MESON Chess Problem Database

Problem Display
PID: 167316 (8/5Q2/6p1/8/2K1k3/2n2R2/4n3/8 w - - 0 1)

Brozus, Hartmut

Der Tagesspiegel (Berlin), 1992

8/5Q2/6p1/8/2K1k3/2n2R2/4n3/8

#2

3 + 4

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qe7#
    • 1...Sc1
      • 2.Qf4#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sg3
      • 2.Qf4#
    • 1...Sd4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sb1
      • 2.Qd5#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sa2
      • 2.Qd5#
    • 1...Sa4
      • 2.Qd5#
    • 1...Sb5
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Kc5?
      • 1...Ke5
        • 2.Qe8#
        • 2.Qe7#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sc1
        • 2.Qf4#
      • 1...Sg1
        • 2.Qf4#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sb1
        • 2.Qd5#
      • 1...Sd1
        • 2.Qd5#
      • 1...Sa2
        • 2.Qd5#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...g5
        • 2.Qf5#
      • 1...Sa4+!
    • 1.Rf1?
      • threat
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Ke5
        • 2.Qe7#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd5
        • 2.Qe6#
      • 1...Ke3!
    • 1.Rf2?
      • threat
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qe7#
      • 1...Ke5
        • 2.Qe7#
      • 1...Sd4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd5
        • 2.Qe6#
      • 1...Ke3!
  • Keys
    • 1.Qb7+!
      • 1...Ke5
        • 2.Qe7#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • K(c);P-FLIGHT::QAR2(C)
    • S(a);N_GUARD::QAR1(C)
    • S(a);N_GUARD::QAR1(C),XS(a)
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • P(d);N_GUARD::QAB1(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
        • S(b);N_GUARD::QAB1(C)
        • S(b);N_GUARD::QAB1(C),XS(b)
        • P(d);N_GUARD::QAB1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
        • S(a);N_GUARD::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(b);::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
        • S(a);N_GUARD::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(b);::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(C);CHECK
    • Vars
      • K(c);P-FLIGHT::QAR2(C)
      • S(b);N_GUARD,P_SPINS(b)::QAB1(C),XS(b)
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