MESON Chess Problem Database

Problem Display
PID: 184003 (4K3/6p1/1QppkN2/8/8/2B5/8/8 w - - 0 1)

Onufrienko, Sergey

Kudesnik, 2018

4K3/6p1/1QppkN2/8/8/2B5/8/8

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qe4#
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...gxf6
        • 2.Qe4#
      • 1...d5!
    • 1.Qxc6?
      • threat
        • 2.Qe4#
        • 2.Qd5#
        • 2.Qd7#
        • 2.Qc8#
      • 1...gxf6
        • 2.Qe4#
      • 1...Kf5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qe4#
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...gxf6
        • 2.Qe4#
      • 1...d5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(d);XS(C)::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);P_PINP(b),XP(a)
      • Threat
        • DUALS(4)
      • Vars
        • P(d);XS(C)::QAR2(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • P(d);XS(C)::QAR2(B)
      • P(b);N_GUARD::QAR1(B)
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