MESON Chess Problem Database

Problem Display
PID: 54247 (b1Q3KB/3p4/N5R1/p2k1p2/r6p/1n4N1/1n6/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

5th Prize, Chess Life, 1955-1956

b1Q3KB/3p4/N5R1/p2k1p2/r6p/1n4N1/1n6/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qxd7#
    • 1...Sc4
      • 2.Qxa8#
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sd2
      • 2.Qc5#
    • 1...Sd4
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Sc7#
      • 1...Rc4
        • 2.Qe5#
      • 1...Sc4
        • 2.Qf3#
      • 1...hxg3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sc7#
      • 1...Rc4
        • 2.Qxf5#
      • 1...Sc4
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(c);SBLOCK::QAR2(D),XP(h)
    • S(a);SBLOCK::QAB(D),XB(i)
    • S(b);N_GUARD::QAR1(D)
    • S(b);N_GUARD::QAR1(D),XS(b)
  • Tries
    • Try
      • Q(D);
      • Threat
        • S(B)
      • Vars
        • R(c);SBLOCK::QAR1(D)
        • S(a);SBLOCK,S_CUTR(c)::QAB(D)
      • Refutation
        • P(d);XS(A)
  • Actual
    • Q(D);
    • Threat
      • S(B)
    • Vars
      • R(c);SBLOCK::QAR2(D),XP(g)
      • S(a);SBLOCK,S_CUTR(c)::QAB(D)
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