MESON Chess Problem Database

Problem Display
PID: 249393 (k7/2K5/8/8/8/4q3/8/4R3 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1975

k7/2K5/8/8/8/4q3/8/4R3

#2

2 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1+?
      • 1...Qa3
        • 2.Rxa3#
      • 1...Qa7+!
  • Keys
    • 1.Rxe3!
      • 1...Ka7
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::R(A),XQ(a)
      • Refutation
        • Q(a);CHECK,P_SPINQ(a)
  • Actual
    • R(A);XQ(a)
    • Vars
      • K(b);P-FLIGHT::R(A)
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