MESON Chess Problem Database

Problem Display
PID: 264915 (8/2Q1K3/8/1kp5/4P3/8/2B5/4B3 w - - 0 1)

Nagovitsin, Eduard Nikolaevich

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

8/2Q1K3/8/1kp5/4P3/8/2B5/4B3

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kd6?
      • 1...Kc4
        • 2.Qxc5#
      • 1...c4
        • 2.Qa5#
        • 2.Qc6#
        • 2.Qb7#
      • 1...Ka6!
    • 1.Bf2?
      • 1...Kb4
        • 2.Qxc5#
      • 1...Kc4
        • 2.Qxc5#
      • 1...c4
        • 2.Qb6#
      • 1...Ka6!
    • 1.Ba5?
      • 1...Ka6
        • 2.Qb6#
      • 1...c4
        • 2.Qb6#
      • 1...Kc4!
    • 1.Bb3?
      • threat
        • 2.Qb7#
      • 1...Ka6
        • 2.Bc4#
      • 1...c4!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Qa4#
      • 1...Kc6!
    • 1.Qd6?
      • 1...Kc4
        • 2.Qd3#
      • 1...c4!
    • 1.Qc6+?
      • 1...Kc4
        • 2.Qa4#
      • 1...Kxc6!
  • Keys
    • 1.Qa7!
      • 1...Kc4
        • 2.Qa4#
      • 1...Kc6
        • 2.Ba4#
      • 1...c4
        • 2.Ba4#

FEATURES

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