MESON Chess Problem Database

Problem Display
PID: 146366 (7Q/5p1B/2bN4/4r1p1/1P1k1qR1/2p1N3/2P5/K5B1 w - - 0 1)

Kemp, Charles Edward

British Chess Magazine, 1919

7Q/5p1B/2bN4/4r1p1/1P1k1qR1/2p1N3/2P5/K5B1

#2

9 + 7

15044 Kemp Archive 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Sdf5#
    • 1...Bh1
      • 2.Sb5#
    • 1...Bg2
      • 2.Sb5#
    • 1...Bf3
      • 2.Sb5#
    • 1...Be4
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bd5
      • 2.Sd1#
      • 2.Sf1#
      • 2.Sg2#
      • 2.Sec4#
      • 2.Sef5#
      • 2.Sb5#
    • 1...Bb7
      • 2.Sb5#
    • 1...Ba8
      • 2.Sb5#
  • Tries
    • 1.Rxf4+?
      • 1...Be4
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Rxe4#
      • 1...gxf4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sef5#
      • 1...Qf1+
        • 2.Sxf1#
      • 1...Qxe3
        • 2.Bxc6#
      • 1...Qxe4
        • 2.Sdf5#
      • 1...Bxe4
        • 2.Sb5#
      • 1...Qf5
        • 2.Sexf5#
        • 2.Sdxf5#
      • 1...f5
        • 2.Sexf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(c);::S(G)
    • B(f);N_GUARD::S(G)
    • B(f);N_GUARD,N_SPINQ(c)::S(G)
    • B(f);N_GUARD::S(G),XB(f)
  • Tries
    • Try
      • R(F);CHECK,XQ(c)
      • Refutation
        • P(e);XR(F)
  • Actual
    • B(H);N_PINQ(c)
    • Threat
      • B(B)+S(D),DCHECK
    • Vars
      • Q(c);CHECK,N_GUARD::B(B)+S(D),XQ(c)
      • Q(c);OGATEB,P_SPINQ(c),XS(D)::R(F)+B(H),XB(f)
      • Q(c);N_GUARD,P_SPINQ(c),XB(H)::S(G)
      • B(f);N_GUARD,SBLOCK,XB(H)::S(G)
      • P(g);::B(B)+S(D),DCHECK,XP(g)
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