MESON Chess Problem Database

Problem Display
PID: 218853 (8/8/8/6n1/8/p2Q4/K2p2B1/3k4 w - - 0 1)

Kovalenko, Vitaly Semenovich

Uralski Problemist, 1996

8/8/8/6n1/8/p2Q4/K2p2B1/3k4

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qb1#
    • 1...Ke1
      • 2.Qf1#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Qf1#
      • 1...Kc1
        • 2.Qc2#
      • 1...Ke1
        • 2.Qf1#
      • 1...Sf3!
    • 1.Bf3+?
      • 1...Kc1
        • 2.Qb1#
        • 2.Qc4#
        • 2.Qc3#
      • 1...Ke1
        • 2.Qe2#
      • 1...Sxf3!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Qb1#
      • 1...Kc1
        • 2.Qb1#
      • 1...Ke1
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • S(d);
    • Try
      • B(B);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • S(d);XB(B)
  • Actual
    • B(B);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
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