MESON Chess Problem Database

Problem Display
PID: 56039 (1qBBn2b/3PP3/R2Nk3/5RP1/1p3P2/1K6/8/8 w - - 0 1)

Mansfield, Comins

3/4 HM., Due Alfieri, 1979

1qBBn2b/3PP3/R2Nk3/5RP1/1p3P2/1K6/8/8

#2

10 + 5

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.dxe8Q#
      • 2.dxe8S#
      • 2.dxe8B#
      • 2.dxe8R#
    • 1...Qb6
      • 2.dxe8S#
    • 1...Qxc8
      • 2.dxc8Q#
      • 2.dxc8B#
    • 1...Be5
      • 2.Rxe5#
    • 1...Sf6
      • 2.Re5#
    • 1...Sg7
      • 2.Re5#
  • Tries
    • 1.Rfa5?
      • threat
        • 2.f5#
      • 1...Qxd6
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qxc8
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Sxd6
        • 2.e8Q#
      • 1...Qb6
        • 2.dxe8S#
      • 1...Sg7
        • 2.Re5#
      • 1...Qb5!
    • 1.Rb5?
      • threat
        • 2.f5#
      • 1...Qxd6
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qxc8
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Sxd6
        • 2.e8Q#
      • 1...Qb6
        • 2.dxe8S#
      • 1...Sg7
        • 2.Re5#
      • 1...Qxb5!
  • Keys
    • 1.Rc5!
      • threat
        • 2.f5#
      • 1...Qxd6
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qxc8
        • 2.dxc8Q#
        • 2.dxc8B#
      • 1...Sxd6
        • 2.e8Q#
      • 1...Qb6
        • 2.dxe8S#
      • 1...Sg7
        • 2.Re5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_GUARD::PXS(d)=S
    • Q(c);OGATE,XB(I)::PXQ(c)=Q
    • B(e);N_GUARD::R1(C),XB(e)
    • S(d);S_CUTB(e)::R1(C)
  • Tries
    • Try
      • R(C);
      • Threat
        • P(B)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c),XS(F)::PXS(d)=Q
        • Q(c);OGATE,XB(I)::PXQ(c)=Q
        • S(d);OGATE,P_SPINS(d),XS(F)::P=Q
        • Q(c);N_GUARD::PXS(d)=S
        • S(d);S_CUTB(e)::R1(C)
      • Refutation
        • Q(c);
    • Try
      • R(C);
      • Threat
        • P(B)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c),XS(F)::PXS(d)=Q
        • Q(c);OGATE,XB(I)::PXQ(c)=Q
        • S(d);OGATE,P_SPINS(d),XS(F)::P=Q
        • Q(c);N_GUARD::PXS(d)=S
        • S(d);S_CUTB(e)::R1(C)
      • Refutation
        • Q(c);XR(C)
  • Actual
    • R(C);
    • Threat
      • P(B)
    • Vars
      • Q(c);N_GUARD,P_SPINQ(c),XS(F)::PXS(d)=Q
      • Q(c);OGATE,XB(I)::PXQ(c)=Q
      • S(d);OGATE,P_SPINS(d),XS(F)::P=Q
      • Q(c);N_GUARD::PXS(d)=S
      • S(d);S_CUTB(e)::R1(C)
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