MESON Chess Problem Database

Problem Display
PID: 222656 (7K/P7/p1pkB3/P7/3NQ3/8/8/6B1 w - - 0 1)

Hopkins, F O'Neill

English Mechanic and World of Science, 1884

(First published on Fri Jun 27 1884)

7K/P7/p1pkB3/P7/3NQ3/8/8/6B1

#2

7 + 3

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bh3?
      • 1...Kc7
        • 2.Qe7#
      • 1...c5
        • 2.Bh2#
      • 1...Kc5!
    • 1.Bg4?
      • 1...Kc7
        • 2.Qe7#
      • 1...c5
        • 2.Bh2#
      • 1...Kc5!
    • 1.Bf5?
      • 1...Kc7
        • 2.Qe7#
      • 1...c5
        • 2.Bh2#
      • 1...Kc5!
    • 1.Qh7?
      • 1...Kc5
        • 2.Qe7#
      • 1...c5
        • 2.Bh2#
      • 1...Ke5!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Qf8#
      • 1...Ke7!
    • 1.a8Q?
      • 1...Kc5
        • 2.Qf8#
      • 1...Kc7
        • 2.Bh2#
        • 2.Qexc6#
        • 2.Qf4#
        • 2.Qe5#
      • 1...c5
        • 2.Qd8#
      • 1...Ke7!
  • Keys
    • 1.Qh4!
      • 1...Kc5
        • 2.Qe7#
      • 1...Ke5
        • 2.Bh2#
      • 1...Kc7
        • 2.Qe7#
      • 1...c5
        • 2.Bh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Vars
        • K(c);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(c);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(c);S_FLIGHT::QAR2(C)
        • P(b);SBLOCK::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);S_FLIGHT::QAB(C)
        • P(b);SBLOCK::B(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(F);
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • P(b);SBLOCK::QAR2(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT::QAB(C)
      • K(c);S_FLIGHT::B(A)
      • K(c);S_FLIGHT::QAR2(C)
      • P(b);SBLOCK::B(A)
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