MESON Chess Problem Database

Problem Display
PID: 276719 (5K2/7p/4p3/6kP/8/5QB1/8/8 w - - 0 1)

Sikdar, Niharendu

Seven is the Limit, 1989

5K2/7p/4p3/6kP/8/5QB1/8/8

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2024
3713 Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Bf4#
  • Tries
    • 1.Bd6?
      • 1...Kh4
        • 2.Be7#
      • 1...Kh6
        • 2.Bf4#
      • 1...h6
        • 2.Be7#
      • 1...e5!
    • 1.Bc7?
      • 1...Kh4
        • 2.Bd8#
      • 1...Kh6
        • 2.Bf4#
      • 1...h6
        • 2.Bd8#
      • 1...e5!
    • 1.Qg4+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kh6
        • 2.Bf4#
      • 1...Kxg4!
  • Keys
    • 1.Be5!
      • 1...Kh4
        • 2.Bf6#
      • 1...Kh6
        • 2.Bf4#
      • 1...h6
        • 2.Bf6#

Anticipated by 94966(1906-1907)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(B)
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
        • P(c);SBLOCK::B(B)
      • Refutation
        • P(b);
    • Try
      • B(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(B)
        • P(c);SBLOCK::B(B)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(A)
        • K(a);N_GUARD,S_FLIGHT::B(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(B)
      • P(c);SBLOCK::B(B)
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