MESON Chess Problem Database

Problem Display
PID: 232375 (8/8/8/5B2/2R5/KR6/2b5/k7 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1979

8/8/8/5B2/2R5/KR6/2b5/k7

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Rxb1#
    • 1...Bd1
      • 2.Rb1#
      • 2.Rc1#
    • 1...Bxb3
      • 2.Rc1#
  • Tries
    • 1.Bd3?
      • 1...Bxb3
        • 2.Rc1#
      • 1...Bb1
        • 2.Rxb1#
      • 1...Bd1
        • 2.Rb1#
        • 2.Rc1#
      • 1...Bxd3!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Kb4#
      • 1...Bxb3
        • 2.Kxb3#
      • 1...Bb1
        • 2.Rxb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::R1(B),XB(b)
    • B(b);OGATE,XR(B)::R(C)
  • Tries
    • Try
      • B(D);
      • Vars
        • B(b);OGATE,XR(B)::R(C)
        • B(b);N_GUARD::R1(B),XB(b)
      • Refutation
        • B(b);XB(D)
  • Actual
    • R(C);
    • Threat
      • R(C)+K(A)
    • Vars
      • B(b);XR(B)::R(C)+K(A),XB(b)
      • B(b);N_GUARD::R1(B),XB(b)
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