MESON Chess Problem Database

Problem Display
PID: 56033 (K2nr3/p1QPk1Pb/r1p3pN/6N1/B6P/8/8/8 w - - 0 1)

Mansfield, Comins

2nd HM., L'Italia Scacchistica, 1979

K2nr3/p1QPk1Pb/r1p3pN/6N1/B6P/8/8/8

#2

8 + 8

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.dxe8S#
    • 1...Se6+
      • 2.d8Q#
      • 2.d8B#
    • 1...Sb7+
      • 2.d8Q#
      • 2.d8B#
    • 1...Sf7+
      • 2.d8Q#
      • 2.d8B#
    • 1...c5
      • 2.dxe8S#
  • Tries
    • 1.Shf7?
      • threat
        • 2.Qd6#
      • 1...Se6+
        • 2.d8Q#
        • 2.d8B#
      • 1...Sb7+
        • 2.d8Q#
        • 2.d8B#
      • 1...Sxf7+
        • 2.d8Q#
        • 2.d8B#
      • 1...c5
        • 2.dxe8S#
      • 1...Kf6!
    • 1.dxe8Q+?
      • 1...Kf6
        • 2.Se4#
        • 2.Sxh7#
        • 2.Qce5#
        • 2.Qce7#
        • 2.Qee5#
        • 2.Qee7#
        • 2.Qexd8#
      • 1...Kxe8!
    • 1.dxe8R+?
      • 1...Kf6
        • 2.Se4#
        • 2.Sxh7#
        • 2.Qe5#
        • 2.Qe7#
      • 1...Kxe8!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qd6#
      • 1...Se6+
        • 2.d8Q#
        • 2.d8B#
      • 1...Sb7+
        • 2.d8S#
      • 1...Sf7+
        • 2.d8S#
      • 1...Ke6
        • 2.Qd6#
      • 1...c5
        • 2.dxe8Q#
        • 2.dxe8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(e);S_FLIGHT::PXR(h)=S
    • S(g);CHECK,OGATE::P=Q
    • P(b);::PXR(h)=S
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(E)
      • Vars
        • S(g);CHECK,OGATE::P=Q
        • S(g);CHECK,OGATE,XS(D)::P=Q
        • P(b);::PXR(h)=S
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(F);CHECK,XR(h)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(b),XQ(F)
    • Try
      • P(F);CHECK,XR(h)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(b),XR(F)
  • Actual
    • S(C);
    • Threat
      • QAB1(E)
    • Vars
      • S(g);CHECK,OGATE,SBLOCK::P=Q
      • S(g);CHECK,OGATE::P=S
      • K(e);P-FLIGHT::QAR1(E)
      • P(b);::PXR(h)=Q
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