MESON Chess Problem Database

Problem Display
PID: 94966 (2K5/p7/3p4/Pk6/8/1BQ5/8/8 w - - 0 1)

Palkoska, Emil

British Chess Magazine 13. Ty., 1906-1907

2K5/p7/3p4/Pk6/8/1BQ5/8/8

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Bc4#
  • Tries
    • 1.Be6?
      • 1...Ka4
        • 2.Bd7#
      • 1...Ka6
        • 2.Bc4#
      • 1...a6
        • 2.Bd7#
      • 1...d5!
    • 1.Bf7?
      • 1...Ka4
        • 2.Be8#
      • 1...Ka6
        • 2.Bc4#
      • 1...a6
        • 2.Be8#
      • 1...d5!
    • 1.Qb4+?
      • 1...Ka6
        • 2.Bc4#
      • 1...Kc6
        • 2.Qc4#
      • 1...Kxb4!
  • Keys
    • 1.Bd5!
      • 1...Ka4
        • 2.Bc6#
      • 1...Ka6
        • 2.Bc4#
      • 1...a6
        • 2.Bc6#

This anticipates 160808(1987)

FEATURES

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