MESON Chess Problem Database

Problem Display
PID: 72666 (b1R1n3/4p3/N1n4B/3N1Qpr/3k4/1p6/5p2/3K1B2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Der Tagesspiegel (Berlin), 1993

b1R1n3/4p3/N1n4B/3N1Qpr/3k4/1p6/5p2/3K1B2

#2

7 + 9

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Rc4#
    • 1...Sa7
      • 2.Rc4#
    • 1...Sb8
      • 2.Rc4#
    • 1...Sd8
      • 2.Rc4#
    • 1...g4
      • 2.Be3#
    • 1...e5
      • 2.Qd3#
  • Tries
    • 1.Qf4+?
      • 1...Kxd5
        • 2.Bc4#
      • 1...gxf4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qc5#
      • 1...Kxc3
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe4#
      • 1...Se5
        • 2.Qxf2#
      • 1...g4
        • 2.Sb5#
      • 1...e5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(f);OGATE::R1(G)
    • P(d);OGATE::B(F)
    • P(g);SBLOCK::QAR1(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(C)::B(B)
      • Refutation
        • P(d);XQ(D)
  • Actual
    • S(C);
    • Threat
      • QAB1(D)
    • Vars
      • K(c);P_SPINS(f),S_FLIGHT,XS(C)::QAB(D)
      • K(c);P_SPINP(d),S_FLIGHT::QAR1(D)
      • S(f);SBLOCK::QAB(D),XP(a)
      • P(d);::S(C)
      • P(g);SBLOCK::QAR1(D)
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