MESON Chess Problem Database

Problem Display
PID: 141332 (8/8/8/2n5/8/1b6/4Q3/K1kN4 w - - 0 1)

Curth, Heinz

Deutsche Schachzeitung, 1987

8/8/8/2n5/8/1b6/4Q3/K1kN4

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd1
      • 2.Qb2#
  • Tries
    • 1.Sb2?
      • 1...Bd1
        • 2.Qxd1#
      • 1...Ba2
        • 2.Qd1#
      • 1...Bc2
        • 2.Qe3#
      • 1...Bc4
        • 2.Qd1#
      • 1...Bd5
        • 2.Qd1#
      • 1...Be6
        • 2.Qd1#
      • 1...Bf7
        • 2.Qd1#
      • 1...Bg8
        • 2.Qd1#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.Sd3#
      • 1...Se4
        • 2.Sd3#
      • 1...Sa6
        • 2.Sd3#
      • 1...Se6
        • 2.Sd3#
      • 1...Sb7
        • 2.Sd3#
      • 1...Sd7
        • 2.Sd3#
      • 1...Ba4!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qb2#
      • 1...Bc2
        • 2.Qe3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XS(B)::QAB1(C)
  • Tries
    • Try
      • S(B);
      • Vars
        • B(b);N_GUARD::QAR1(C),XB(b)
        • B(b);N_GUARD::QAR1(C)
        • B(b);SBLOCK::QAB(C)
        • S(c);N_GUARD::S(B),XS(c)
        • S(c);N_GUARD::S(B)
      • Refutation
        • B(b);
  • Actual
    • S(B);
    • Threat
      • QAB1(C)
    • Vars
      • B(b);SBLOCK::QAB(C)
      • S(c);N_GUARD::S(B),XS(c)
      • S(c);N_GUARD::S(B)
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