MESON Chess Problem Database

Problem Display
PID: 20913 (8/2K1pp2/4k1p1/1R6/n3B1n1/8/8/5Q2 w - - 0 1)

Heathcote, Godfrey

Breslauer Zeitung, 1914

8/2K1pp2/4k1p1/1R6/n3B1n1/8/8/5Q2

#2

4 + 6

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Bd5#
    • 1...g5
      • 2.Qf5#
    • 1...f6
      • 2.Qc4#
  • Tries
    • 1.Bf5+?
      • 1...gxf5
        • 2.Qxf5#
      • 1...Kf6!
    • 1.Qf4?
      • threat
        • 2.Bd5#
      • 1...Sc3
        • 2.Rb6#
      • 1...Sc5
        • 2.Rb6#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Se3
        • 2.Re5#
        • 2.Qe5#
      • 1...Sf6
        • 2.Re5#
        • 2.Qe5#
      • 1...f5!
  • Keys
    • 1.Qa1!
      • 1...Sb2
        • 2.Qa6#
      • 1...Sc3
        • 2.Qa6#
      • 1...Se5
        • 2.Qxe5#
      • 1...f5
        • 2.Bd5#
      • 1...f6
        • 2.Qa2#
      • 1...Sc5
        • 2.Rb6#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Sf6
        • 2.Re5#
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...g5
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::B(B)
    • P(d);N_GUARD::QAB1(A)
    • P(f);SBLOCK::QAB(A)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • P(d);OGATE,XB(B)::QAB1(A),XP(d)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • B(B)
      • Vars
        • S(a);N_GUARD::R(C)
        • S(a);N_GUARD::R(C),XS(a)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Vars
      • S(a);OGATE::QAR(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(f);SBLOCK::B(B)
      • P(f);SBLOCK::QAB(A)
      • S(a);N_GUARD::R(C)
      • S(a);N_GUARD::R(C),XS(a)
      • S(b);N_GUARD::QAR1(A)
      • P(d);N_GUARD::B(B)
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