MESON Chess Problem Database

Problem Display
PID: 275655 (8/8/B3pQ2/2P5/4k2K/6P1/8/8 w - - 0 1)

Bantysh, Nikolai Ivanovich

Phenix, 2001

8/8/B3pQ2/2P5/4k2K/6P1/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf4#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qf4#
      • 1...Ke3
        • 2.Qf4#
      • 1...e5!
    • 1.Qe5+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxe5!
    • 1.Qxe6+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd4!
  • Keys
    • 1.Qc3!
      • 1...Kd5
        • 2.Bb7#
      • 1...Kf5
        • 2.Bd3#
      • 1...e5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,P-FLIGHT::QAB1(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(D)
      • P(b);SBLOCK::QAB1(E)
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