MESON Chess Problem Database

Problem Display
PID: 91454 (8/8/8/4K3/B3R3/5N2/3P2k1/4B3 w - - 0 1)

Strzala, Kazimierz

Probleemblad, 1984

8/8/8/4K3/B3R3/5N2/3P2k1/4B3

#2

6 + 1

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Re2+?
      • 1...Kf1
        • 2.Rf2#
      • 1...Kh1
        • 2.Rh2#
      • 1...Kh3
        • 2.Bd7#
      • 1...Kxf3!
  • Keys
    • 1.Rg4+!
      • 1...Kf1
        • 2.Bb5#
      • 1...Kh1
        • 2.Rg1#
      • 1...Kxf3
        • 2.Bd1#
      • 1...Kh3
        • 2.Rg3#

This anticipates 46444(2002), 244511(2013)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
        • K(a);OGATE,S_FLIGHT::R1(E)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • R(E);CHECK
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);OGATE,S_FLIGHT::R1(E)
      • K(a);S_FLIGHT,XS(C)::B(D)
      • K(a);S_FLIGHT::R1(E)
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