MESON Chess Problem Database

Problem Display
PID: 9853 (1K3Qn1/5Pp1/4pNkq/4R3/8/8/8/8 w - - 0 1)

Mansfield, Comins

Bournemouth Evening Echo, 1960

1K3Qn1/5Pp1/4pNkq/4R3/8/8/8/8

#2

5 + 5

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Tries
    • 1.fxg8Q?
      • threat
        • 2.Qgf7#
        • 2.Qff7#
      • 1...Qc1
        • 2.Qfxg7#
        • 2.Qh7#
        • 2.Qgxg7#
      • 1...Qd2
        • 2.Qfxg7#
        • 2.Qh7#
        • 2.Qgxg7#
      • 1...Qe3
        • 2.Qfxg7#
        • 2.Qh7#
        • 2.Qgxg7#
      • 1...Qf4
        • 2.Qfxg7#
        • 2.Qh7#
        • 2.Qgxg7#
      • 1...Qg5
        • 2.Qfxg7#
        • 2.Qh7#
        • 2.Qgxg7#
      • 1...Qh1
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qh2
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qh3
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qh4
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qh5
        • 2.Qfxg7#
        • 2.Qgxg7#
      • 1...Qh7
        • 2.Qxh7#
      • 1...Qh8!
    • 1.fxg8S?
      • threat
        • 2.Se7#
        • 2.Qe8#
      • 1...Qc1
        • 2.Qe8#
      • 1...Qd2
        • 2.Qe8#
      • 1...Qe3
        • 2.Qe8#
      • 1...Qf4
        • 2.Qe8#
      • 1...Qg5
        • 2.Qe8#
      • 1...Qh1
        • 2.Qe8#
      • 1...Qh2
        • 2.Qe8#
      • 1...Qh3
        • 2.Qe8#
      • 1...Qh4
        • 2.Qe8#
      • 1...Qh5
        • 2.Qe8#
      • 1...Qh7
        • 2.Qe8#
      • 1...Qh8
        • 2.Qe8#
      • 1...gxf6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.fxg8S#
        • 2.f8Q#
        • 2.f8R#
      • 1...Kxf6
        • 2.Qxe6#
      • 1...Sxf6
        • 2.f8S#
      • 1...gxf6
        • 2.fxg8Q#
      • 1...Qc1
        • 2.fxg8S#
      • 1...Qd2
        • 2.fxg8S#
      • 1...Qe3
        • 2.fxg8S#
      • 1...Qf4
        • 2.fxg8S#
      • 1...Qg5
        • 2.fxg8S#
      • 1...Qh1
        • 2.fxg8S#
      • 1...Qh2
        • 2.fxg8S#
      • 1...Qh3
        • 2.fxg8S#
      • 1...Qh4
        • 2.fxg8S#
      • 1...Qh5
        • 2.fxg8S#
      • 1...Qh7
        • 2.fxg8S#
      • 1...Qh8
        • 2.fxg8S#
      • 1...Se7
        • 2.f8Q#
        • 2.f8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);P_PINP(d),XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_GUARD::QAB1(C),XQ(c)
      • Refutation
        • Q(c);
    • Try
      • P(C);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::QAB(E)
        • Q(c);P_PINR(A)::QAB(E)
      • Refutation
        • P(d);XS(B)
  • Actual
    • Q(E);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XS(B)::QAR1(E),XP(a)
      • S(e);SBLOCK,XS(B)::P=S
      • P(d);SBLOCK,XS(B)::PXS(e)=Q
      • Q(c);::PXS(e)=S
      • Q(c);P_PINR(A)::PXS(e)=S
      • S(e);::P=Q
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