MESON Chess Problem Database

Problem Display
PID: 162812 (1B5b/2Rn3N/8/1rp2P2/2N2kp1/2P3p1/2B1R1K1/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 2016

1B5b/2Rn3N/8/1rp2P2/2N2kp1/2P3p1/2B1R1K1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Rg7#
    • 1...Sf6
      • 2.Rb7#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sd5#
      • 1...Sxb6
        • 2.Rg7#
      • 1...Sf6
        • 2.Rxc5#
        • 2.Rc6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rd7#
        • 2.Rce7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rc8#
      • 1...c4
        • 2.Rxc4#
      • 1...Rxb6!
    • 1.Rxd7+?
      • 1...Be5
        • 2.Bxe5#
      • 1...Rxb8!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd5#
      • 1...Ke5
        • 2.Rxc5#
      • 1...Sb6
        • 2.Rg7#
      • 1...Sf6
        • 2.Rb7#
      • 1...c4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE::B(I)+R(G)
    • S(f);N_GUARD,S_CUTB(g)::B(I)+R(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(f);OGATE,XS(E)::B(I)+R(G)
        • P(e);OGATE::B(I)+R(G),DCHECK,XP(e)
      • Refutation
        • R(d);XS(E)
    • Try
      • R(G);CHECK,XS(f)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::B(I),XB(g)
      • Refutation
        • R(d);XB(I)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);S_FLIGHT::B(I)+R(G),DCHECK,XP(e)
      • S(f);OGATE::B(I)+R(G)
      • S(f);N_GUARD,S_CUTB(g)::B(I)+R(G)
      • P(e);OGATE::B(I)+R(G),DCHECK,XP(e)
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