MESON Chess Problem Database

Problem Display
PID: 158087 (2R2Q2/4r2r/Rp3p1q/4N1B1/1k4np/8/1P6/N3KB2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Main-Post, 1960

2R2Q2/4r2r/Rp3p1q/4N1B1/1k4np/8/1P6/N3KB2

#2

9 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Bd2#
    • 1...Qxf8
      • 2.Bd2#
    • 1...Qh5
      • 2.Bd2#
    • 1...Qg6
      • 2.Bd2#
    • 1...Rh8
      • 2.Qxe7#
  • Tries
    • 1.Ra3?
      • threat
        • 2.Sc2#
      • 1...Qg6
        • 2.Bd2#
      • 1...Se3!
    • 1.Rc3?
      • threat
        • 2.Sc2#
      • 1...Se3
        • 2.Sc6#
      • 1...Qg6!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Sc2#
      • 1...Qg6
        • 2.Bd2#
      • 1...Se3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD::B(F)
    • Q(f);N_GUARD,N_SPINR(g),XQ(I)::B(F)
    • R(h);N_GUARD::QAB(I),XR(g)
  • Tries
    • Try
      • R(G);
      • Threat
        • S(A)
      • Vars
        • Q(f);N_GUARD::B(F)
      • Refutation
        • S(b);N_PINS(E)
    • Try
      • R(H);
      • Threat
        • S(A)
      • Vars
        • S(b);N_PINS(E)::S(E)
      • Refutation
        • Q(f);
  • Actual
    • B(C);
    • Threat
      • S(A)
    • Vars
      • Q(f);N_GUARD::B(F)
      • S(b);N_PINS(E)::S(E)
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