MESON Chess Problem Database

Problem Display
PID: 287155 (4B3/2R2p1K/4p3/2Pk3N/bR1nn3/1p1N4/2p4B/4rr1Q w - - 0 1)

Vaughan, Colin V

The Problemist, 1948

4B3/2R2p1K/4p3/2Pk3N/bR1nn3/1p1N4/2p4B/4rr1Q

#2

9 + 10

6490 yacpdb 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Shf4#
      • 2.Sf6#
    • 1...Rxh1
      • 2.Shf4#
    • 1...Rf4
      • 2.Shxf4#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Se2
      • 2.Qxe4#
    • 1...Sf3
      • 2.Shf4#
    • 1...Sb5
      • 2.Bc6#
    • 1...Sf5
      • 2.Sf6#
    • 1...Sc6
      • 2.Rd7#
    • 1...f5
      • 2.Sf6#
  • Tries
    • 1.Bc6+?
      • 1...Sxc6
        • 2.Rd7#
      • 1...Bxc6!
    • 1.Rd7+?
      • 1...Kc6
        • 2.Rb6#
        • 2.Rdxd4#
        • 2.Rd8#
      • 1...Bxd7!
  • Keys
    • 1.Be5!
      • threat
        • 2.Rxd4#
      • 1...Se2
        • 2.Qxe4#
      • 1...Sf3
        • 2.Shf4#
      • 1...Sb5
        • 2.Bc6#
      • 1...Sf5
        • 2.Sf6#
      • 1...Sc6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD,N_SPINS(g),XQ(A)::S(F)
    • R(b);N_GUARD::S(F),XR(b)
    • S(f);S_CUTR(a)::QAB1(A),XS(g)
    • S(f);N_SPINS(g),S_CUTR(b)::S(F)
    • S(f);N_GUARD,S_CUTB(e)::B(I)
    • S(f);S_CUTR(b)::S(F)
    • S(f);SBLOCK,S_CUTB(e)::R(G)
    • P(j);S_CUTR(b)::S(F)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(f);SBLOCK,XB(I)::R(G)
      • Refutation
        • B(e);XB(I)
    • Try
      • R(G);CHECK
      • Refutation
        • B(e);XR(G)
  • Actual
    • B(B);
    • Threat
      • R1(D),XS(f)
    • Vars
      • S(f);S_CUTR(a)::QAB1(A),XS(g)
      • S(f);N_SPINS(g),S_CUTR(b)::S(F)
      • S(f);N_GUARD,S_CUTB(e)::B(I)
      • S(f);S_CUTR(b)::S(F)
      • S(f);SBLOCK,S_CUTB(e)::R(G)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).