MESON Chess Problem Database

Problem Display
PID: 142712 (3NNb2/8/3P4/4kp1n/3R4/K1B5/5P2/8 w - - 0 1)

Bull, Cecil Alfred Lucas

British Chess Magazine, 1892

3NNb2/8/3P4/4kp1n/3R4/K1B5/5P2/8

#2

7 + 4

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.f4#
    • 1...Sf6
      • 2.f4#
    • 1...Sg7
      • 2.f4#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Bxd6+
        • 2.Rb4#
      • 1...Kxf6
        • 2.Rg4#
      • 1...Sxf6
        • 2.f4#
      • 1...f4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD::P(A)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • B(d);CHECK,SBLOCK,XP(E)::B(C)+R(D)
      • K(a);S_FLIGHT,XS(G)::B(C)+R(D)
      • S(c);N_GUARD,SBLOCK,XS(G)::P(A)
      • P(b);SBLOCK::B(C)+R(D),DCHECK
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