MESON Chess Problem Database

Problem Display
PID: 168467 (N1K5/2p5/1pk1Np2/prPR4/1n5b/1B2R1nb/8/6B1 w - - 0 1)

Petite, Efren

Comm., Arbejder-Skak, 1956

N1K5/2p5/1pk1Np2/prPR4/1n5b/1B2R1nb/8/6B1

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sd4#
      • 2.Sd8#
    • 1...Bg2
      • 2.Sd4#
      • 2.Sd8#
    • 1...Bxe6+
      • 2.Rxe6#
    • 1...Sf5
      • 2.Sd8#
    • 1...f5
      • 2.Sd4#
  • Keys
    • 1.Rd7!
      • threat
        • 2.Rxc7#
      • 1...Rxc5
        • 2.Sd4#
      • 1...Bxe6
        • 2.Rxe6#
      • 1...bxc5
        • 2.Sd8#
      • 1...Sd5
        • 2.Bxd5#
      • 1...Sa6
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(b);CHECK,OGATE,XS(F)::R(C),XB(b)
    • S(a);N_PINS(F)::S(F)
    • P(i);N_PINS(F)::S(F)
  • Actual
    • R(E);N_SPINS(F)
    • Threat
      • R1(E),XP(j)
    • Vars
      • R(f);SBLOCK,XP(D)::S(F)
      • B(b);OGATE,P_PINR(E),XS(F)::R(C),XB(b)
      • P(g);SBLOCK,XP(D)::S(F)
      • S(c);N_GUARD::B(B),XS(c)
      • S(c);N_GUARD::B(B)
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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).