MESON Chess Problem Database

Problem Display
PID: 53669 (4r3/8/6n1/3R1pq1/4k2N/2Bp3N/B4Pn1/2b4K w - - 0 1)

JB of Bridport (Brown, John)

Source?, 0000

4r3/8/6n1/3R1pq1/4k2N/2Bp3N/B4Pn1/2b4K

#2

7 + 8

15 British Chess Magazine 1906
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1950
15351 SCPF/BCPS Black Books 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rd4#
    • 1...Be3
      • 2.f3#
    • 1...Se3
      • 2.f3#
    • 1...S2f4
      • 2.Sxg5#
    • 1...S6f4
      • 2.Sxg5#
    • 1...Se5
      • 2.Rd4#
    • 1...Se7
      • 2.Re5#
    • 1...f4
      • 2.Sxg5#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Bd5#
      • 1...Re5
        • 2.Rd4#
      • 1...Se3
        • 2.f3#
      • 1...S2f4
        • 2.Sxg5#
      • 1...S6f4
        • 2.Sxg5#
      • 1...d2
        • 2.Bb1#
      • 1...f4
        • 2.Sxg5#
      • 1...Se7!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Bd5#
      • 1...Re5
        • 2.Rd4#
      • 1...Se3
        • 2.f3#
      • 1...S2f4
        • 2.Sxg5#
      • 1...S6f4
        • 2.Sxg5#
      • 1...Se7
        • 2.Re6#
      • 1...d2
        • 2.Bb1#
      • 1...f4
        • 2.Sxg5#

This anticipates 186697(1960)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(h);SBLOCK::R1(G)
    • B(a);SBLOCK::P(C)
    • S(b);SBLOCK::P(C)
    • S(b);SBLOCK,S_CUTB(a)::S(E),XQ(f)
    • S(g);SBLOCK,S_CUTB(a)::S(E),XQ(f)
    • S(g);SBLOCK::R1(G)
    • S(g);N_GUARD,S_CUTR(h)::R1(G)
    • P(e);SBLOCK,S_CUTB(a)::S(E),XQ(f)
  • Tries
    • Try
      • R(G);
      • Threat
        • B(B)
      • Vars
        • R(h);SBLOCK::R1(G)
        • S(b);SBLOCK::P(C)
        • S(b);SBLOCK,S_CUTB(a)::S(E),XQ(f)
        • S(g);SBLOCK,S_CUTB(a)::S(E),XQ(f)
        • P(c);OGATEB::B(B)
        • P(e);SBLOCK,S_CUTB(a)::S(E),XQ(f)
      • Refutation
        • S(g);
  • Actual
    • R(G);
    • Threat
      • B(B)
    • Vars
      • R(h);SBLOCK::R1(G)
      • S(b);SBLOCK::P(C)
      • S(b);SBLOCK,S_CUTB(a)::S(E),XQ(f)
      • S(g);SBLOCK,S_CUTB(a)::S(E),XQ(f)
      • S(g);N_GUARD,S_CUTR(h)::R(G)
      • P(c);OGATEB::B(B)
      • P(e);SBLOCK,S_CUTB(a)::S(E),XQ(f)
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