MESON Chess Problem Database

Problem Display
PID: 11839 (4k3/5n1R/2N1b3/2K5/8/8/8/Q7 w - - 0 1)

Kakovin, Aleksandr Sergeyevich

Problemas, 1972

4k3/5n1R/2N1b3/2K5/8/8/8/Q7

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Tries
    • 1.Rh8+?
      • 1...Kd7
        • 2.Qa7#
      • 1...Sxh8!
    • 1.Qh8+?
      • 1...Kd7
        • 2.Qd8#
      • 1...Sxh8!
    • 1.Qa8+?
      • 1...Kd7
        • 2.Qd8#
      • 1...Sd8
        • 2.Qxd8#
      • 1...Bc8!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qe7#
      • 1...Kd7
        • 2.Qd8#
      • 1...Kf8
        • 2.Rh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(A)
      • Refutation
        • S(b);XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,P_SPINS(b),S_FLIGHT::QAR1(A)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR1(A)
        • S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::QAR1(A)
      • K(c);P-FLIGHT,P_SPINS(b)::R(D)
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