MESON Chess Problem Database

Problem Display
PID: 234228 (4B3/2p1K2p/4n2r/4Nkp1/4p1p1/1pQ3B1/2n5/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Stern, 1990

4B3/2p1K2p/4n2r/4Nkp1/4p1p1/1pQ3B1/2n5/8

#2

5 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qd3#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qe5#
      • 1...Sed4
        • 2.Qc5#
      • 1...Scd4!
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Scd4
        • 2.Se3#
      • 1...Sed4!
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Sed4
        • 2.Qc5#
      • 1...Scd4!
    • 1.Sg6?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...Rxg6
        • 2.Qe5#
      • 1...e3
        • 2.Qe5#
        • 2.Qd3#
      • 1...Sed4
        • 2.Qc5#
      • 1...Scd4!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...Sed4
        • 2.Qc5#
      • 1...Scd4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sxh6#
      • 1...Kg6
        • 2.Sd6#
      • 1...e3
        • 2.Qd3#
      • 1...Rh1
        • 2.Qf6#
      • 1...Rh2
        • 2.Qf6#
      • 1...Rh3
        • 2.Qf6#
      • 1...Rh4
        • 2.Qf6#
      • 1...Rh5
        • 2.Qf6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Rg6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(g);N_GUARD::QAR(A)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::S(C)
      • Refutation
        • S(g);
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(g);N_GUARD::QAR(A)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XS(C)::QAR1(A)
        • S(g);N_GUARD::QAR(A)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(g);N_GUARD::QAR(A)
      • Refutation
        • S(a);
  • Actual
    • S(C);
    • Threat
      • S(C),XR(h)
    • Vars
      • K(e);S_FLIGHT::B(E)+S(C)
      • P(c);OGATEB::QAB(A)
      • R(h);N_GUARD::QAR1(A)
      • R(h);N_GUARD::QAR1(A),XR(h)
      • R(h);SBLOCK::QAR1(A)
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