MESON Chess Problem Database

Problem Display
PID: 9559 (8/P7/K1p5/8/1NN1k3/5p1B/1B5q/2Qn3b w - - 0 1)

Heathcote, Godfrey

Revue d'Echecs, 1905

8/P7/K1p5/8/1NN1k3/5p1B/1B5q/2Qn3b

#2

7 + 6

15 British Chess Magazine 1905

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sd6#
    • 1...Qf4
      • 2.Qb1#
      • 2.Qc2#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qc2
      • 2.Sd6#
    • 1...Qf2
      • 2.Sd6#
    • 1...Qg2
      • 2.Sd6#
    • 1...Qxh3
      • 2.Sd6#
    • 1...Sxb2
      • 2.Qe3#
    • 1...Sf2
      • 2.Qe3#
    • 1...Sc3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...c5
      • 2.a8Q#
      • 2.a8B#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Bf5#
        • 2.Qf5#
      • 1...Qxb2
        • 2.Qh4#
        • 2.Qg4#
      • 1...Qxh3
        • 2.Sd2#
        • 2.Sd6#
        • 2.Qe5#
      • 1...Sxb2
        • 2.Qe3#
      • 1...Sc3
        • 2.Qe3#
      • 1...f2
        • 2.Sd2#
        • 2.Qf5#
      • 1...Qe5
        • 2.Sd2#
        • 2.Qxe5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Qf4!
  • Keys
    • 1.Qh6!
      • 1...Qxb2
        • 2.Qh4#
      • 1...Qxh3
        • 2.Sd6#
      • 1...Sxb2
        • 2.Qe3#
      • 1...Sc3
        • 2.Qe3#
      • 1...f2
        • 2.Sd2#
      • 1...Qg1
        • 2.Sd2#
        • 2.Sd6#
      • 1...Qg3
        • 2.Sd2#
      • 1...Qf4
        • 2.Qxc6#
      • 1...Qe5
        • 2.Sd2#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qc7
        • 2.Sd2#
      • 1...Qb8
        • 2.Sd2#
      • 1...Qc2
        • 2.Sd6#
        • 2.Qh4#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qe2
        • 2.Qh4#
      • 1...Qf2
        • 2.Sd6#
      • 1...Qg2
        • 2.Sd6#
      • 1...Bg2
        • 2.Sd2#
      • 1...Sf2
        • 2.Sd2#
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...c5
        • 2.a8Q#
        • 2.a8B#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::S(E)
    • Q(c);N_GUARD::S(E),XQ(c)
    • Q(c);N_GUARD,XB(C)::S(E)
    • S(a);N_GUARD,XB(B)::QAR1(A)
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
    • P(f);::P=Q
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XB(B)::QAR1(A)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • Q(c);
  • Actual
    • Q(A);
    • Vars
      • Q(c);N_GUARD,XB(B)::QAR(A)
      • Q(c);N_GUARD,XB(C)::S(E)
      • S(a);N_GUARD,XB(B)::QAR1(A)
      • S(a);N_GUARD::QAR1(A)
      • P(d);S_CUTQ(c)::S(E)
      • Q(c);N_GUARD::S(E)
      • Q(c);SBLOCK::QAB(A),XP(f)
      • Q(c);N_GUARD::S(E),XQ(c)
      • Q(c);N_GUARD,P_PINS(E)::QAR(A)
      • B(b);S_CUTQ(c)::S(E)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • P(f);::P=Q
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