MESON Chess Problem Database

Problem Display
PID: 134915 (k6q/2KP4/N1N5/3B4/8/8/8/8 w - - 0 1)

Lipton, Michael

The Problemist, 2009

k6q/2KP4/N1N5/3B4/8/8/8/8

#2

5 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.d8Q#
      • 2.d8R#
    • 1...Qc3
      • 2.d8Q#
      • 2.d8R#
    • 1...Qd4
      • 2.d8Q#
      • 2.d8R#
    • 1...Qh1
      • 2.d8Q#
      • 2.d8R#
    • 1...Qh5
      • 2.d8Q#
      • 2.d8R#
    • 1...Qh6
      • 2.d8Q#
      • 2.d8R#
    • 1...Qc8+
      • 2.dxc8Q#
      • 2.dxc8R#
    • 1...Qe8
      • 2.dxe8Q#
      • 2.dxe8R#
  • Keys
    • 1.Kb6!
      • threat
        • 2.Sc7#
        • 2.Scb4#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sa7#
        • 2.Se7#
        • 2.Scb8#
        • 2.Sd8#
      • 1...Qb2+
        • 2.Scb4#
      • 1...Qd4+
        • 2.Sxd4#
      • 1...Qb8+
        • 2.Scxb8#
      • 1...Qd8+
        • 2.Sxd8#
      • 1...Qc3
        • 2.Sc7#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qf6
        • 2.Sc7#
      • 1...Qh1
        • 2.Sc7#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qh2
        • 2.Scb4#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sa7#
        • 2.Se7#
        • 2.Scb8#
        • 2.Sd8#
      • 1...Qh5
        • 2.Sc7#
        • 2.Se5#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qh6
        • 2.Sc7#
        • 2.d8Q#
        • 2.d8R#
      • 1...Qc8
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Qg8
        • 2.Sc7#

This anticipates 135584(2009)

This is a version of 134914

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::P=Q
    • Q(b);N_GUARD,P_PINS(C)::P=Q
    • Q(b);N_GUARD,SBLOCK::P=Q
    • Q(b);CHECK,OGATE::PXQ(b)=Q
    • Q(b);OGATE::PXQ(b)=Q
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • DUALS(9)
    • Vars
      • Q(b);CHECK::B(A)+S(C)
      • Q(b);CHECK::B(A)+S(C),XQ(b)
      • Q(b);::B(A)+S(C),XQ(b)
      • Q(b);P_PINS(C)::S(B)
      • Q(b);OGATE::PXQ(b)=Q
      • Q(b);::S(B)
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