MESON Chess Problem Database

Problem Display
PID: 165902 (8/2n2N2/5bQp/2RPBPpP/2n1k1p1/2p1P3/K1P1B2R/5N1b w - - 0 1)

Bunka, Vladislav

Die Schwalbe, 2017

8/2n2N2/5bQp/2RPBPpP/2n1k1p1/2p1P3/K1P1B2R/5N1b

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Bd3#
    • 1...Bxe5
      • 2.f6#
    • 1...Be7
      • 2.f6#
    • 1...Bg7
      • 2.f6#
    • 1...Bd8
      • 2.f6#
    • 1...Bh8
      • 2.f6#
    • 1...Sxe3
      • 2.Sg3#
    • 1...Sxe5
      • 2.Sd6#
    • 1...Sxd5
      • 2.Rxc4#
    • 1...Se6
      • 2.fxe6#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Sg3#
      • 1...Bxd4
        • 2.f6#
      • 1...Be5
        • 2.f6#
      • 1...g3
        • 2.Sxg3#
      • 1...Sxe3!
    • 1.Rf2?
      • threat
        • 2.Bd3#
      • 1...Sxe5
        • 2.Sd6#
      • 1...Sb2!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Rxg4#
      • 1...Bxe5
        • 2.f6#
      • 1...Sxe3
        • 2.Sg3#
      • 1...Sxe5
        • 2.Sd6#
      • 1...Sxd5
        • 2.Rxc4#
      • 1...gxh4
        • 2.Qxg4#
      • 1...Bf3
        • 2.Bd3#
      • 1...Se6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);SBLOCK::B(D)
    • B(g);OGATE,XB(I)::QAB(L)+P(J)
    • B(g);OGATE::QAB(L)+P(J)
    • S(c);SBLOCK,XP(F)::S(A)
    • S(c);N_GUARD,SBLOCK,XB(I)::S(M)
    • S(i);SBLOCK,XP(H)::R(G),XS(c)
    • S(i);OGATE::QAB(L)+P(J),XS(i)
  • Tries
    • Try
      • B(I);
      • Threat
        • S(A)
      • Vars
        • B(g);OGATE,XB(I)::QAB(L)+P(J)
        • B(g);OGATE::QAB(L)+P(J)
        • P(e);::S(A),XP(e)
      • Refutation
        • S(c);XP(F)
    • Try
      • R(E);
      • Threat
        • B(D)
      • Vars
        • S(c);N_GUARD,SBLOCK,XB(I)::S(M)
      • Refutation
        • S(c);
  • Actual
    • R(E);P_PINP(e)
    • Threat
      • R(E),XP(e)
    • Vars
      • B(g);OGATE,XB(I)::QAB(L)+P(J)
      • S(c);SBLOCK,XP(F)::S(A)
      • S(c);N_GUARD,SBLOCK,XB(I)::S(M)
      • S(i);SBLOCK,XP(H)::R(G),XS(c)
      • P(f);N_SPINP(e),OGATE,XR(E)::QAR2(L),XP(e)
      • B(a);SBLOCK::B(D)
      • S(i);OGATE::QAB(L)+P(J),XS(i)
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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).