MESON Chess Problem Database

Problem Display
PID: 173813 (2b4R/2k5/4R3/3B4/8/6K1/6Q1/8 w - - 0 1)

Borovik, Boris V

Prapor peremogi, 1987

2b4R/2k5/4R3/3B4/8/6K1/6Q1/8

#2

5 + 2

56 The Problemist 1988
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • 1...Kd7
        • 2.Qg7#
      • 1...Ba6
        • 2.Qg7#
      • 1...Bb7
        • 2.Qg7#
        • 2.Qxb7#
      • 1...Bd7
        • 2.Qe5#
        • 2.Qb6#
        • 2.Qb7#
        • 2.Qb8#
      • 1...Bxe6!
    • 1.Qc2+?
      • 1...Kd7
        • 2.Qh7#
        • 2.Qc6#
        • 2.Qxc8#
      • 1...Kb8!
    • 1.Qf2?
      • 1...Kd7
        • 2.Qf7#
      • 1...Kb8
        • 2.Qb6#
      • 1...Ba6
        • 2.Qf7#
      • 1...Bb7
        • 2.Qf7#
      • 1...Bd7
        • 2.Qb6#
        • 2.Qa7#
        • 2.Qf4#
      • 1...Bxe6!
  • Keys
    • 1.Ba8!
      • 1...Kd7
        • 2.Qc6#
      • 1...Kb8
        • 2.Qb7#
      • 1...Bxe6
        • 2.Qc6#
      • 1...Ba6
        • 2.Qc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Bd7
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • B(b);N_GUARD::QAR(A)
      • Refutation
        • B(b);XR(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);P_SPINB(b),S_FLIGHT::QAR2(A)
        • B(b);N_GUARD::QAR(A)
      • Refutation
        • B(b);XR(D)
  • Actual
    • B(C);
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P_SPINB(b),S_FLIGHT::QAR1(A)
      • B(b);XR(D)::QAR1(A)
      • B(b);::QAR1(A)
      • B(b);N_GUARD::QAR1(A),XB(b)
      • B(b);N_GUARD,SBLOCK::QAR1(A)
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