MESON Chess Problem Database

Problem Display
PID: 101476 (1K5Q/7p/pB2PP2/1nRpR1N1/3k4/rr3pb1/2P1n1Nq/8 w - - 0 1)

Westbury, Eric Ernest

Good Companions (March), 1917

1K5Q/7p/pB2PP2/1nRpR1N1/3k4/rr3pb1/2P1n1Nq/8

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5+
      • 2.Rc7#
    • 1...Sec3
      • 2.Sxf3#
    • 1...Sbc3
      • 2.Sxf3#
    • 1...Sd6
      • 2.Rexd5#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qxd5#
      • 1...Bxe5+
        • 2.Rc7#
      • 1...Kxe5
        • 2.Rxd5#
      • 1...Sec3
        • 2.Sxf3#
      • 1...Sf4
        • 2.Re4#
      • 1...Sbc3
        • 2.Sxf3#
      • 1...Sd6
        • 2.Rexd5#
      • 1...Sc7
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);CHECK,SBLOCK,XR(D)::B(F)+R(C)
    • S(a);S_CUTR(d)::S(E),XP(e)
    • S(h);P_PINB(F),S_CUTR(d)::S(E),XP(e)
    • S(h);N_PINR(D),P_PINB(F)::R1(D),XP(i)
  • Actual
    • Q(J);P_PINP(i)
    • Threat
      • QAR1(J),XP(i)
    • Vars
      • B(f);CHECK,SBLOCK,XR(D)::B(F)+R(C)
      • K(g);S_FLIGHT,XR(D)::R1(C),XP(i)
      • S(a);S_CUTR(d)::S(E),XP(e)
      • S(a);N_PINR(D)::R1(D)
      • S(h);P_PINB(F),S_CUTR(d)::S(E),XP(e)
      • S(h);N_PINR(D),N_SPINP(i),P_PINB(F)::R1(D),XP(i)
      • S(h);N_PINR(D),P_PINB(F)::R1(D)
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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).