MESON Chess Problem Database

Problem Display
PID: 276436 (5NQ1/p1R5/K3P1B1/1pPk4/1R1n1P2/1p5b/2p1p3/b5Bq w - - 0 1)

Dittrich, Stefan

Mat, 1981

5NQ1/p1R5/K3P1B1/1pPk4/1R1n1P2/1p5b/2p1p3/b5Bq

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Be4#
    • 1...Sf5
      • 2.e7#
    • 1...Sc6
      • 2.Rd7#
    • 1...b2
      • 2.Rxd4#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sf6#
      • 1...Sxe6
        • 2.Qa8#
      • 1...Sf3
        • 2.Be4#
      • 1...Sf5
        • 2.e7#
      • 1...Sc6!
    • 1.Qg7?
      • threat
        • 2.Qe5#
        • 2.Qd7#
      • 1...Bxe6
        • 2.Qe5#
      • 1...Sxe6
        • 2.Qd7#
      • 1...Bf5
        • 2.Qe5#
      • 1...e1Q
        • 2.Qd7#
      • 1...e1R
        • 2.Qd7#
      • 1...Qe4
        • 2.Qd7#
      • 1...Sf3
        • 2.Be4#
        • 2.Qd7#
      • 1...Sc6
        • 2.Rd7#
        • 2.Qd7#
      • 1...Sf5!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Sf6#
      • 1...Sxe6
        • 2.Qa8#
      • 1...Sf3
        • 2.Be4#
      • 1...Sf5
        • 2.e7#
      • 1...Sc6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(g);S_CUTQ(b)::B(G)
    • S(g);N_GUARD,S_CUTB(f)::QAB(J)+P(F)
    • S(g);SBLOCK::R(H)
    • P(e);S_CUTB(a)::R1(B),XS(g)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • S(g);N_GUARD,P_SPINS(g),SBLOCK,XP(F)::QAB(J)
        • S(g);S_CUTQ(b)::B(G)
        • S(g);N_GUARD,S_CUTB(f)::QAB(J)+P(F)
      • Refutation
        • S(g);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XP(F)::QAR1(J)
        • S(g);XP(F)::QAR2(J)
        • B(f);::QAR1(J)
        • P(d);::QAR2(J)
        • Q(b);::QAR2(J)
      • Refutation
        • S(g);
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • S(g);N_GUARD,P_SPINS(g),SBLOCK,XP(F)::QAB(J)
      • S(g);S_CUTQ(b)::B(G)
      • S(g);N_GUARD,S_CUTB(f)::QAB(J)+P(F)
      • S(g);SBLOCK::R(H)
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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).