MESON Chess Problem Database

Problem Display
PID: 173814 (6K1/3pk3/2B1N1R1/8/8/8/4Q3/8 w - - 0 1)

Borovik, Boris V

Probleemblad, 1988

6K1/3pk3/2B1N1R1/8/8/8/4Q3/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qxd7#
      • 1...dxc6
        • 2.Qd8#
      • 1...dxe6
        • 2.Qd7#
      • 1...d5
        • 2.Qa3#
      • 1...d6!
    • 1.Qf2?
      • threat
        • 2.Qf8#
      • 1...Kd6
        • 2.Qc5#
      • 1...Ke8
        • 2.Qf7#
        • 2.Qf8#
      • 1...dxc6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qxd7#
      • 1...Ke8
        • 2.Qxd7#
      • 1...dxc6
        • 2.Qd8#
      • 1...dxe6
        • 2.Qd7#
      • 1...d6
        • 2.Qg5#
      • 1...d5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAB1(A),XP(a)
        • P(a);OGATE,XB(B)::QAB1(A)
        • P(a);XS(C)::QAR1(A)
        • P(a);N_GUARD::QAB(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);XB(B)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(A),XP(a)
      • P(a);OGATE,XB(B)::QAB1(A)
      • P(a);XS(C)::QAR1(A)
      • P(a);SBLOCK::QAB(A)
      • P(a);N_GUARD::QAB(A)
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