MESON Chess Problem Database

Problem Display
PID: 162129 (8/n5n1/1Q6/pbpBN3/pk1p1N2/R2R4/1bP5/5K2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schach Magazin, 1986

8/n5n1/1Q6/pbpBN3/pk1p1N2/R2R4/1bP5/5K2

#2

8 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sc8
      • 2.Sc6#
    • 1...c4
      • 2.Qd6#
  • Tries
    • 1.Se6?
      • threat
        • 2.Qxc5#
      • 1...c4
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sxe6!
    • 1.Sd7?
      • threat
        • 2.Qxc5#
      • 1...c4
        • 2.Qc5#
        • 2.Qd6#
      • 1...Se6!
    • 1.Qxb5+?
      • 1...Sxb5
        • 2.Sc6#
      • 1...Kxb5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Rxa4#
      • 1...Kxa3
        • 2.Qxc5#
      • 1...Bxa3
        • 2.Sd5#
      • 1...axb3
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(h);N_GUARD::S(G),XS(h)
    • S(h);N_GUARD::S(G)
    • P(g);N_PINR(D),OGATEB::QAB(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(H),XP(g)
      • Refutation
        • S(i);XS(E)
    • Try
      • S(G);
      • Threat
        • QAB1(H),XP(g)
      • Refutation
        • S(i);
    • Try
      • Q(H);CHECK,N_SPINR(D),XB(f)
      • Vars
        • S(h);SBLOCK,XQ(H)::S(G)
      • Refutation
        • K(c);P-FLIGHT,XQ(H)
  • Actual
    • B(F);
    • Threat
      • R1(C),XP(b)
    • Vars
      • K(c);N_SPINB(f),S_FLIGHT,XR(C)::QAB(H),XP(g)
      • B(a);SBLOCK,XR(C)::S(E)
      • P(b);XB(F)::QAB1(H),XP(e)
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