MESON Chess Problem Database

Problem Display
PID: 82281 (2b4b/K1N4N/8/2R2B2/3Bnkrp/2p1pp2/5p1P/3n1Q2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Deutsche Schachblatter, 1985

2b4b/K1N4N/8/2R2B2/3Bnkrp/2p1pp2/5p1P/3n1Q2

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Sd5#
    • 1...Ba6
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bb7
      • 2.Se6#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qxg4#
      • 1...Bxf5
        • 2.Sd5#
      • 1...Rg1
        • 2.Sd5#
      • 1...Rg2
        • 2.Sd5#
      • 1...Rg3
        • 2.Sd5#
      • 1...Rg5
        • 2.Sd5#
      • 1...Rg6
        • 2.Sd5#
      • 1...Rg7
        • 2.Be5#
      • 1...Rg8
        • 2.Sd5#
      • 1...Sf6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxe4#
      • 1...Bxf5
        • 2.Sd5#
      • 1...Sxc5
        • 2.Sd5#
      • 1...Bb7
        • 2.Se6#
      • 1...Sd2
        • 2.Sd5#
      • 1...Sg3
        • 2.Sd5#
      • 1...Sg5
        • 2.Sd5#
      • 1...Sd6
        • 2.Sd5#
      • 1...Sf6
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(j);SBLOCK,XB(E)::S(G)
    • B(j);N_GUARD::S(G)
    • B(j);N_GUARD::S(G),XB(j)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XR(h)
      • Vars
        • B(j);SBLOCK,XB(E)::S(G)
        • R(h);::S(G)
        • R(h);P_PINS(G),S_CUTB(k)::B(C)
      • Refutation
        • S(f);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XS(f)
    • Vars
      • B(j);SBLOCK,XB(E)::S(G)
      • S(f);XR(D)::S(G)
      • B(j);N_GUARD::S(G)
      • S(f);::S(G)
      • S(f);S_CUTB(k)::B(C)
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