MESON Chess Problem Database

Problem Display
PID: 145982 (3R1nB1/5r2/3pb3/2bkNp1p/2pN1R2/B1p5/8/4Q2K w - - 0 1)

Paslack, Rainer

The Problemist, 2011

3R1nB1/5r2/3pb3/2bkNp1p/2pN1R2/B1p5/8/4Q2K

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Rxd6#
    • 1...Bb6
      • 2.Rxd6#
    • 1...Ba7
      • 2.Rxd6#
  • Tries
    • 1.Sef3?
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Rxd6#
      • 1...Rd7
        • 2.Rxf5#
      • 1...Sg6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qxe6#
      • 1...Bd7!
    • 1.Sg4?
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Rxd6#
      • 1...fxg4
        • 2.Qe4#
      • 1...Rd7
        • 2.Sf6#
      • 1...Bd7
        • 2.Sf6#
      • 1...Sg6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qxe6#
      • 1...hxg4!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Rxd6#
      • 1...Sxg6
        • 2.Qxe6#
      • 1...Bd7
        • 2.Se7#
      • 1...Sd7
        • 2.Qxe6#
      • 1...Rd7!
  • Keys
    • 1.Sec6!
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Rxd6#
      • 1...Rd7
        • 2.Rxf5#
      • 1...Bd7
        • 2.Se7#
      • 1...Sg6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD,XS(D)::R1(G),XP(g)
    • B(c);N_GUARD::R1(G),XP(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(A)
      • Vars
        • B(c);N_GUARD,XS(D)::R1(G),XP(g)
        • R(i);N_GUARD,N_SPINP(g),P_SPINB(h)::R(E),XP(e)
        • S(j);N_GUARD::QAB1(A),XB(h)
        • S(j);N_GUARD,N_SPINP(g)::QAB1(A),XB(h)
      • Refutation
        • B(h);N_SPINP(g),P_SPINR(i)
    • Try
      • S(F);
      • Threat
        • QAR1(A)
      • Vars
        • B(c);N_GUARD,XS(D)::R1(G),XP(g)
        • P(e);N_GUARD,XS(F)::QAB1(A)
        • R(i);N_GUARD,N_SPINP(g),P_SPINB(h)::S(F)
        • B(h);N_SPINP(g),P_SPINR(i)::S(F)
        • S(j);N_GUARD::QAB1(A),XB(h)
        • S(j);N_GUARD,N_SPINP(g)::QAB1(A),XB(h)
      • Refutation
        • P(f);XS(F)
    • Try
      • S(F);
      • Threat
        • QAR1(A)
      • Vars
        • B(c);N_GUARD,XS(D)::R1(G),XP(g)
        • S(j);N_GUARD,XS(F)::QAB1(A),XB(h)
        • B(h);N_SPINP(g),P_SPINR(i)::S(F)
        • S(j);N_GUARD,N_SPINP(g)::QAB1(A),XB(h)
      • Refutation
        • R(i);N_SPINP(g),P_SPINB(h)
  • Actual
    • S(F);
    • Threat
      • QAR1(A)
    • Vars
      • B(c);N_GUARD,XS(D)::R1(G),XP(g)
      • R(i);N_GUARD,N_SPINP(g),P_SPINB(h)::R(E),XP(e)
      • B(h);N_SPINP(g),P_SPINR(i)::S(F)
      • S(j);N_GUARD::QAB1(A),XB(h)
      • S(j);N_GUARD,N_SPINP(g)::QAB1(A),XB(h)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).