MESON Chess Problem Database

Problem Display
PID: 10281 (7Q/3nnr2/1p2P3/3k3B/1P6/2KN1pB1/4PN2/3R4 w - - 0 1)

Mansfield, Comins

Postsjakk, 1963

7Q/3nnr2/1p2P3/3k3B/1P6/2KN1pB1/4PN2/3R4

#2

10 + 6

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sf4#
  • Tries
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qxd7#
      • 1...Kxe6!
    • 1.Qa8+?
      • 1...Sc6
        • 2.Sc5#
        • 2.Qa2#
      • 1...Kxe6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxd7#
      • 1...Kc6
        • 2.Qxd7#
      • 1...Kxe6
        • 2.Qxf7#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Se5
        • 2.Sf4#
      • 1...Sf6
        • 2.Sc5#
      • 1...Sb8
        • 2.Sc5#
      • 1...Sf8
        • 2.Sc5#
      • 1...Sf5
        • 2.Bxf3#
      • 1...Sc6
        • 2.e4#
      • 1...Sg6
        • 2.Se5#
      • 1...Sc8
        • 2.Se5#
      • 1...Sg8
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::R(A)+S(E),DCHECK
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(J),XS(d)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(I)
  • Actual
    • Q(J);
    • Threat
      • QAR2(J),XS(d)
    • Vars
      • K(b);P_SPINS(d),S_FLIGHT::QAB1(J),XS(d)
      • K(b);OGATEB,P_SPINS(e),S_FLIGHT,XP(I)::QAB1(J),XR(f)
      • S(d);::R(A)+S(E),XS(d)
      • S(d);SBLOCK::R(A)+S(E),DCHECK
      • S(d);::R(A)+S(E)
      • S(e);S_CUTR(f)::B(H),XP(a)
      • S(e);SBLOCK::P(B)
      • S(e);::R(A)+S(E)
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