MESON Chess Problem Database

Problem Display
PID: 61911 (5n2/8/3N4/2P5/4p1KQ/BBk1p3/8/2N5 w - - 0 1)

Baier, Roland

Comm., Eretria 5 Days Ty., 2005

5n2/8/3N4/2P5/4p1KQ/BBk1p3/8/2N5

#2

7 + 4

5673 Eretria Bulletin 2005
15527 schachkunst (1997-2010) (Hoffmann) 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Sxe4#
    • 1...Kd4
      • 2.Qf6#
      • 2.Qh8#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Sb5#
        • 2.Qxe3#
        • 2.Qb2#
      • 1...Kd4
        • 2.Qb2#
        • 2.Qf6#
      • 1...e2
        • 2.Sxe4#
        • 2.Qe3#
      • 1...exf2!
    • 1.Qg5?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Sb5#
        • 2.Bb2#
        • 2.Qf6#
        • 2.Qg7#
      • 1...e2
        • 2.Sb5#
        • 2.Qe3#
      • 1...Kd2!
    • 1.Qd8?
      • threat
        • 2.Sxe4#
        • 2.Sb5#
      • 1...Kd2
        • 2.Qa5#
      • 1...Kd4
        • 2.Qf6#
      • 1...Sd7!
    • 1.Qh2?
      • threat
        • 2.Sb5#
        • 2.Qb2#
      • 1...Kd4
        • 2.Sb5#
        • 2.Qb2#
        • 2.Qh8#
      • 1...e2!
    • 1.Qh3?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qh8#
      • 1...Kd2!
    • 1.Qh6?
      • threat
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qg7#
        • 2.Qf6#
        • 2.Qh8#
      • 1...e2
        • 2.Sb5#
        • 2.Qe3#
      • 1...Kd2!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qxe3#
      • 1...Kd2
        • 2.Sxe4#
      • 1...Kd4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(G),XP(c)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Refutation
        • P(b);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAR2(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • S(d);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
    • Try
      • Q(E);P_PINP(b)
      • Threat
        • QAR2(E),XP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(E);P_PINP(b)
    • Threat
      • QAR2(E),XP(b)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::S(G),XP(c)
      • K(a);N_SPINP(b),S_FLIGHT::S(G)
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