MESON Chess Problem Database

Problem Display
PID: 161754 (8/1n1k4/B1p2KQ1/B7/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/1n1k4/B1p2KQ1/B7/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.Qe8#
  • Tries
    • 1.Qf7+?
      • 1...Kc8
        • 2.Qe8#
        • 2.Qxb7#
        • 2.Qc7#
      • 1...Kd6!
    • 1.Qh7+?
      • 1...Kc8
        • 2.Qxb7#
        • 2.Qc7#
      • 1...Ke8
        • 2.Qe7#
        • 2.Qf7#
      • 1...Kd6!
    • 1.Qg4+?
      • 1...Kd6
        • 2.Qd4#
      • 1...Ke8!
    • 1.Qg7+?
      • 1...Kc8
        • 2.Qxb7#
        • 2.Qc7#
      • 1...Ke8
        • 2.Qe7#
        • 2.Qf7#
      • 1...Kd6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe6#
      • 1...Kd6
        • 2.Qd4#
      • 1...Kc8
        • 2.Qe8#
      • 1...Sxa5
        • 2.Qe7#
      • 1...Sc5
        • 2.Qe7#
      • 1...Sd8
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINS(b),S_FLIGHT::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(c);P-FLIGHT::QAR2(D)
      • K(c);P_SPINS(b),S_FLIGHT::QAR2(D)
      • S(b);XB(A)::QAR1(D)
      • S(b);::QAR1(D)
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