MESON Chess Problem Database

Problem Display
PID: 77469 (8/8/8/b1R5/rp5Q/k7/8/1K6 w - - 0 1)

Cyrulik, Stepan Pavlovich

Zvezda, 1981

8/8/8/b1R5/rp5Q/k7/8/1K6

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qg3#
      • 2.Qh3#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qa2#
        • 2.Qb2#
      • 1...Kb3
        • 2.Qe3#
        • 2.Qg3#
        • 2.Qb2#
        • 2.Qf3#
      • 1...b3!
    • 1.Qf6?
      • threat
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
        • 2.Qf3#
      • 1...b3!
    • 1.Qh2?
      • threat
        • 2.Qa2#
        • 2.Qb2#
      • 1...Kb3
        • 2.Qg3#
        • 2.Qb2#
        • 2.Qh3#
      • 1...b3!
    • 1.Qd4?
      • threat
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
        • 2.Qe3#
        • 2.Qd3#
      • 1...b3!
    • 1.Qh8?
      • threat
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
        • 2.Qh3#
      • 1...b3!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Rc3#
      • 1...Kb3
        • 2.Qe3#
      • 1...b3
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • R(C)
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • P(c);OGATEB,SBLOCK::QAB(B)+R(C),XB(d)
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Developed and maintained by Brian Stephenson.
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