MESON Chess Problem Database

Problem Display
PID: 268323 (8/8/B1p1p3/P1k1PbN1/2N1PPp1/K5R1/4n2B/2nR4 w - - 0 1)

Constable, BC

Sunday Referee, 1929

(First published on Sun Apr 7 1929)

8/8/B1p1p3/P1k1PbN1/2N1PPp1/K5R1/4n2B/2nR4

#2

11 + 7

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Sxe4#
      • 2.Sxe6#
    • 1...Bg6
      • 2.Sxe6#
    • 1...Bh7
      • 2.Sxe6#
    • 1...Sg1
      • 2.Bxg1#
    • 1...Sc3
      • 2.Bg1#
    • 1...Sxg3
      • 2.Bg1#
    • 1...Sxf4
      • 2.Bg1#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Sa4#
      • 1...Sc3
        • 2.Bg1#
        • 2.Rxc3#
      • 1...Sd3!
    • 1.Sb6?
      • threat
        • 2.Sa4#
        • 2.Sd7#
      • 1...Sc3
        • 2.Sd7#
        • 2.Bg1#
        • 2.Rxc3#
      • 1...Sd3!
    • 1.Bg1+?
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sxg1!
  • Keys
    • 1.Sd2!
      • 1...Kd4
        • 2.Sb3#
      • 1...Bxe4
        • 2.Sdxe4#
      • 1...Sxg3
        • 2.Bg1#
      • 1...Sxf4
        • 2.Bg1#
      • 1...Bg6
        • 2.Sxe6#
      • 1...Bh7
        • 2.Sxe6#
      • 1...Sa2
        • 2.Sb3#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sb3#
      • 1...Sg1
        • 2.Bxg1#
      • 1...Sc3
        • 2.Bg1#
      • 1...Sd4
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::S(J),XP(g)
    • S(b);N_GUARD::B(B),XS(b)
    • S(b);N_GUARD::B(B)
    • S(b);N_GUARD,XR(D)::B(B)
    • S(b);N_GUARD,XP(G)::B(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Refutation
        • S(a);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
      • Refutation
        • S(b);XB(B)
  • Actual
    • S(E);
    • Vars
      • K(d);S_FLIGHT::R(A)+S(E),DCHECK
      • B(e);XP(F)::S(E),XB(e)
      • S(b);N_GUARD,XR(D)::B(B)
      • S(b);N_GUARD,XP(G)::B(B)
      • B(e);N_GUARD::S(J),XP(g)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • S(b);N_GUARD::B(B),XS(b)
      • S(b);N_GUARD::B(B)
      • S(b);N_GUARD,SBLOCK::R(D)
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