MESON Chess Problem Database

Problem Display
PID: 165107 (5B2/8/8/1pp2p1Q/k4p2/1N6/1K6/8 w - - 0 1)

Pozdnakov, G

Novi Temi, 1981

5B2/8/8/1pp2p1Q/k4p2/1N6/1K6/8

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qe8#
  • Tries
    • 1.Bxc5?
      • 1...b4
        • 2.Qe8#
      • 1...f3!
    • 1.Qd1?
      • 1...Kb4
        • 2.Qd4#
      • 1...b4
        • 2.Qd7#
      • 1...c4
        • 2.Qa1#
      • 1...f3!
    • 1.Qh6?
      • 1...Kb4
        • 2.Qxf4#
      • 1...b4
        • 2.Qa6#
        • 2.Qc6#
      • 1...c4
        • 2.Qa6#
      • 1...f3!
  • Keys
    • 1.Qf3!
      • 1...Kb4
        • 2.Qxf4#
      • 1...b4
        • 2.Qc6#
      • 1...c4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • B(D);XP(d)
      • Vars
        • P(c);OGATEB::QAB(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(d)::QAR2(C)
        • P(c);OGATEB,SBLOCK::QAB(C)
        • P(d);::QAR(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(d)::QAR(C),XP(b)
        • P(d);::QAR2(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(d)::QAR(C),XP(b)
      • P(c);OGATEB,SBLOCK::QAB(C)
      • P(d);::QAR(C)
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