MESON Chess Problem Database

Problem Display
PID: 213698 (K1N2n2/3k4/1B6/8/8/8/6Q1/3B4 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1977

K1N2n2/3k4/1B6/8/8/8/6Q1/3B4

#2

5 + 2

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc8
      • 2.Qc6#
      • 2.Qb7#
  • Tries
    • 1.Ba4+?
      • 1...Kxc8
        • 2.Qc6#
        • 2.Qb7#
        • 2.Qc2#
      • 1...Ke6!
    • 1.Qe4?
      • 1...Kxc8
        • 2.Qc6#
        • 2.Qb7#
        • 2.Qe8#
      • 1...Sg6
        • 2.Bg4#
      • 1...Sh7
        • 2.Bg4#
      • 1...Se6!
    • 1.Qd5+?
      • 1...Kxc8
        • 2.Qc6#
        • 2.Qb7#
        • 2.Qd8#
      • 1...Ke8!
    • 1.Qb7+?
      • 1...Ke8
        • 2.Sd6#
        • 2.Qe7#
      • 1...Ke6!
  • Keys
    • 1.Qg8!
      • 1...Kc6
        • 2.Ba4#
      • 1...Kxc8
        • 2.Bg4#
      • 1...Ke8
        • 2.Ba4#
      • 1...Se6
        • 2.Ba4#
      • 1...Sg6
        • 2.Ba4#
      • 1...Sh7
        • 2.Ba4#

Anticipated by 175105(1902)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(b);N_GUARD::B(A)
      • Refutation
        • S(b);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);P_SPINS(b),S_FLIGHT,XS(E)::B(A)
      • K(a);P_SPINS(b),S_FLIGHT::B(A)
      • S(b);::B(A)
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