MESON Chess Problem Database

Problem Display
PID: 85831 (8/8/6R1/7K/b3B3/3p4/3R2p1/7k w - - 0 1)

Speckmann, Werner

Schach, 1988

8/8/6R1/7K/b3B3/3p4/3R2p1/7k

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rdxg2?
      • threat
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Bd1+
        • 2.Re2#
      • 1...Bc2
        • 2.Rxc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...d2
        • 2.Rxd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Bc6!
  • Keys
    • 1.Rgxg2!
      • threat
        • 2.Rg3#
        • 2.Rg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
        • 2.Rg8#
      • 1...Bd1+
        • 2.Rxd1#
      • 1...Be8+
        • 2.Rg6#
      • 1...Bc6
        • 2.Rd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);XP(b)
      • Threat
        • DUALS(6)
      • Vars
        • B(d);CHECK::B(B)+R(A)
      • Refutation
        • B(d);
  • Actual
    • R(D);XP(b)
    • Threat
      • DUALS(6)
    • Vars
      • B(d);CHECK,N_GUARD::R(A),XB(d)
      • B(d);CHECK::B(B)+R(D)
      • B(d);N_GUARD::R(A)
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