MESON Chess Problem Database

Problem Display
PID: 221677 (5b2/1Kpk4/n1NpR1Pn/4pR2/N2QP3/8/8/8 w - - 0 1)

Blanshard, CT

The Field, 1892

(First published on Sat Nov 12 1892)

5b2/1Kpk4/n1NpR1Pn/4pR2/N2QP3/8/8/8

#2

8 + 7

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Rxe7#
    • 1...Bg7
      • 2.Re7#
    • 1...Sb4
      • 2.Sc5#
    • 1...Sc5+
      • 2.Sxc5#
    • 1...Sb8
      • 2.Sc5#
  • Tries
    • 1.Sb6+?
      • 1...Kxe6
        • 2.Qd5#
      • 1...cxb6!
    • 1.Sxe5+?
      • 1...Kd8
        • 2.Rxf8#
      • 1...Kxe6!
    • 1.Rf7+?
      • 1...Kxe6
        • 2.Sd8#
        • 2.Qd5#
      • 1...Be7
        • 2.Rexe7#
        • 2.Rfxe7#
      • 1...Sxf7!
  • Keys
    • 1.g7!
      • threat
        • 2.gxf8S#
      • 1...Sc5+
        • 2.Sxc5#
      • 1...Kxe6
        • 2.gxf8S#
      • 1...Bxg7
        • 2.Re7#
      • 1...Be7
        • 2.Rxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::R1(F),XB(g)
    • B(g);N_GUARD::R1(F)
    • S(b);N_GUARD::S(A)
    • S(b);CHECK,N_GUARD::S(A),XS(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(f);N_SPINP(c),S_FLIGHT,XR(F)::QAB1(B)
      • Refutation
        • P(e);XS(A)
    • Try
      • S(E);CHECK,XP(a)
      • Vars
        • K(f);P-FLIGHT::R(D),XB(g)
      • Refutation
        • K(f);N_SPINP(c),S_FLIGHT,XR(F)
    • Try
      • R(D);CHECK
      • Refutation
        • S(d);XR(D)
  • Actual
    • P(G);
    • Threat
      • PXB(g)=S
    • Vars
      • S(b);CHECK,N_GUARD::S(A),XS(b)
      • K(f);N_SPINP(c),S_FLIGHT,XR(F)::PXB(g)=S
      • B(g);N_GUARD,XP(G)::R1(F)
      • B(g);N_GUARD::R1(F),XB(g)
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