MESON Chess Problem Database

Problem Display
PID: 166069 (1b6/pQnNK3/p1P1P3/p2kN3/r1R1p1BR/1p2p3/P1n5/4r3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

1st Prize, Troll, 2017-2018

1b6/pQnNK3/p1P1P3/p2kN3/r1R1p1BR/1p2p3/P1n5/4r3

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Rc5#
    • 1...Sb5
      • 2.c7#
    • 1...Sxe6
      • 2.Bxe6#
      • 2.c7#
    • 1...Sa8
      • 2.c7#
    • 1...Se8
      • 2.c7#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Bxe4#
      • 1...exf3
        • 2.Rc5#
      • 1...Rxc4!
    • 1.Rh5?
      • threat
        • 2.Sf6#
      • 1...Rxc4
        • 2.Sf3#
      • 1...Se8
        • 2.c7#
      • 1...Rf1!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rc5#
      • 1...Kxc4
        • 2.Qxb3#
      • 1...Rxc4
        • 2.Rh5#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...exf3
        • 2.Bxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(b);SBLOCK::R1(B)
    • S(k);OGATE::QAB(H)+P(F)
  • Tries
    • Try
      • B(C);P_PINP(f)
      • Threat
        • B(C),XP(f)
      • Vars
        • P(f);N_SPINP(f),XB(C)::R1(B)
      • Refutation
        • R(e);XR(B)
    • Try
      • R(D);
      • Threat
        • S(I)
      • Vars
        • R(e);SBLOCK,XR(B)::R(D)+S(E)
        • S(k);OGATE::QAB(H)+P(F)
      • Refutation
        • R(a);
  • Actual
    • S(E);
    • Threat
      • R1(B)
    • Vars
      • K(h);OGATEB,S_FLIGHT,XR(B)::QAB1(H),XP(c)
      • R(e);SBLOCK,XR(B)::R(D)
      • S(k);OGATE,XP(G)::B(C),XS(k)
      • P(f);OGATE,XS(E)::B(C),XP(f)
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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).