MESON Chess Problem Database

Problem Display
PID: 135163 (6B1/2K5/3N4/1p1pkp1N/b3p2n/6P1/5Q2/8 w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1999

6B1/2K5/3N4/1p1pkp1N/b3p2n/6P1/5Q2/8

#2

6 + 7

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qxe3#
      • 2.Qf4#
    • 1...d4
      • 2.Qf4#
    • 1...f4
      • 2.gxf4#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Sf7#
      • 1...e3
        • 2.Qxe3#
        • 2.Qf4#
      • 1...d4
        • 2.Qf4#
      • 1...f4
        • 2.gxf4#
      • 1...b4+!
    • 1.Sc4+?
      • 1...dxc4
        • 2.Qc5#
      • 1...bxc4!
    • 1.Qd2?
      • threat
        • 2.Qxd5#
      • 1...d4
        • 2.Qf4#
      • 1...Bb3!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Sf7#
      • 1...e3
        • 2.Qxe3#
      • 1...d4
        • 2.Qc5#
      • 1...f4
        • 2.gxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAB1(A)
    • P(g);OGATE::P(B),XP(g)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • S(D)
      • Vars
        • P(e);SBLOCK::QAB1(A)
        • P(g);OGATE::P(B),XP(g)
      • Refutation
        • P(d);CHECK
    • Try
      • S(D);CHECK
      • Vars
        • P(e);S_CUTP(d),XS(D)::QAR2(A)
      • Refutation
        • P(d);XS(D)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • P(e);SBLOCK::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • P(b);OGATEB::QAR2(A),XP(b)
      • P(e);OGATEB::QAR2(A)
      • P(g);OGATE::P(B),XP(g)
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