MESON Chess Problem Database

Problem Display
PID: 94514 (8/K5p1/1BBN3q/2QNkP1b/8/6p1/5P2/b7 w - - 0 1)

Kosek, Wojtech

Sachove umeni (Ceskoslovensky sach), 1929

8/K5p1/1BBN3q/2QNkP1b/8/6p1/5P2/b7

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.f4#
    • 1...Qf6
      • 2.f4#
    • 1...Qg6
      • 2.f4#
    • 1...Qh7
      • 2.f4#
    • 1...Qh8
      • 2.f4#
  • Tries
    • 1.Sc3+?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kf4!
    • 1.Se3+?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kf4!
    • 1.Sb4+?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kf4!
    • 1.Sf4+?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kxf4!
    • 1.Qc2?
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.Bc7#
      • 1...Qxd6
        • 2.f4#
      • 1...Be2
        • 2.Sf7#
      • 1...Qf4!
    • 1.Qc3+?
      • 1...Kxd6
        • 2.Bc7#
      • 1...Bxc3!
  • Keys
    • 1.Sf6+!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxf6
        • 2.Bd8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(e);N_GUARD::P(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(E)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Threat
        • S(G)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(G)::B(E)
        • Q(e);N_GUARD,SBLOCK,XS(G)::P(A)
        • B(d);N_GUARD::S(G)
      • Refutation
        • Q(e);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(G)::B(E)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • S(C);CHECK
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);S_FLIGHT,XS(C)::B(E)
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