MESON Chess Problem Database

Problem Display
PID: 273102 (3KQ3/8/1pN2p2/1k3B2/1B6/8/4P3/8 w - - 0 1)

Stolyarov, Vitaly Nesterovich

Mat, 1980

3KQ3/8/1pN2p2/1k3B2/1B6/8/4P3/8

#2

6 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Sb8#
      • 1...Ka4!
    • 1.Qe5+?
      • 1...Ka4
        • 2.Bc2#
      • 1...Kc4
        • 2.Be6#
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc6
        • 2.Be4#
      • 1...fxe5!
  • Keys
    • 1.Qh5!
      • 1...Ka4
        • 2.Bc2#
      • 1...Kc4
        • 2.Be6#
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);N_GUARD,S_CUTP(c),S_FLIGHT::B(C)
        • K(a);N_GUARD,S_CUTP(c),S_FLIGHT,XS(D)::B(C)
      • Refutation
        • P(c);XQ(F)
  • Actual
    • Q(F);
    • Vars
      • K(a);N_GUARD,S_CUTP(c),S_FLIGHT::B(C)
      • K(a);N_GUARD,S_CUTP(c),S_FLIGHT,XS(D)::B(C)
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