MESON Chess Problem Database

Problem Display
PID: 7561 (6bb/8/5R2/7r/1Rp5/2kN3p/1N6/3K2Q1 w - - 0 1)

Chlubna, Friedrich

8th HM., Probleemblad, 1991

6bb/8/5R2/7r/1Rp5/2kN3p/1N6/3K2Q1

#2

6 + 6

5395 Schach fur Nussknacker 1994
4654 64 + 100 1996
4827 FIDE Album (1989-1991) 1997
56 The Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qd4#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Sa4#
      • 1...cxd3
        • 2.Qe1#
      • 1...Ra5!
    • 1.Qe3?
      • threat
        • 2.Sa4#
      • 1...cxd3
        • 2.Qd2#
        • 2.Qd4#
      • 1...Ra5!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Qe1#
      • 1...cxd3
        • 2.Sa4#
      • 1...Re5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);XS(D)::QAB1(B)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(C)
      • Vars
        • P(c);P_SPINP(c),XS(D)::QAB(B)
      • Refutation
        • R(d);
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Refutation
        • R(d);
  • Actual
    • R(F);
    • Threat
      • QAB(B)
    • Vars
      • P(c);SBLOCK,XS(D)::S(C)
      • R(d);S_CUTB(f)::QAB1(B)
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