MESON Chess Problem Database

Problem Display
PID: 77496 (7Q/8/8/2K1B3/8/1p6/k7/8 w - - 0 1)

Cyrulik, Stepan Pavlovich

Problemist Pribuzhya, 1992

7Q/8/8/2K1B3/8/1p6/k7/8

#2

3 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa8#
  • Tries
    • 1.Qh1?
      • threat
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa8#
        • 2.Qa1#
      • 1...b2!
    • 1.Qh2+?
      • 1...Kb1
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Ka3!
    • 1.Qh7?
      • 1...Ka3
        • 2.Qa7#
      • 1...b2!
    • 1.Qb8?
      • 1...Ka3
        • 2.Qa7#
        • 2.Qa8#
      • 1...b2
        • 2.Qxb2#
      • 1...Kb1!
    • 1.Qg8?
      • 1...Ka3
        • 2.Qa8#
      • 1...Kb1!
  • Keys
    • 1.Ba1!
      • threat
        • 2.Qb2#
      • 1...Kb1
        • 2.Qb2#
      • 1...Ka3
        • 2.Qa8#
      • 1...b2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • P(b);P_SPINP(b)::QAR1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Vars
        • P(b);OGATE::QAR1(C),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(C);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR(C)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);P-FLIGHT::QAR(C)
      • P(b);::QAR1(C),XP(b)
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