MESON Chess Problem Database

Problem Display
PID: 270185 (N4n2/3rp2b/2pP4/2k5/1pP5/1B4N1/2R4K/3Q4 w - - 0 1)

Allen, Frederick B

Sunday Referee, 1931

(First published on Sun Apr 26 1931)

N4n2/3rp2b/2pP4/2k5/1pP5/1B4N1/2R4K/3Q4

#2

8 + 7

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sxe4#
    • 1...Bg8
      • 2.Se4#
    • 1...Sg6
      • 2.Se4#
    • 1...exd6
      • 2.Qg1#
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qe5#
      • 1...Kxd6
        • 2.c5#
      • 1...Rxd6
        • 2.Qa7#
      • 1...exd6
        • 2.Qg1#
      • 1...Be4
        • 2.Sxe4#
      • 1...Bg8
        • 2.Se4#
      • 1...Sg6
        • 2.Se4#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::S(E),XB(f)
    • B(f);N_GUARD::S(E)
    • S(g);S_CUTB(f)::S(E)
    • P(e);SBLOCK,XP(G)::QAB(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);OGATE,S_FLIGHT,XP(G)::P(F)
      • R(d);N_GUARD,SBLOCK,XP(G)::QAB(A)
      • P(e);SBLOCK,XP(G)::QAB(A)
      • B(f);N_GUARD::S(E),XB(f)
      • B(f);N_GUARD::S(E)
      • S(g);S_CUTB(f)::S(E)
      • P(e);::QAR2(A),XP(e)
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