MESON Chess Problem Database

Problem Display
PID: 264913 (8/8/3Qp2B/5k2/8/2K2B2/R7/8 w - - 0 1)

Koshel, Mikhail Igorevich

1st Prize, Astafyeva-30 JT (Lightweights) (Kudesnik), 2021

8/8/3Qp2B/5k2/8/2K2B2/R7/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Re2?
      • threat
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...e5
        • 2.Rxe5#
      • 1...Kg6!
    • 1.Rg2?
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qg6#
      • 1...Kf6!
    • 1.Ra6?
      • threat
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...e5
        • 2.Qf8#
        • 2.Qe6#
        • 2.Qf6#
        • 2.Qg6#
        • 2.Qd7#
      • 1...Kg6!
    • 1.Ra7?
      • 1...Kg6
        • 2.Qxe6#
      • 1...e5
        • 2.Rf7#
      • 1...Kf6!
    • 1.Qe7?
      • threat
        • 2.Qg5#
      • 1...Ke5
        • 2.Ra5#
      • 1...e5
        • 2.Qf7#
      • 1...Kg6!
    • 1.Qf8+?
      • 1...Ke5
        • 2.Bf4#
        • 2.Bg7#
        • 2.Re2#
        • 2.Ra5#
        • 2.Qf4#
      • 1...Kg6!
  • Keys
    • 1.Bh5!
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Qxe6#
      • 1...Kf6
        • 2.Rf2#
      • 1...e5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAB1(D),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(D),XP(b)
        • P(b);::R1(A),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);OGATE,SBLOCK::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Threat
        • QAB1(D),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(D),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::QAR2(D),XP(b)
        • P(b);::R(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::R(A)
        • P(b);SBLOCK::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAR1(D)
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR2(D),XP(b)
      • K(a);N_GUARD,P-FLIGHT,P_SPINP(b)::R(A)
      • P(b);OGATE,SBLOCK::QAB1(D)
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