MESON Chess Problem Database

Problem Display
PID: 258189 (8/8/N3p2K/4k3/8/1Q6/2N3B1/4B3 w - - 0 1)

Shtang, Arina

Astafyeva-30 JT (Kudesnik), 2021

8/8/N3p2K/4k3/8/1Q6/2N3B1/4B3

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kg6?
      • threat
        • 2.Bg3#
        • 2.Qg3#
        • 2.Qb8#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6!
    • 1.Bg3+?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kf6!
    • 1.Bh3?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...Ke4!
    • 1.Qxe6+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kxe6!
    • 1.Qd3?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kf6!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kf6!
    • 1.Qb5+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Kd6
        • 2.Bb4#
      • 1...Kf6!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(D)
        • K(a);N_GUARD,S_FLIGHT::QAR1(D),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(D)
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
      • K(a);N_GUARD,S_FLIGHT::QAB1(D)
      • K(a);N_GUARD,S_FLIGHT::QAR1(D),XP(b)
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