MESON Chess Problem Database

Problem Display
PID: 263684 (8/8/KP6/8/pkp5/4Q3/8/3N4 w - - 0 1)

Zimmer, Eligiusz

Schweizerische Schachzeitung, 2010

8/8/KP6/8/pkp5/4Q3/8/3N4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qxc3#
  • Tries
    • 1.Qd2+?
      • 1...Ka3
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
    • 1.Qd4?
      • 1...Ka3
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
      • 1...a3!
    • 1.b7?
      • threat
        • 2.b8Q#
        • 2.b8R#
      • 1...c3
        • 2.Qxc3#
      • 1...a3!
  • Keys
    • 1.Qe5!
      • 1...Ka3
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
      • 1...c3
        • 2.Qxc3#
      • 1...a3
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);::QAB1(B),XP(c)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);P_PINP(c)
      • Vars
        • K(b);N_GUARD,N_SPINP(c),S_FLIGHT::QAB1(B)
        • K(b);N_GUARD,N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);
    • Try
      • P(D);
      • Threat
        • P=Q
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB1(B)
      • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • P(c);::QAB1(B),XP(c)
      • P(a);SBLOCK::QAR1(B)
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