MESON Chess Problem Database

Problem Display
PID: 232609 (6K1/BN1Pp3/2p1P3/2r1kBP1/R1n1P2Q/1N1np3/2pR4/6b1 w - - 0 1)

Heyl, Peter

Freie Presse, 2011

6K1/BN1Pp3/2p1P3/2r1kBP1/R1n1P2Q/1N1np3/2pR4/6b1

#2

12 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Bd4#
    • 1...Rb5
      • 2.Bd4#
    • 1...Sc1
      • 2.Qg3#
    • 1...Se1
      • 2.Qg3#
    • 1...Sdb2
      • 2.Qg3#
    • 1...Sf2
      • 2.Qg3#
    • 1...Sb4
      • 2.Qg3#
    • 1...Sf4
      • 2.Qh8#
    • 1...Scb2
      • 2.Bb8#
    • 1...Sxd2
      • 2.Bb8#
    • 1...Sa3
      • 2.Bb8#
    • 1...Sa5
      • 2.Bb8#
    • 1...Sb6
      • 2.Bb8#
  • Tries
    • 1.S3xc5?
      • threat
        • 2.Sxd3#
      • 1...Kd4
        • 2.Qh8#
      • 1...Sxc5
        • 2.Qg3#
      • 1...Sc1
        • 2.Qg3#
      • 1...Se1
        • 2.Qg3#
      • 1...Sdb2
        • 2.Qg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...Sb4
        • 2.Qg3#
      • 1...Sf4
        • 2.Qh8#
      • 1...Scb2
        • 2.Bb8#
      • 1...c1S!
    • 1.Sd8?
      • threat
        • 2.Sf7#
      • 1...Kd6
        • 2.Bb8#
      • 1...Sd6!
    • 1.Rxd3?
      • threat
        • 2.Qg3#
      • 1...Bh2
        • 2.Qxh2#
      • 1...Bf2!
    • 1.Qh2+?
      • 1...Sf4
        • 2.Qh8#
      • 1...Bxh2!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qh8#
      • 1...Sxd2
        • 2.Bb8#
      • 1...Se1
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • R(f);OGATE::B(I)
    • S(c);N_GUARD::QAB(E)
    • S(c);SBLOCK::QAB(E)
    • S(e);N_GUARD::B(I)
    • S(e);N_GUARD,XR(A)::B(I)
  • Tries
    • Try
      • S(B);XR(f)
      • Threat
        • S(B),XS(c)
      • Vars
        • K(g);P_SPINS(c),S_FLIGHT::QAB(E)
        • S(c);N_GUARD,XS(B)::QAB(E)
        • S(c);N_GUARD::QAB(E)
        • S(c);SBLOCK::QAB(E)
        • S(e);N_GUARD::B(I)
      • Refutation
        • P(b);
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • K(g);P_SPINS(c),S_FLIGHT::B(I)
      • Refutation
        • S(e);
    • Try
      • R(A);XS(c)
      • Threat
        • QAB(E)
      • Vars
        • B(a);N_GUARD::QAB(E),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(E);CHECK
      • Vars
        • S(c);P_SPINS(c),SBLOCK::QAB(E)
      • Refutation
        • B(a);XQ(E)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(g);P_SPINR(f),P_SPINS(c),S_FLIGHT,XS(B)::QAB(E)
      • S(e);N_GUARD,XR(A)::B(I)
      • S(c);N_GUARD::QAB(E)
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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).