MESON Chess Problem Database

Problem Display
PID: 23356 (rk1N4/3PK3/ppRn4/5p2/5B2/8/8/8 w - - 0 1)

Knotek, Ladislav

1st HM., Ruch, 1948

rk1N4/3PK3/ppRn4/5p2/5B2/8/8/8

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rc8#
  • Tries
    • 1.Rxb6+?
      • 1...Kc7
        • 2.Rb7#
      • 1...Ka7!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rb7#
      • 1...Sc8+
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Kxc7
        • 2.Bxd6#
      • 1...Ra7
        • 2.Rc8#
      • 1...Sb7
        • 2.Sc6#
        • 2.Rxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);P_PINP(C),SBLOCK::R1(B)
  • Tries
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • K(f);S_FLIGHT::R1(B)
      • Refutation
        • K(f);N_SPINS(d),S_FLIGHT
  • Actual
    • R(B);N_PINS(d)
    • Threat
      • R1(B)
    • Vars
      • S(d);CHECK,OGATE::PXS(d)=Q
      • K(f);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::B(A),XS(d)
      • R(e);SBLOCK::R1(B)
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