MESON Chess Problem Database

Problem Display
PID: 257529 (8/8/1Qp2B2/3k4/8/R2B4/8/6K1 w - - 0 1)

Koshel, Mikhail Igorevich

Astafyeva-30 JT (Kudesnik), 2021

8/8/1Qp2B2/3k4/8/R2B4/8/6K1

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Rc3?
      • threat
        • 2.Qxc6#
      • 1...Kd6
        • 2.Qxc6#
      • 1...c5
        • 2.Rxc5#
      • 1...Ke6!
    • 1.Ra6?
      • threat
        • 2.Qxc6#
      • 1...Kd6
        • 2.Qxc6#
      • 1...c5
        • 2.Qd8#
        • 2.Qc6#
        • 2.Qd6#
        • 2.Qe6#
        • 2.Qb7#
      • 1...Ke6!
    • 1.Ra7?
      • 1...Ke6
        • 2.Qxc6#
      • 1...c5
        • 2.Rd7#
      • 1...Kd6!
    • 1.Qd8+?
      • 1...Kc5
        • 2.Be7#
        • 2.Qd4#
      • 1...Ke6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Qd4#
      • 1...Kc4
        • 2.Be6#
      • 1...Kd6
        • 2.Rd3#
      • 1...c5
        • 2.Qe6#

FEATURES

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