MESON Chess Problem Database

Problem Display
PID: 250917 (6K1/2n1N1R1/1R1nBkP1/p7/r2N1P2/1pB3r1/2q5/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

1st HM., Schach, 1993

6K1/2n1N1R1/1R1nBkP1/p7/r2N1P2/1pB3r1/2q5/8

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rf7#
    • 1...Se4
      • 2.Rf7#
    • 1...Sdb5
      • 2.Rf7#
    • 1...Sf5
      • 2.Rf7#
    • 1...Sb7
      • 2.Rf7#
    • 1...Sf7
      • 2.Rxf7#
    • 1...Sc8
      • 2.Rf7#
    • 1...Sde8
      • 2.Rf7#
    • 1...Scb5
      • 2.Sd5#
    • 1...Sd5
      • 2.Sxd5#
    • 1...Sa6
      • 2.Sd5#
    • 1...Sxe6
      • 2.Sd5#
    • 1...Sa8
      • 2.Sd5#
    • 1...Sce8
      • 2.Sd5#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Rf7#
      • 1...Se6
        • 2.Sd5#
      • 1...Qxg6!
    • 1.Bf5?
      • threat
        • 2.Rf7#
      • 1...Se6
        • 2.Sd5#
      • 1...Rxg6!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Rf7#
      • 1...Qxg6
        • 2.Sf3#
      • 1...Rxg6
        • 2.Sxc2#
      • 1...Se6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • S(f);N_GUARD::R1(H)
    • S(f);N_GUARD::R1(H),XS(f)
    • S(h);N_GUARD::S(G)
    • S(h);N_GUARD::S(G),XS(h)
    • S(h);N_GUARD,XB(E)::S(G)
  • Tries
    • Try
      • B(E);P_PINS(f)
      • Threat
        • R1(H)
      • Vars
        • S(h);N_GUARD,N_SPINS(f)::S(G)
      • Refutation
        • Q(a);P_PINR(H),XP(F)
    • Try
      • B(E);P_PINS(f)
      • Threat
        • R1(H)
      • Vars
        • S(h);N_GUARD,N_SPINS(f)::S(G)
      • Refutation
        • R(c);P_PINR(H),XP(F)
  • Actual
    • B(E);P_PINS(f)
    • Threat
      • R1(H)
    • Vars
      • Q(a);N_GUARD,P_PINR(H),XP(F)::B(A)+S(B)
      • R(c);N_GUARD,P_PINR(H),XP(F)::B(A)+S(B),XQ(a)
      • S(h);N_GUARD,N_SPINS(f)::S(G)
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