MESON Chess Problem Database

Problem Display
PID: 171454 (8/8/8/P7/Q1B1kpNK/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

8/8/8/P7/Q1B1kpNK/8/8/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qc6#
    • 1...Kf5
      • 2.Qc2#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qd3#
        • 2.Qd5#
      • 1...Kf5
        • 2.Qc2#
        • 2.Qb1#
        • 2.Qd3#
      • 1...f3!
    • 1.Qc2+?
      • 1...Kf3
        • 2.Bd5#
        • 2.Qe2#
      • 1...Kd4!
    • 1.Qb5?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Bd5#
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#
      • 1...f3
        • 2.Qe5#
      • 1...Kd4!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Bd3#
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qd7?
      • threat
        • 2.Qd3#
        • 2.Qd5#
      • 1...Kf3
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#
      • 1...f3!
    • 1.Qe8+?
      • 1...Kf3
        • 2.Bd5#
        • 2.Qc6#
        • 2.Qe2#
        • 2.Qa8#
      • 1...Kf5
        • 2.Bd3#
        • 2.Qe6#
      • 1...Kd4!
  • Keys
    • 1.Qa1!
      • 1...Kf3
        • 2.Qh1#
      • 1...Kf5
        • 2.Qb1#
      • 1...f3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB(A)
      • P(b);SBLOCK::QAR1(A)
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