MESON Chess Problem Database

Problem Display
PID: 103595 (B4N2/5n2/Q1Npppn1/1r4qR/3brkPP/1p2p1RP/7K/8 w - - 0 1)

Janal, Vladimir

ZN, 2001

B4N2/5n2/Q1Npppn1/1r4qR/3brkPP/1p2p1RP/7K/8

#2

10 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh4
      • 2.Sxg6#
    • 1...Qc5
      • 2.Sxg6#
    • 1...Qd5
      • 2.Sxg6#
    • 1...Qe5
      • 2.Sxg6#
    • 1...Rb4
      • 2.Qf1#
    • 1...Ra5
      • 2.Qf1#
    • 1...Rc5
      • 2.Qf1#
    • 1...Rd5
      • 2.Qf1#
    • 1...Re5
      • 2.Qf1#
    • 1...Rf5
      • 2.Qf1#
    • 1...Rb6
      • 2.Qf1#
    • 1...Rb7
      • 2.Qf1#
    • 1...Rb8
      • 2.Qf1#
    • 1...Be5
      • 2.Sxe6#
    • 1...Sge5
      • 2.Sxe6#
    • 1...Sfe5
      • 2.Sxe6#
    • 1...e5
      • 2.Se6#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sd3#
      • 1...Ke5
        • 2.Sd3#
        • 2.Sxg6#
      • 1...Sge5
        • 2.Sxe6#
      • 1...Sfe5
        • 2.Sxe6#
      • 1...Rxb4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sd3#
      • 1...Kxe5
        • 2.Sxg6#
      • 1...Qxe5
        • 2.Sxg6#
      • 1...Rexe5
        • 2.Rf3#
      • 1...Rbxe5
        • 2.Qf1#
      • 1...Bxe5
        • 2.Sxe6#
      • 1...Sgxe5
        • 2.Sxe6#
      • 1...Sfxe5
        • 2.Sxe6#
      • 1...dxe5
        • 2.Sxe6#
      • 1...fxe5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(g);N_GUARD,P_PINP(C),XP(E)::S(J),XS(k)
    • Q(g);N_GUARD::S(J),XS(k)
    • R(f);OGATE::QAR(G)
    • B(c);S_CUTR(d)::S(J),XP(i)
    • S(k);S_CUTR(d)::S(J),XP(i)
    • S(l);S_CUTR(d)::S(J),XP(i)
    • P(i);S_CUTR(d)::S(J)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(k);SBLOCK,S_CUTR(d)::S(J),XP(i)
        • S(l);SBLOCK,S_CUTR(d)::S(J),XP(i)
      • Refutation
        • R(f);XS(H)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(e);P_SPINQ(g),S_FLIGHT,XS(H)::S(J),XS(k)
      • Q(g);N_GUARD,XS(H)::S(J),XS(k)
      • R(d);SBLOCK,XS(H)::R1(B)
      • R(f);OGATE,SBLOCK,XS(H)::QAR(G)
      • B(c);SBLOCK,XS(H)::S(J),XP(i)
      • S(k);SBLOCK,XS(H)::S(J),XP(i)
      • S(l);SBLOCK,XS(H)::S(J),XP(i)
      • P(h);SBLOCK,XS(H)::S(J),XP(i)
      • P(j);SBLOCK,XS(H)::S(J),XP(i)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).