MESON Chess Problem Database

Problem Display
PID: 183254 (8/8/4pQn1/1P1kp3/8/1N6/4RK2/8 w - - 0 1)

Oplyan, Ekaterina

Kudesnik, 2018

8/8/4pQn1/1P1kp3/8/1N6/4RK2/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd8#
    • 1...e4
      • 2.Qd4#
  • Tries
    • 1.Rd2+?
      • 1...Ke4
        • 2.Sc5#
        • 2.Qf3#
      • 1...Kc4!
  • Keys
    • 1.Re4!
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qd8#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sh4
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(c)::QAR2(E)
    • P(b);OGATE::QAR1(E)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(A)::QAB1(E)
      • K(a);P-FLIGHT,P_SPINP(c)::QAR2(E)
      • S(d);N_GUARD::QAR1(E),XP(b)
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