MESON Chess Problem Database

Problem Display
PID: 80636 (q7/p4Pp1/2Qr1kN1/6rP/2Bp1p1B/5KNp/4P3/b1nR1R2 w - - 0 1)

Eckett, SW

The Field, 1947

(First published on Sat Aug 16 1947)

q7/p4Pp1/2Qr1kN1/6rP/2Bp1p1B/5KNp/4P3/b1nR1R2

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.fxe8S#
    • 1...Qg8
      • 2.Qxd6#
      • 2.fxg8S#
    • 1...Qh8
      • 2.Qxd6#
    • 1...fxg3
      • 2.Ke4#
  • Keys
    • 1.e4!
      • threat
        • 2.Qxd6#
        • 2.e5#
      • 1...Qxc6
        • 2.f8Q#
        • 2.f8R#
      • 1...Rxc6
        • 2.e5#
      • 1...fxg3
        • 2.Qxd6#
      • 1...dxe4 ep
        • 2.Rxd6#
      • 1...fxe4 ep
        • 2.Ke4#
      • 1...Re6
        • 2.Qxe6#
      • 1...Qb8
        • 2.e5#
      • 1...Qc8
        • 2.e5#
      • 1...Qd8
        • 2.e5#
      • 1...Qe8
        • 2.fxe8S#
      • 1...Qf8
        • 2.e5#
      • 1...Sd3
        • 2.Qxd6#
      • 1...d3
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • Q(k);N_PINQ(I),OGATE::PXQ(k)=S
    • Q(k);N_PINQ(I)::QAR2(I),XR(g)
    • P(e);XS(E)::R(B)+K(D)
  • Actual
    • P(C);N_SPINQ(I)
    • Threat
      • DUALS(2)
    • Vars
      • Q(k);N_GUARD,P_PINP(C),XQ(I)::P=Q
      • R(g);XQ(I)::P(C)
      • P(e);XS(E)::QAR2(I),XR(g)
      • P(d);EP,OGATE,P_PINQ(I),XP(C)::R(A),XR(g)
      • P(e);EP,P_PINQ(I),XP(C)::R(B)+K(D)
      • R(g);OGATE::QAR1(I),XR(g)
      • Q(k);::P(C)
      • Q(k);OGATE::PXQ(k)=S
      • S(b);::QAR2(I),XR(g)
      • P(d);::QAR2(I),XR(g)
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