MESON Chess Problem Database

Problem Display
PID: 145432 (4rR2/1N6/n5r1/Q2n2p1/3pk3/6B1/4PP2/K7 w - - 0 1)

Lyons, Linden

Probleemblad, 2011

4rR2/1N6/n5r1/Q2n2p1/3pk3/6B1/4PP2/K7

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rg7
      • 2.Sd6#
    • 1...Rg8
      • 2.Sd6#
    • 1...Sc3
      • 2.Qf5#
    • 1...Se3
      • 2.f3#
    • 1...Sdb4
      • 2.Qf5#
    • 1...Sf4
      • 2.Qf5#
    • 1...Sb6
      • 2.Qf5#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sdc7
      • 2.Qf5#
    • 1...Se7
      • 2.Qe5#
    • 1...Sab4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sac7
      • 2.Sc5#
    • 1...Sb8
      • 2.Sc5#
  • Tries
    • 1.Rxe8+?
      • 1...Re6
        • 2.Sd6#
      • 1...Se7
        • 2.Qe5#
      • 1...Kf5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...d3
        • 2.Qxd3#
        • 2.Qc4#
      • 1...Sc3
        • 2.Qf5#
      • 1...Se3
        • 2.f3#
      • 1...Sdb4
        • 2.Qf5#
      • 1...Sf4
        • 2.Qf5#
      • 1...Sb6
        • 2.Qf5#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sdc7
        • 2.Qf5#
      • 1...Se7
        • 2.Qe5#
      • 1...Sab4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::S(F),XR(f)
    • R(f);N_GUARD::S(F)
    • S(c);OGATE::QAB1(E)
    • S(c);SBLOCK::P(C)
    • S(c);S_CUTR(f)::S(F)
    • S(c);OGATE::QAR1(E)
    • S(e);N_GUARD::S(F)
    • S(e);N_GUARD::S(F),XS(e)
  • Tries
    • Try
      • R(G);CHECK,XR(g)
      • Vars
        • R(f);P_SPINR(f)::S(F)
        • S(c);OGATE,P_SPINS(c)::QAR1(E)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • S(c);OGATE::QAB1(E)
      • S(c);SBLOCK::P(C)
      • S(c);S_CUTR(f)::S(F)
      • S(c);OGATE::QAR1(E)
      • S(e);N_GUARD::S(F)
      • S(e);N_GUARD::S(F),XS(e)
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