MESON Chess Problem Database

Problem Display
PID: 136993 (8/4p2K/6Q1/5P1P/RB2r1pk/3NNR2/4p1pP/5br1 w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2010

8/4p2K/6Q1/5P1P/RB2r1pk/3NNR2/4p1pP/5br1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Be1#
    • 1...Rc4
      • 2.Bxe7#
    • 1...Rd4
      • 2.Bxe7#
    • 1...Rf4
      • 2.Bxe7#
    • 1...Re5
      • 2.Be1#
      • 2.Qxg4#
    • 1...Re6
      • 2.Be1#
      • 2.Qxg4#
    • 1...e5
      • 2.Be7#
    • 1...e6
      • 2.Be7#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qxg4#
      • 1...Rxf4
        • 2.Bxe7#
      • 1...gxf3
        • 2.Qg3#
        • 2.Qg4#
      • 1...g3
        • 2.Qxg3#
        • 2.Qg4#
        • 2.hxg3#
      • 1...Rxe3!
    • 1.Rh3+?
      • 1...gxh3
        • 2.Be1#
        • 2.Bxe7#
      • 1...Kxh3!
    • 1.Qf6+?
      • 1...Kxh5
        • 2.Qh6#
      • 1...exf6!
  • Keys
    • 1.Kh6!
      • threat
        • 2.Qg5#
      • 1...gxf3
        • 2.Qg3#
      • 1...g3
        • 2.Qxg3#
      • 1...Re6
        • 2.Be1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);S_CUTP(f),XS(C)::B(F)
    • R(e);N_GUARD::B(F),XP(h)
    • P(h);S_CUTR(e)::B(F)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(I),XP(f)
      • Vars
        • R(e);N_GUARD,XS(B)::B(F),XP(h)
      • Refutation
        • R(e);XS(C)
    • Try
      • R(D);CHECK
      • Refutation
        • K(g);P-FLIGHT,XR(D)
    • Try
      • Q(I);CHECK
      • Vars
        • K(g);OGATEB,P-FLIGHT,XP(H)::QAR1(I)
      • Refutation
        • P(h);XQ(I)
  • Actual
    • K(J);P-FLIGHT
    • Threat
      • QAB1(I)
    • Vars
      • P(f);OGATE,XR(D)::QAB1(I)
      • P(f);OGATE::QAB1(I),XP(f)
      • R(e);P_PINQ(I),S_CUTP(f)::B(F)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).