MESON Chess Problem Database

Problem Display
PID: 257525 (3Q4/3pN3/3k1p2/4p3/K3pN1B/4R3/8/8 w - - 0 1)

Surikov, Vladislav

Astafyeva-30 JT (Kudesnik), 2021

3Q4/3pN3/3k1p2/4p3/K3pN1B/4R3/8/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qb6#
  • Tries
    • 1.Kb4?
      • 1...f5
        • 2.Qb6#
        • 2.Qb8#
      • 1...exf4!
    • 1.Kb5?
      • threat
        • 2.Sf5#
        • 2.Sc8#
      • 1...f5
        • 2.Sxf5#
        • 2.Sc8#
        • 2.Qb6#
        • 2.Qb8#
      • 1...exf4!
    • 1.Se2?
      • 1...Kc5
        • 2.Qc7#
      • 1...f5
        • 2.Qb6#
      • 1...Ke6!
    • 1.Se6?
      • 1...f5
        • 2.Qb6#
      • 1...Kxe6!
    • 1.Sf5+?
      • 1...Kc5
        • 2.Rc3#
        • 2.Qc7#
      • 1...Kc6!
    • 1.Sc8+?
      • 1...Kc6
        • 2.Qb6#
      • 1...Kc5!
    • 1.Rc3?
      • threat
        • 2.Sf5#
        • 2.Sc8#
        • 2.Rc6#
      • 1...f5
        • 2.Sxf5#
        • 2.Sc8#
        • 2.Rc6#
        • 2.Qb6#
        • 2.Qc7#
        • 2.Qb8#
      • 1...exf4!
    • 1.Rd3+?
      • 1...Kc5
        • 2.Qc7#
      • 1...exd3!
    • 1.Qb8+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Kxe7!
  • Keys
    • 1.Rxe4!
      • 1...Kc5
        • 2.Qc7#
      • 1...exf4
        • 2.Qb6#
      • 1...f5
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);::QAR2(F)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Refutation
        • P(b);XS(C)
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Vars
        • K(c);N_GUARD,N_SPINP(e),S_FLIGHT::QAR2(F)
        • P(d);::QAR2(F)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT
    • Try
      • S(C);
      • Vars
        • P(d);::QAR2(F)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT,XS(C)
    • Try
      • S(E);CHECK
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT::QAR1(F)
      • Refutation
        • K(c);N_SPINP(e),S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(b);XS(C)
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINP(e),S_FLIGHT::QAR2(F)
      • Refutation
        • P(a);XR(A)
    • Try
      • Q(F);CHECK,N_PINP(e)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(F)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT,XS(E)
  • Actual
    • R(A);XP(a)
    • Vars
      • K(c);N_GUARD,N_SPINP(e),S_FLIGHT::QAR2(F)
      • P(b);XS(C)::QAR2(F)
      • P(d);::QAR2(F)
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