MESON Chess Problem Database

Problem Display
PID: 182740 (7Q/2p3r1/2p5/PpN2R2/2kP4/3Np3/2K2pr1/B4n1B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Boletim da UBP, 1990

7Q/2p3r1/2p5/PpN2R2/2kP4/3Np3/2K2pr1/B4n1B

#2

9 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4?
      • threat
        • 2.Rc5#
      • 1...R7g5
        • 2.Sab2#
      • 1...c5
        • 2.Rxc5#
      • 1...R2g5!
    • 1.Sd7?
      • threat
        • 2.Rc5#
      • 1...R2g5
        • 2.S7e5#
      • 1...c5
        • 2.Rxc5#
      • 1...R7g5!
    • 1.Qg8+?
      • 1...Rf7
        • 2.Qxf7#
      • 1...Rxg8!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Rc5#
      • 1...R2g5
        • 2.Se5#
      • 1...R7g5
        • 2.Sb2#
      • 1...c5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(H)
      • Vars
        • R(i);::S(G)
        • P(g);::R1(H),XP(g)
      • Refutation
        • R(c);
    • Try
      • S(G);
      • Threat
        • R1(H)
      • Vars
        • R(c);::S(G)
        • P(g);::R1(H),XP(g)
      • Refutation
        • R(i);
    • Try
      • Q(I);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAB(I),XR(i)
      • Refutation
        • R(i);XQ(I)
  • Actual
    • S(G);
    • Threat
      • R1(H)
    • Vars
      • R(c);::S(D)
      • R(i);::S(D)
      • P(g);::R1(H),XP(g)
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