MESON Chess Problem Database

Problem Display
PID: 164039 (8/8/3K4/1PP5/Qpk5/8/1P6/1B6 w - - 0 1)

Dubina, A

Sachmatija, 2006

8/8/3K4/1PP5/Qpk5/8/1P6/1B6

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kxb5!
    • 1.Qa1?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kxb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
    • 1.Qa2+?
      • 1...Kxb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
    • 1.Qa3?
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#
      • 1...bxa3!
    • 1.Qa5?
      • 1...Kb3
        • 2.Qa2#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
    • 1.Qa6?
      • 1...Kb3
        • 2.Qa2#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
    • 1.Qa7?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kxb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#
      • 1...Kd4!
  • Keys
    • 1.Qa8!
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxb5
        • 2.Bd3#
      • 1...b3
        • 2.Qa4#

This is a version of 163294

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Refutation
        • K(b);S_FLIGHT,XP(D)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT,XP(D)::B(A)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Vars
        • K(b);S_FLIGHT,XP(D)::B(A)
        • P(a);OGATEB,P_SPINP(a)::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);S_FLIGHT,XP(D)::B(A)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • P(a);XQ(C)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT,XP(D)::B(A)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT,XP(D)::B(A)
      • P(a);OGATEB::QAR2(C)
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