MESON Chess Problem Database

Problem Display
PID: 77368 (7B/6r1/3N3b/R7/1RNk4/K7/1Pb1P3/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 1994

7B/6r1/3N3b/R7/1RNk4/K7/1Pb1P3/8

#2

8 + 4

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Bxg7#
    • 1...Bd2
      • 2.Bxg7#
    • 1...Be3
      • 2.Sd2#
      • 2.Se5#
      • 2.Sb6#
      • 2.Bxg7#
  • Tries
    • 1.Sf5+?
      • 1...Ke4
        • 2.Sd2#
        • 2.Sce3#
        • 2.Sb6#
        • 2.Scd6#
      • 1...Bxf5!
    • 1.e3+?
      • 1...Bxe3
        • 2.Se5#
      • 1...Kd3!
  • Keys
    • 1.Re5!
      • threat
        • 2.Sb5#
      • 1...Rg3+
        • 2.Se3#
      • 1...Ra7+
        • 2.Sa5#
      • 1...Rb7
        • 2.Sb6#
      • 1...Ba4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD,P_PINP(A)::B(H),XR(d)
    • B(c);N_GUARD::B(H),XR(d)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(a);XS(G)
    • Try
      • P(B);CHECK
      • Vars
        • B(c);SBLOCK,XP(B)::R(D)+S(E)
      • Refutation
        • K(b);N_SPINR(d),P-FLIGHT
  • Actual
    • R(F);N_PINR(d)
    • Threat
      • S(G)
    • Vars
      • R(d);CHECK::R(D)+S(E)
      • R(d);::R(D)+S(E)
      • B(a);N_GUARD::S(G)
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