S(B)
      • K(b);N_GUARD,S_FLIGHT::QAR1(A)
      • S(c);N_GUARD,XS(B)::B(D)
      • P(a);SBLOCK::QAR1(A)
      • S(c);N_GUARD::B(D)
      • S(c);N_GUARD::B(D),XS(c)
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