MESON Chess Problem Database

Problem Display
PID: 234547 (1R6/6pB/8/2N5/8/n3p3/4K2R/2k3N1 w - - 0 1)

Speckmann, Werner

Europe Echecs, 1969

1R6/6pB/8/2N5/8/n3p3/4K2R/2k3N1

#2

6 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rxb1#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sc4
      • 2.Rb1#
  • Tries
    • 1.Bg6?
      • 1...Sc2
        • 2.Sd3#
      • 1...Sb1
        • 2.Rxb1#
      • 1...Sc4
        • 2.Rb1#
      • 1...Sb5!
  • Keys
    • 1.Ke1!
      • threat
        • 2.Se2#
        • 2.Sb3#
        • 2.Sd3#
      • 1...Sc2+
        • 2.Rxc2#
      • 1...Sb5
        • 2.Sb3#
      • 1...e2
        • 2.Sxe2#
      • 1...g6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::R1(F),XS(b)
    • S(b);SBLOCK::S(D)
    • S(b);N_GUARD::R1(F)
  • Tries
    • Try
      • B(E);
      • Vars
        • S(b);SBLOCK::S(D)
        • S(b);N_GUARD::R1(F),XS(b)
        • S(b);N_GUARD::R1(F)
      • Refutation
        • S(b);
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • S(b);CHECK,N_GUARD::R1(C),XS(b)
      • S(b);::S(D)
      • P(c);::S(A),XP(c)
      • P(d);::S(D)
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