MESON Chess Problem Database

Problem Display
PID: 171250 (4K2n/3p4/R2N3p/3Pk2P/3pPN2/7P/1n1B2R1/7Q w - - 0 1)

Archakov, Vladimir Mikhailovich

Moiseev, Vadim Petrovich

Sachove umeni (Ceskoslovensky sach), 1977

4K2n/3p4/R2N3p/3Pk2P/3pPN2/7P/1n1B2R1/7Q

#2

11 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ke7?
      • 1...Sg6+
        • 2.Sxg6#
      • 1...Sd1
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.Sd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sf7
        • 2.Sg6#
      • 1...d3!
    • 1.Sd3+?
      • 1...Kf6
        • 2.Qf1#
        • 2.e5#
      • 1...Sxd3!
    • 1.Sc4+?
      • 1...Kxe4
        • 2.Rg5#
      • 1...Sxc4!
    • 1.Sf7+?
      • 1...Kxe4
        • 2.Rg5#
      • 1...Sxf7!
    • 1.Rf2?
      • 1...d3
        • 2.Bc3#
      • 1...Sd1
        • 2.Sd3#
        • 2.Sc4#
      • 1...Sd3
        • 2.Sxd3#
        • 2.Sc4#
      • 1...Sa4
        • 2.Sd3#
        • 2.Sc4#
      • 1...Sc4
        • 2.Sd3#
        • 2.Sxc4#
      • 1...Sg6
        • 2.Sxg6#
        • 2.Sf7#
      • 1...Sf7
        • 2.Sg6#
        • 2.Sxf7#
      • 1...Kf6!
    • 1.Rg4?
      • 1...d3
        • 2.Bc3#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Kf6!
    • 1.Rg6?
      • 1...Sxg6
        • 2.Sf7#
      • 1...Sd1
        • 2.Sd3#
        • 2.Sc4#
      • 1...Sd3
        • 2.Sxd3#
        • 2.Sc4#
      • 1...Sa4
        • 2.Sd3#
        • 2.Sc4#
      • 1...Sc4
        • 2.Sd3#
        • 2.Sxc4#
      • 1...Sf7
        • 2.Sxf7#
      • 1...d3!
    • 1.Qe1?
      • 1...Kf6
        • 2.e5#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...d3!
  • Keys
    • 1.Qf1!
      • 1...Kf6
        • 2.Sd3#
      • 1...d3
        • 2.Bc3#
      • 1...Sd1
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.Sd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sf7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(K);P-FLIGHT
      • Vars
        • S(f);CHECK,N_GUARD::S(F),XS(f)
        • S(a);N_GUARD::S(F)
        • S(a);N_GUARD::S(F),XS(a)
        • S(f);N_GUARD::S(F)
      • Refutation
        • P(b);
    • Try
      • S(F);CHECK
      • Refutation
        • S(a);XS(F)
    • Try
      • S(J);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::QAB(A)+R(C)
      • Refutation
        • S(a);XS(J)
    • Try
      • S(J);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(E)::QAB(A)+R(C)
      • Refutation
        • S(f);XS(J)
    • Try
      • R(C);
      • Vars
        • P(b);OGATEB::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(b);OGATEB::B(B)
        • S(a);N_GUARD::S(J)
        • S(a);N_GUARD::S(J),XS(a)
        • S(f);N_GUARD::S(J)
        • S(f);N_GUARD::S(J),XS(f)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • S(f);N_GUARD,XR(C)::S(J)
        • S(f);N_GUARD::S(J),XS(f)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(c);OGATE,S_FLIGHT::P(E)
        • S(a);N_GUARD::S(J)
        • S(a);N_GUARD::S(J),XS(a)
        • S(f);N_GUARD::S(J)
        • S(f);N_GUARD::S(J),XS(f)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAR(A)+S(F)
      • P(b);OGATEB::B(B)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(a)
      • S(f);N_GUARD::S(F),XS(f)
      • S(f);N_GUARD::S(F)
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