MESON Chess Problem Database

Problem Display
PID: 274067 (2rn1r2/B2Q4/4P1p1/2bp1Pp1/3Pk1B1/2RNp3/K3N3/5R2 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

2rn1r2/B2Q4/4P1p1/2bp1Pp1/3Pk1B1/2RNp3/K3N3/5R2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Sxc5#
    • 1...Rb8
      • 2.Sxc5#
    • 1...Ba3
      • 2.Sg3#
    • 1...Bb4
      • 2.Sg3#
    • 1...Bxd4
      • 2.Sg3#
    • 1...Be7
      • 2.Sg3#
    • 1...Sc6
      • 2.Sxc5#
    • 1...Sxe6
      • 2.Qxe6#
    • 1...gxf5
      • 2.Bf3#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Sg3#
      • 1...Rxc5
        • 2.Sxc5#
      • 1...Ra8+!
    • 1.e7?
      • threat
        • 2.Bf3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Rxf5!
  • Keys
    • 1.Sdf4!
      • threat
        • 2.Qxd5#
      • 1...Rxf5
        • 2.Bf3#
      • 1...gxf4
        • 2.Rxf4#
      • 1...Bd6
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(g);N_GUARD,P_PINB(J)::S(E),XB(c)
    • R(g);N_GUARD::S(E),XB(c)
    • B(c);::S(C)
    • B(c);XP(F)::S(C)
    • S(h);S_CUTR(g)::S(E),XB(c)
    • S(h);OGATE,XP(I)::QAR2(K),XS(h)
    • P(f);SBLOCK,XP(H)::B(G)
  • Tries
    • Try
      • B(J);XB(c)
      • Threat
        • S(C)
      • Vars
        • R(g);XB(J)::S(E),XR(g)
      • Refutation
        • R(g);CHECK
    • Try
      • P(I);
      • Threat
        • B(G)
      • Vars
        • S(h);N_GUARD::QAR2(K),XS(h)
      • Refutation
        • R(i);XP(H)
  • Actual
    • S(E);
    • Threat
      • QAB1(K),XP(d)
    • Vars
      • R(i);SBLOCK,XP(H)::B(G)
      • P(e);OGATE,XS(E)::R1(A),XP(e)
      • B(c);::S(C)
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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).