MESON Chess Problem Database

Problem Display
PID: 146859 (6b1/2pQ2Bn/n5p1/KPk1N3/1p5r/Pp6/8/Nq3Bb1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 2012

6b1/2pQ2Bn/n5p1/KPk1N3/1p5r/Pp6/8/Nq3Bb1

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qc6#
    • 1...Bd4
      • 2.Qc6#
    • 1...Sg5
      • 2.Bf8#
    • 1...Sf6
      • 2.Bf8#
    • 1...Sf8
      • 2.Bxf8#
  • Tries
    • 1.Sd3+?
      • 1...Qxd3
        • 2.Qc6#
      • 1...Kc4!
    • 1.Sg4?
      • threat
        • 2.Qc6#
      • 1...Bd5
        • 2.Qe7#
      • 1...Sb8
        • 2.axb4#
      • 1...Sf6
        • 2.Bf8#
      • 1...c6
        • 2.Qxc6#
      • 1...Qe4!
    • 1.Sf7?
      • threat
        • 2.Qc6#
      • 1...Qe4
        • 2.Sxb3#
      • 1...Sf6
        • 2.Bf8#
      • 1...c6
        • 2.Qxc6#
        • 2.Qd6#
      • 1...Sb8!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qc6#
      • 1...Qe4
        • 2.Sxb3#
      • 1...Bd5
        • 2.Qe7#
      • 1...Sb8
        • 2.axb4#
      • 1...Sf6
        • 2.Bf8#
      • 1...c6
        • 2.Qxc6#
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(e);SBLOCK::QAR1(G)
    • B(b);SBLOCK::QAR1(G)
    • S(j);N_GUARD::B(H)
    • S(j);N_GUARD::B(H),XS(j)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(a);XS(F)::QAR1(G)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • S(F);
      • Threat
        • QAR1(G)
      • Vars
        • B(k);SBLOCK::QAB(G)
        • S(g);N_GUARD::P(C),XP(d)
        • S(j);N_GUARD::B(H)
        • P(i);::QAR1(G),XP(i)
      • Refutation
        • Q(a);
    • Try
      • S(F);
      • Threat
        • QAR1(G)
      • Vars
        • Q(a);N_GUARD::S(A),XP(c)
        • S(j);N_GUARD::B(H)
      • Refutation
        • S(g);
  • Actual
    • S(F);
    • Threat
      • QAR1(G)
    • Vars
      • Q(a);N_GUARD::S(A),XP(c)
      • B(k);SBLOCK::QAB(G)
      • S(g);N_GUARD::P(C),XP(d)
      • S(j);N_GUARD::B(H)
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