MESON Chess Problem Database

Problem Display
PID: 173900 (7k/2K5/3pB3/5NN1/4p1p1/1Pp4p/P1PPP3/5Q2 w - - 0 1)

Sabol, Frantisek

3rd HM., Boletim da UBP, 1984-1985

7k/2K5/3pB3/5NN1/4p1p1/1Pp4p/P1PPP3/5Q2

#2

10 + 6

1077 Boletim da UBP 1988

SOLUTION

  • SOUND
  • Sets
    • 1...cxd2
      • 2.Qa1#
    • 1...g3
      • 2.Qxh3#
  • Tries
    • 1.Qh1?
      • 1...cxd2
        • 2.Qa1#
      • 1...h2
        • 2.Qxh2#
      • 1...e3
        • 2.Qa8#
      • 1...g3
        • 2.Qxh3#
      • 1...d5!
    • 1.Qf4?
      • 1...h2
        • 2.Qxh2#
      • 1...e3
        • 2.Qd4#
      • 1...g3
        • 2.Qh4#
      • 1...d5
        • 2.Qe5#
      • 1...cxd2!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qd4#
        • 2.Qh4#
      • 1...e3
        • 2.Qh4#
      • 1...g3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB,XP(D)::QAB(A)
    • P(d);N_GUARD::QAR(A),XP(b)
  • Tries
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • P(a);OGATEB,XP(D)::QAB(A)
        • P(b);OGATEB::QAR(A),XP(b)
        • P(c);OGATE::QAB1(A)
        • P(d);N_GUARD::QAR(A),XP(b)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • P(b);OGATEB::QAR(A),XP(b)
        • P(c);OGATE::QAB(A)
        • P(d);OGATE::QAR(A)
        • P(e);N_GUARD::QAB(A)
      • Refutation
        • P(a);XP(D)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(c);::QAR(A)
      • P(d);::QAB(A)
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