MESON Chess Problem Database

Problem Display
PID: 82277 (1b6/rB2B1Kn/pR2N1p1/N1p1k1p1/2p1P3/8/b3QRn1/q7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Aktiv, 1985

1b6/rB2B1Kn/pR2N1p1/N1p1k1p1/2p1P3/8/b3QRn1/q7

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sxc4#
    • 1...Sf6
      • 2.Bxf6#
    • 1...Sf8
      • 2.Bf6#
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Sc6#
      • 1...Sxg5
        • 2.Bf6#
      • 1...Kd4!
    • 1.Qxc4?
      • threat
        • 2.Sc6#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Qd4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Sc6#
      • 1...Sxf6
        • 2.Bxf6#
      • 1...Se3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::S(D),XP(d)
    • S(k);N_GUARD::B(H),XS(k)
    • S(k);N_GUARD::B(H)
  • Tries
    • Try
      • S(F);XP(g)
      • Threat
        • S(D)
      • Vars
        • S(k);N_GUARD,XS(F)::B(H)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);XP(d)
      • Threat
        • S(D)
      • Vars
        • B(b);XQ(A)::S(D),XB(b)
      • Refutation
        • Q(a);
  • Actual
    • R(B);
    • Threat
      • S(D)
    • Vars
      • S(k);OGATE,XR(B)::B(H),XS(k)
      • S(c);OGATE::QAB(A)
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