MESON Chess Problem Database

Problem Display
PID: 150144 (5bN1/3PqkpK/5Npp/8/B5P1/1R6/7B/8 w - - 0 1)

Foster, A

The Referee, 1924

(First published on Sun Nov 23 1924)

5bN1/3PqkpK/5Npp/8/B5P1/1R6/7B/8

#2

8 + 6

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.d8S#
    • 1...Qb4
      • 2.d8S#
    • 1...Qc5
      • 2.d8S#
    • 1...Qe1
      • 2.d8S#
    • 1...Qe2
      • 2.d8S#
    • 1...Qe3
      • 2.d8S#
    • 1...Qe4
      • 2.d8S#
    • 1...Qe5
      • 2.d8S#
    • 1...Qe6
      • 2.d8S#
    • 1...Qe8
      • 2.dxe8Q#
  • Keys
    • 1.Rb7!
      • threat
        • 2.d8S#
      • 1...Ke6
        • 2.Bb3#
      • 1...Qxd7
        • 2.Bb3#
      • 1...Qd8
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_GUARD::P=S
    • Q(c);OGATE::PXQ(c)=Q
  • Actual
    • R(B);
    • Threat
      • P=S
    • Vars
      • K(d);S_FLIGHT::B(C)
      • Q(c);N_GUARD,P_SPINQ(c),XP(F)::B(C)
      • Q(c);N_GUARD::B(C)
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