MESON Chess Problem Database

Problem Display
PID: 278260 (3B4/8/3P4/3NkP2/8/3Q1K2/8/8 w - - 0 1)

Nikitin, V?

Phenix, 2009

3B4/8/3P4/3NkP2/8/3Q1K2/8/8

#2

6 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Qc4?
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kxd6!
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Qf6#
        • 2.Qe4#
      • 1...Kxd6
        • 2.Sb4#
        • 2.Se7#
      • 1...Kxd4!
  • Keys
    • 1.Qb5!
      • 1...Kd4
        • 2.Bf6#
      • 1...Kxf5
        • 2.Sf4#
      • 1...Kxd6
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(D)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(F)
      • K(a);N_GUARD,P-FLIGHT,XP(D)::QAR(A)+S(C)
      • K(a);OGATEB,S_FLIGHT,XP(E)::B(F)
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