MESON Chess Problem Database

Problem Display
PID: 259223 (4K3/8/B3p3/4P3/3Pk3/4N2P/3Q4/8 w - - 0 1)

Butirski, V

64 Shakhmatnoe obozrenie, 2022

4K3/8/B3p3/4P3/3Pk3/4N2P/3Q4/8

#2

7 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1?
      • 1...Kf3
        • 2.Bb7#
      • 1...Kf5
        • 2.Bd3#
      • 1...Kd5!
    • 1.Sc2?
      • 1...Kd5
        • 2.Qg2#
      • 1...Kf5
        • 2.Bd3#
      • 1...Kf3!
  • Keys
    • 1.Sf5!
      • 1...Kf3
        • 2.Bb7#
      • 1...Kd5
        • 2.Qg2#
      • 1...Kxf5
        • 2.Bd3#
      • 1...exf5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(A)
        • K(a);N_GUARD,S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(F)
      • K(a);N_GUARD,S_FLIGHT::QAB(A)
      • K(a);N_GUARD,S_FLIGHT,XS(B)::B(F)
      • P(b);SBLOCK,XS(B)::B(F)
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