MESON Chess Problem Database

Problem Display
PID: 262875 (8/1Qp5/3k2K1/3B2B1/8/8/8/R7 w - - 0 1)

Bantysh, Nikolai Ivanovich

Zadachi i Etyudi, 2008

8/1Qp5/3k2K1/3B2B1/8/8/8/R7

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Bf4#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kd7
        • 2.Rd1#
      • 1...c5
        • 2.Bf4#
      • 1...c6
        • 2.Qe7#
      • 1...Kc5!
  • Keys
    • 1.Rd1!
      • 1...Kc5
        • 2.Be7#
      • 1...Ke5
        • 2.Qxc7#
      • 1...Kd7
        • 2.Bf7#
      • 1...c5
        • 2.Bf4#
        • 2.Qe7#
      • 1...c6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::B(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::R(A)
        • P(b);SBLOCK::B(C)
        • P(b);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(C)
      • K(a);N_GUARD,S_FLIGHT::QAB(E),XP(b)
      • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::R(A)+B(B)
      • P(b);OGATE::QAB1(E)
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