MESON Chess Problem Database

Problem Display
PID: 149655 (5B1K/q4p2/p2Q4/RNn1P3/2kN3p/R6r/PP6/1n1b4 w - - 0 1)

Zhebenev, Valery Oleksandrovich

Hlas l'udu, 1985

5B1K/q4p2/p2Q4/RNn1P3/2kN3p/R6r/PP6/1n1b4

#2

10 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Qxc5#
    • 1...Qb7
      • 2.Qxc5#
    • 1...Qd7
      • 2.Qxc5#
    • 1...Qa8
      • 2.Qxc5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd4#
      • 1...Qd7
        • 2.Qxc5#
      • 1...Sb3
        • 2.R3a4#
      • 1...Sd3
        • 2.b3#
      • 1...Sa4
        • 2.R3xa4#
      • 1...Se4
        • 2.R3a4#
      • 1...Se6
        • 2.R3a4#
      • 1...Sb7
        • 2.R3a4#
      • 1...Sd7
        • 2.R3a4#
      • 1...Rd3!
    • 1.Qd5+?
      • 1...Kb4
        • 2.Sc6#
      • 1...Kxd5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qd4#
      • 1...Kb4
        • 2.Qd4#
      • 1...Qd7
        • 2.Qxc5#
      • 1...Sb3
        • 2.R3a4#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Se4
        • 2.Qd3#
      • 1...Se6
        • 2.Qd3#
      • 1...Sb7
        • 2.Qd3#
      • 1...Sd7
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD,P_PINB(I)::QAR1(H),XS(f)
    • Q(h);N_GUARD::QAR1(H),XS(f)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(H)
      • Vars
        • Q(h);N_GUARD::QAR1(H),XS(f)
        • S(f);N_GUARD::R(C)
        • S(f);N_GUARD,S_CUTR(c)::P(B)
        • S(f);N_GUARD::R(C),XS(f)
      • Refutation
        • R(c);
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f)::S(D)
      • Refutation
        • K(d);S_FLIGHT,XQ(H)
  • Actual
    • S(D);
    • Threat
      • QAR1(H)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(f)::QAR2(H)
      • Q(h);N_GUARD::QAR1(H),XS(f)
      • S(f);N_GUARD,S_CUTB(b)::R(C)
      • S(f);N_GUARD::QAB1(H),XS(f)
      • S(f);N_GUARD::QAB1(H)
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