MESON Chess Problem Database

Problem Display
PID: 21524 (n7/1B6/8/2pN2b1/K1kp1p1R/R7/4P3/B3n3 w - - 0 1)

Funk, Henry E

Good Companions (November), 1919

n7/1B6/8/2pN2b1/K1kp1p1R/R7/4P3/B3n3

#2

7 + 7

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.exd3#
    • 1...Sb6+
      • 2.Sxb6#
    • 1...Sc7
      • 2.Sb6#
    • 1...d3
      • 2.Se3#
    • 1...f3
      • 2.Rc3#
  • Tries
    • 1.Se3+?
      • 1...fxe3
        • 2.Rc3#
      • 1...dxe3!
    • 1.Rxf4?
      • threat
        • 2.Se3#
        • 2.Rc3#
      • 1...Sb6+
        • 2.Sxb6#
      • 1...Sc2
        • 2.Rc3#
      • 1...Sg2
        • 2.Rc3#
      • 1...Bxf4!
  • Keys
    • 1.e4!
      • threat
        • 2.Ba6#
      • 1...Sb6+
        • 2.Sxb6#
      • 1...dxe4 ep
        • 2.Sxe3#
      • 1...fxe4 ep
        • 2.Rc3#
      • 1...Sc7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);OGATE::P(B),XS(a)
    • S(g);CHECK,N_GUARD::S(F),XS(g)
    • S(g);N_GUARD::S(F)
    • P(c);N_GUARD,P_SPINP(d)::S(F)
    • P(d);P_SPINP(c)::R1(C)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(d);P_SPINP(c),XS(F)::R1(C)
      • Refutation
        • P(c);P_SPINP(d),XS(F)
    • Try
      • R(E);P_PINP(c),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);CHECK,N_GUARD::S(F),XS(g)
        • S(a);::R1(C)
      • Refutation
        • B(f);N_SPINP(c),XR(E)
  • Actual
    • P(B);
    • Threat
      • B(G)
    • Vars
      • S(g);CHECK,N_GUARD::S(F),XS(g)
      • P(c);EP,N_GUARD,P_SPINP(d),XP(B)::S(F),XP(c)
      • P(d);EP,P_SPINP(c),XP(B)::R1(C)
      • S(g);N_GUARD::S(F)
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