MESON Chess Problem Database

Problem Display
PID: 85758 (B7/6RK/8/8/2p5/8/bR4p1/7k w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1978

B7/6RK/8/8/2p5/8/bR4p1/7k

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rgxg2?
      • threat
        • 2.Rg3#
        • 2.Rg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
        • 2.Rg8#
      • 1...Bb1+
        • 2.Rxb1#
      • 1...c3!
  • Keys
    • 1.Rbxg2!
      • threat
        • 2.Rxa2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Bb1+
        • 2.Rc2#
      • 1...Bb3
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...c3
        • 2.Rxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);XP(c)
      • Threat
        • DUALS(6)
      • Vars
        • B(b);CHECK,N_GUARD::R(A),XB(b)
      • Refutation
        • P(d);
  • Actual
    • R(A);XP(c)
    • Threat
      • DUALS(6)
    • Vars
      • B(b);CHECK::B(D)+R(A)
      • P(d);::B(D)+R(A),XB(b)
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