MESON Chess Problem Database

Problem Display
PID: 164026 (B5QK/1r3p2/1b6/4B3/4N2p/5N1k/2n5/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1997

(First published on Thu Jan 30 1997)

B5QK/1r3p2/1b6/4B3/4N2p/5N1k/2n5/8

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sxg1#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Ba5
      • 2.Sg1#
      • 2.Sf2#
    • 1...Bc7
      • 2.Sg1#
      • 2.Sf2#
    • 1...Bd8
      • 2.Sg1#
      • 2.Sf2#
    • 1...Se3
      • 2.Sg1#
      • 2.Sf2#
    • 1...Sd4
      • 2.Sg1#
      • 2.Sf2#
  • Tries
    • 1.Sh2?
      • threat
        • 2.Qg4#
      • 1...Rb8
        • 2.Sg5#
      • 1...Se3
        • 2.Sf2#
      • 1...f5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qg4#
      • 1...Rb8
        • 2.Sg5#
      • 1...Se3
        • 2.Sg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::S(A),XB(d)
    • B(d);N_GUARD::S(B),XB(d)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(E)
      • Vars
        • R(e);P_PINQ(E)::S(B)
        • S(a);S_CUTB(d)::S(B)
      • Refutation
        • P(f);
  • Actual
    • S(B);
    • Threat
      • QAB1(E)
    • Vars
      • R(e);P_PINQ(E)::S(A)
      • S(a);S_CUTB(d)::S(A)
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