MESON Chess Problem Database

Problem Display
PID: 143823 (1RQ5/8/1N6/pkp5/8/8/P7/5K2 w - - 0 1)

Browne, Gordon

Weekly Irish Times, 1905

(First published on Sat Mar 11 1905)

1RQ5/8/1N6/pkp5/8/8/P7/5K2

#2

5 + 3

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxc4#
  • Tries
    • 1.Sc4+?
      • 1...Ka4
        • 2.Qd7#
        • 2.Qc6#
        • 2.Qe8#
      • 1...Kxc4!
    • 1.Qg4?
      • 1...Kc6
        • 2.Qd7#
      • 1...a4
        • 2.Qxa4#
      • 1...c4
        • 2.Qxc4#
      • 1...Ka6!
    • 1.a3?
      • 1...c4
        • 2.Qxc4#
      • 1...a4!
  • Keys
    • 1.Qe6!
      • 1...Kb4
        • 2.Qb3#
      • 1...Ka6
        • 2.Sc8#
      • 1...a4
        • 2.Sc4#
      • 1...c4
        • 2.Qxc4#

FEATURES

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