MESON Chess Problem Database

Problem Display
PID: 218168 (RB6/2R5/8/8/8/8/1p3K2/1b5k w - - 0 1)

Ostwald, Ralph

Deutsche Schachzeitung, 1984

RB6/2R5/8/8/8/8/1p3K2/1b5k

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh2
      • 2.Rh7#
    • 1...Ba2
      • 2.Rh7#
    • 1...Bh7
      • 2.Rxh7#
  • Keys
    • 1.Ra1!
      • threat
        • 2.Rh7#
      • 1...Kh2
        • 2.Rh7#
      • 1...bxa1Q
        • 2.Rc1#
      • 1...bxa1S
        • 2.Rc1#
      • 1...bxa1B
        • 2.Rc1#
      • 1...bxa1R
        • 2.Rc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(b);P-FLIGHT::B(D)+R(B),DCHECK
    • B(a);N_GUARD::R(B)
    • B(a);N_GUARD::R(B),XB(a)
  • Actual
    • R(C);P_PINB(a)
    • Threat
      • R(B)
    • Vars
      • K(b);N_SPINB(a),P-FLIGHT::B(D)+R(B),DCHECK
      • P(c);N_GUARD,N_SPINB(a),SBLOCK,XR(C)::R(B)
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