MESON Chess Problem Database

Problem Display
PID: 190395 (8/3rr2Q/R2N1Bn1/3k2N1/2pP4/3n4/7b/KB6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Leipziger Volkszeitung, 2000

(First published on Fri Oct 13 2000)

8/3rr2Q/R2N1Bn1/3k2N1/2pP4/3n4/7b/KB6

#2

8 + 7

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Qe4#
    • 1...c3
      • 2.Ba2#
  • Tries
    • 1.Qg8+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Rf7!
    • 1.Qf7+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Rxf7!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Ba2#
      • 1...Re5
        • 2.Qxd7#
      • 1...Be5
        • 2.Qh1#
      • 1...Sde5
        • 2.Be4#
      • 1...Sge5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE::QAB1(H)
    • P(c);OGATEB::B(B)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(H),XR(g)
      • Refutation
        • R(g);P_SPINR(g)
    • Try
      • Q(H);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(H),XR(g)
      • Refutation
        • R(g);XQ(H)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • P(c);OGATEB::B(B)
      • R(g);OGATE::QAR2(H),XR(f)
      • B(a);OGATE,P_PINP(C)::QAB(H)
      • S(b);OGATE::B(B)
      • S(e);OGATE::QAB1(H)
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