MESON Chess Problem Database

Problem Display
PID: 211588 (4b3/3PPQpK/2P1P1Np/RB2B2k/1p1p1q2/4pPbN/6PR/5nrr w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2019

4b3/3PPQpK/2P1P1Np/RB2B2k/1p1p1q2/4pPbN/6PR/5nrr

#2

14 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Shf4#
    • 1...Qxf3
      • 2.Qxf3#
    • 1...Qh4
      • 2.Sgf4#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Bh4
      • 2.Sgxf4#
  • Tries
    • 1.Qf5+?
      • 1...Qg5
        • 2.Shf4#
      • 1...Qxf5!
  • Keys
    • 1.Be2!
      • threat
        • 2.Bxf4#
      • 1...Qxe5
        • 2.f4#
      • 1...Qxf3
        • 2.Bxf3#
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Qxf7
        • 2.f4#
      • 1...Qg5
        • 2.Shf4#
      • 1...Qe4
        • 2.fxe4#
      • 1...Qg4
        • 2.fxg4#
      • 1...Qh4
        • 2.Sgf4#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Qf6
        • 2.f4#
      • 1...Bh4
        • 2.Sgxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(h);SBLOCK::R(B)+S(D),DCHECK
    • Q(h);OGATE,XP(C)::QAB(M),XQ(h)
    • Q(h);SBLOCK::QAB(M)+S(J),DCHECK
    • Q(h);N_GUARD,P_PINS(J)::QAR2(M),XQ(h)
    • B(e);SBLOCK::QAB(M)+S(J),DCHECK,XQ(h)
  • Tries
    • Try
      • Q(M);CHECK
      • Vars
        • Q(h);P_SPINQ(h)::R(B)+S(D),DCHECK
      • Refutation
        • Q(h);P_PINS(J),XQ(M)
  • Actual
    • B(F);
    • Threat
      • R(E)+B(G),XQ(h)
    • Vars
      • Q(h);OGATE,P_SPINQ(h),XB(G)::B(F)+P(C)
      • Q(h);OGATE,XQ(M)::B(F)+P(C)
      • Q(h);SBLOCK::R(B)+S(D),DCHECK
      • Q(h);OGATE,P_PINS(J)::B(F)+P(C),XQ(h)
      • Q(h);OGATE::P(C),XQ(h)
      • Q(h);SBLOCK::QAB(M)+S(J),DCHECK
      • Q(h);N_GUARD,P_PINS(J)::QAR2(M),XQ(h)
      • Q(h);OGATE::B(F)+P(C)
      • B(e);SBLOCK::QAB(M)+S(J),DCHECK,XQ(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).