MESON Chess Problem Database

Problem Display
PID: 225350 (8/3p4/8/1K1kp3/3p2B1/7Q/8/8 w - - 0 1)

Dukic, Milenko

Praca, 1995

8/3p4/8/1K1kp3/3p2B1/7Q/8/8

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf3#
    • 1...d3
      • 2.Qxd3#
  • Tries
    • 1.Qb3+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6!
    • 1.Qc3?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qc5#
      • 1...e4
        • 2.Qc5#
      • 1...d3
        • 2.Qxd3#
      • 1...d6
        • 2.Qc6#
      • 1...dxc3!
    • 1.Qh7?
      • 1...Kd6
        • 2.Qxd7#
      • 1...d3
        • 2.Qxd3#
      • 1...d6
        • 2.Qb7#
      • 1...e4!
  • Keys
    • 1.Qa3!
      • 1...Ke4
        • 2.Qf3#
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qc5#
      • 1...d6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(A)
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);P-FLIGHT::QAB1(A)
        • P(c);SBLOCK::QAR1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(d);N_GUARD::QAB1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(d)
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(d);OGATE,SBLOCK::QAB(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);SBLOCK::QAR1(A)
      • P(d);SBLOCK::QAB(A)
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