MESON Chess Problem Database

Problem Display
PID: 82132 (4KNB1/bp4Q1/3BR3/R2PN2p/3k3r/5P2/n2P4/1r6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Deutsche Schachblatter, 1969

4KNB1/bp4Q1/3BR3/R2PN2p/3k3r/5P2/n2P4/1r6

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxg1#
    • 1...Rb2
      • 2.Qg1#
    • 1...Rb4
      • 2.Qg1#
    • 1...Rb6
      • 2.Qg1#
    • 1...Sc1
      • 2.Qg1#
  • Tries
    • 1.Bc5+?
      • 1...Kxd5
        • 2.Rea6#
        • 2.Rb6#
        • 2.Rc6#
        • 2.Rd6#
        • 2.Rg6#
        • 2.Rh6#
        • 2.Re7#
        • 2.Qd7#
      • 1...Bxc5!
    • 1.Rf6?
      • threat
        • 2.Se6#
      • 1...Rb5
        • 2.Qg1#
      • 1...b5
        • 2.Qxa7#
      • 1...Bc5!
    • 1.Rg6?
      • threat
        • 2.Se6#
      • 1...Bc5
        • 2.Bxc5#
      • 1...b5
        • 2.Qxa7#
      • 1...Rb5!
    • 1.Re7?
      • threat
        • 2.Se6#
      • 1...Rb5
        • 2.Qg1#
      • 1...Bc5
        • 2.Bxc5#
      • 1...b5!
  • Keys
    • 1.Rh6!
      • threat
        • 2.Se6#
      • 1...Rb5
        • 2.Qg1#
      • 1...Bc5
        • 2.Bxc5#
      • 1...b5
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::QAB(H),XR(a)
    • R(a);N_GUARD::QAB(H)
    • S(b);S_CUTR(a)::QAB(H)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • B(f);XB(F)
    • Try
      • R(G);
      • Threat
        • S(J)
      • Vars
        • R(a);N_GUARD::QAB(H)
        • P(g);OGATE::QAB(H),XB(f)
      • Refutation
        • B(f);
    • Try
      • R(G);
      • Threat
        • S(J)
      • Vars
        • B(f);N_GUARD::B(F),XB(f)
        • P(g);OGATE::QAB(H),XB(f)
      • Refutation
        • R(a);
    • Try
      • R(G);
      • Threat
        • S(J)
      • Vars
        • R(a);N_GUARD::QAB(H)
        • B(f);N_GUARD::B(F),XB(f)
      • Refutation
        • P(g);
  • Actual
    • R(G);
    • Threat
      • S(J)
    • Vars
      • R(a);N_GUARD::QAB(H)
      • B(f);N_GUARD::B(F),XB(f)
      • P(g);OGATE::QAB(H),XB(f)
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