MESON Chess Problem Database

Problem Display
PID: 183450 (nrb1B3/3P3Q/nk6/1p2K3/Pr1R4/N7/8/R5B1 w - - 0 1)

Mlynka, Karol

2nd Comm., Sachova skladba, 2013

nrb1B3/3P3Q/nk6/1p2K3/Pr1R4/N7/8/R5B1

#2

9 + 7

56 The Problemist 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Rc4#
    • 1...Ka7
      • 2.dxc8S#
    • 1...Kc7
      • 2.d8Q#
      • 2.d8B#
  • Tries
    • 1.Rd6+?
      • 1...Kb7
        • 2.d8S#
      • 1...Kc7
        • 2.d8Q#
        • 2.d8B#
      • 1...Ka5!
  • Keys
    • 1.a5+!
      • 1...Kxa5
        • 2.Sc4#
      • 1...Kc5
        • 2.Rc4#
      • 1...Kc6
        • 2.dxc8Q#
        • 2.dxc8R#
      • 1...Ka7
        • 2.dxc8S#
      • 1...Kb7
        • 2.d8S#
      • 1...Kc7
        • 2.d8Q#
        • 2.d8B#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::B(B)+R(E),DCHECK
    • K(d);S_FLIGHT::PXB(g)=S
    • K(d);S_FLIGHT::P=Q
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT::P=S
        • K(d);S_FLIGHT::P=Q
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • P(D);CHECK
    • Vars
      • K(d);S_FLIGHT,XP(D)::R(A)+S(C),DCHECK
      • K(d);S_FLIGHT::B(B)+R(E),DCHECK
      • K(d);P-FLIGHT::PXB(g)=Q
      • K(d);S_FLIGHT::PXB(g)=S
      • K(d);P-FLIGHT::P=S
      • K(d);S_FLIGHT::P=Q
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