MESON Chess Problem Database

Problem Display
PID: 145961 (1NbRq3/2PpP3/3k4/1BnNnP2/2PPP3/3p4/8/1K6 w - - 0 1)

Lipton, Michael

The Problemist, 1952

1NbRq3/2PpP3/3k4/1BnNnP2/2PPP3/3p4/8/1K6

#2

11 + 7

14867 BCPS Library 2012
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.exf8Q#
      • 2.exf8B#
  • Keys
    • 1.Sxd7!
      • threat
        • 2.dxc5#
        • 2.dxe5#
      • 1...Qxd7
        • 2.e8S#
      • 1...Qxe7
        • 2.dxc5#
      • 1...Bxd7
        • 2.c8S#
      • 1...Sxe4
        • 2.dxe5#
      • 1...Scxd7
        • 2.c5#
      • 1...Sxc4
        • 2.dxc5#
      • 1...Sexd7
        • 2.e5#
      • 1...Qh8
        • 2.dxc5#
      • 1...Sb3
        • 2.dxe5#
      • 1...Sa4
        • 2.dxe5#
      • 1...Sa6
        • 2.dxe5#
      • 1...Se6
        • 2.dxe5#
      • 1...Sb7
        • 2.dxe5#
      • 1...Sf3
        • 2.dxc5#
      • 1...Sg4
        • 2.dxc5#
      • 1...Sc6
        • 2.dxc5#
      • 1...Sg6
        • 2.dxc5#
      • 1...Sf7
        • 2.dxc5#

This anticipates 110601(1983)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 18
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE::PXQ(g)=Q
  • Actual
    • S(J);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);OGATE,P_SPINQ(g),XS(J)::P=S
      • Q(g);XP(I)::P(C),XS(b)
      • B(f);OGATE,P_SPINB(f),XS(J)::P=S
      • S(b);XP(D)::P(C),XS(c)
      • S(b);OGATE,P_SPINS(b),XS(J)::P(B)
      • S(c);XP(B)::P(C),XS(b)
      • S(c);OGATE,P_SPINS(c),XS(J)::P(D)
      • Q(g);::P(C),XS(b)
      • S(b);::P(C),XS(c)
      • S(c);::P(C),XS(b)
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