MESON Chess Problem Database

Problem Display
PID: 151150 (1R6/6B1/B7/2P5/3p1R2/8/2k5/4K3 w - - 0 1)

Ahlheim, Karl-Heinz

Die Schwalbe, 1970

1R6/6B1/B7/2P5/3p1R2/8/2k5/4K3

#2

6 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Rc4#
  • Tries
    • 1.Bh6?
      • 1...Kc1
        • 2.Rf2#
      • 1...d3
        • 2.Rc4#
      • 1...Kc3!
    • 1.Rf2+?
      • 1...Kc1
        • 2.Bh6#
      • 1...Kc3!
  • Keys
    • 1.Rxd4!
      • 1...Kc1
        • 2.Rc4#
      • 1...Kc3
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE,SBLOCK::R(B)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);P-FLIGHT::B(E)+R(B)
        • P(b);OGATE,SBLOCK::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(E)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • R(B);XP(b)
    • Vars
      • K(a);P-FLIGHT::R(B)
      • K(a);P-FLIGHT::B(E)+R(B)
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