MESON Chess Problem Database

Problem Display
PID: 167281 (8/5P1r/2K4p/4kpb1/Q4N2/8/1R3PP1/8 w - - 0 1)

Semerad, Bohumil

1st Prize, Pravo lidu, 1911

8/5P1r/2K4p/4kpb1/Q4N2/8/1R3PP1/8

#2

7 + 5

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Re2#
      • 2.Rb5#
  • Tries
    • 1.f8Q?
      • threat
        • 2.Re2#
        • 2.Rb5#
        • 2.Qd6#
      • 1...Bxf4
        • 2.Qd6#
      • 1...Rf7
        • 2.Qd6#
      • 1...Rb7
        • 2.Re2#
        • 2.Qd6#
      • 1...Rd7
        • 2.Re2#
      • 1...Re7
        • 2.Re2#
        • 2.Rb5#
      • 1...Be7
        • 2.Re2#
      • 1...Rc7+!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rb4#
      • 1...Kd4
        • 2.Rb4#
      • 1...Ke4
        • 2.Rb4#
      • 1...Kxf4
        • 2.Rb4#
      • 1...Kf6
        • 2.Rb7#
      • 1...Bxf4
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(G);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);XS(E)::QAB1(G)
        • R(e);::QAB1(G)
        • R(e);::R(A)
        • B(c);::R(A)
      • Refutation
        • R(e);CHECK
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+R(A)
    • Vars
      • K(a);S_FLIGHT::QAB(D)+R(A),DCHECK
      • K(a);P-FLIGHT::R(A)
      • K(a);S_FLIGHT,XS(E)::R(A)
      • K(a);S_FLIGHT::QAB(D)+R(A)
      • B(c);SBLOCK,XS(E)::QAB(D)+R(A),DCHECK
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