MESON Chess Problem Database

Problem Display
PID: 249864 (r1b5/1pKn4/p5Q1/1kp1r2R/2R5/8/1N6/4B3 w - - 0 1)

Binder, Friedrich

Schach-Aktiv, 1994

r1b5/1pKn4/p5Q1/1kp1r2R/2R5/8/1N6/4B3

#2

6 + 8

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sb8
      • 2.Qb6#
    • 1...Sf8
      • 2.Qb6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Ra5#
      • 1...Rxe1
        • 2.Qd3#
      • 1...b6
        • 2.Qc6#
      • 1...a5!
    • 1.Rb4+?
      • 1...Ka5
        • 2.Sc4#
      • 1...cxb4!
    • 1.Qc2?
      • threat
        • 2.Qb3#
        • 2.Qa4#
      • 1...Rxe1
        • 2.Qa4#
      • 1...Re3
        • 2.Qa4#
      • 1...Sb6
        • 2.Qb3#
      • 1...a5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qb3#
      • 1...Rxe1
        • 2.Ra4#
      • 1...a5
        • 2.Rb4#
      • 1...Re3
        • 2.Rcxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD::QAR1(E),XS(f)
    • S(f);N_GUARD::QAR1(E)
    • P(e);N_GUARD::QAB1(E)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • R(c);P_SPINP(b),XB(A)::QAB(E)
        • P(e);N_GUARD::QAB1(E)
      • Refutation
        • P(d);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,S_CUTP(b)::S(B)
      • Refutation
        • P(b);P_SPINR(c),XR(C)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);P_SPINP(b),XB(A)::QAB1(E)
        • R(c);P_SPINP(b)::QAB1(E)
        • S(f);::QAR2(E)
      • Refutation
        • P(d);
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • R(c);P_SPINP(b),XB(A)::QAB(E)+R(C)
      • P(d);SBLOCK::QAB(E)+R(C),DCHECK
      • R(c);P_SPINP(b)::QAB(E)+R(C),DCHECK,XP(b)
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