MESON Chess Problem Database

Problem Display
PID: 246023 (1R6/rPP5/k7/2K5/8/8/8/8 w - - 0 1)

Svitek, Miroslav

Kudesnik, 2010

1R6/rPP5/k7/2K5/8/8/8/8

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.bxa8Q#
      • 2.bxa8R#
  • Tries
    • 1.c8Q?
      • 1...Rxb7
        • 2.Ra8#
      • 1...Ra8
        • 2.Rxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Ka5!
    • 1.c8B?
      • 1...Rxb7
        • 2.Ra8#
      • 1...Ra8
        • 2.Rxa8#
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Ka5!
  • Keys
    • 1.Ra8!
      • 1...Ka5
        • 2.Rxa7#
      • 1...Kxb7
        • 2.c8Q#
      • 1...Rxa8
        • 2.bxa8Q#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::PXR(b)=Q
  • Tries
    • Try
      • P(C);
      • Vars
        • R(b);OGATEB,P_SPINR(b),XP(B)::R(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(C);
      • Vars
        • R(b);OGATEB,P_SPINR(b),XP(B)::R(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);P_PINR(b)
    • Vars
      • K(a);P-FLIGHT::R(D),XR(b)
      • K(a);N_SPINR(b),S_FLIGHT,XP(B)::P=Q
      • R(b);N_SPINR(b),OGATE,XR(D)::PXR(b)=Q
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