MESON Chess Problem Database

Problem Display
PID: 257646 (1b3R2/2p2Np1/1r4p1/1r6/1pB4p/8/3P1k2/6RK w - - 0 1)

Easter, Norris

British Chess Magazine, 1934

1b3R2/2p2Np1/1r4p1/1r6/1pB4p/8/3P1k2/6RK

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sg5#
    • 1...Rb7
      • 2.Se5#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Se5#
  • Tries
    • 1.Rg2+?
      • 1...Kf3
        • 2.Sg5#
      • 1...Ke1!
  • Keys
    • 1.Kh2!
      • threat
        • 2.Rf1#
      • 1...c5+
        • 2.Sd6#
      • 1...c6+
        • 2.Se5#
      • 1...Kf3
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(F)+S(E),DCHECK
    • R(e);N_GUARD::R(F)+S(E)
    • P(g);S_CUTR(d)::R(F)+S(E)
    • P(g);S_CUTR(e)::R(F)+S(E)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::R(F)+S(E),DCHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • R1(A)
    • Vars
      • P(g);CHECK,S_CUTR(d)::R(F)+S(E)
      • P(g);CHECK,S_CUTR(e)::R(F)+S(E)
      • K(a);P-FLIGHT::R(F)+S(E),DCHECK
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