MESON Chess Problem Database

Problem Display
PID: 82047 (n2Nk3/6K1/2pRpPN1/8/p1Q5/5r2/q7/2r5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Arbejder-Skak, 1951

n2Nk3/6K1/2pRpPN1/8/p1Q5/5r2/q7/2r5

#2

6 + 8

6490 yacpdb 2009
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qxe6#
    • 1...Qa1
      • 2.Qxe6#
    • 1...Qb2
      • 2.Qxe6#
    • 1...Qc2
      • 2.Qxe6#
    • 1...Qd2
      • 2.Qxe6#
    • 1...Qf2
      • 2.Qxe6#
    • 1...Qg2
      • 2.Qxe6#
    • 1...Qh2
      • 2.Qxe6#
    • 1...Qa3
      • 2.Qxe6#
    • 1...Ra1
      • 2.Qxc6#
    • 1...Rb1
      • 2.Qxc6#
    • 1...Rd1
      • 2.Qxc6#
    • 1...Re1
      • 2.Qxc6#
    • 1...Rcf1
      • 2.Qxc6#
    • 1...Rg1
      • 2.Qxc6#
    • 1...Rh1
      • 2.Qxc6#
    • 1...Ra3
      • 2.f7#
    • 1...Rb3
      • 2.Qxe6#
      • 2.f7#
    • 1...Rc3
      • 2.f7#
    • 1...Rd3
      • 2.f7#
    • 1...Re3
      • 2.f7#
    • 1...Rg3
      • 2.f7#
    • 1...Rh3
      • 2.f7#
    • 1...c5
      • 2.Qb5#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Rd8#
      • 1...Qd2
        • 2.Qxe6#
      • 1...Rd3
        • 2.f7#
      • 1...Rd1!
    • 1.Sxe6?
      • threat
        • 2.Rd8#
      • 1...Rd1
        • 2.Qxc6#
      • 1...Rd3
        • 2.f7#
      • 1...Qd2!
    • 1.Sf7?
      • threat
        • 2.Rd8#
      • 1...Qd2
        • 2.Qxe6#
      • 1...Rd1
        • 2.Qxc6#
      • 1...Rd3!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Rd8#
      • 1...Qd2
        • 2.Qxe6#
      • 1...Rd1
        • 2.Qxc6#
      • 1...Rd3
        • 2.f7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 20
  • Sets
    • Q(b);N_GUARD::QAR2(A),XP(f)
    • Q(b);N_GUARD,P_PINP(C)::QAR2(A),XP(f)
    • Q(b);N_GUARD,P_PINS(D)::QAR2(A),XP(f)
    • R(a);N_GUARD::QAB(A),XP(e)
    • R(a);N_GUARD,P_PINS(D)::QAB(A),XP(e)
    • R(c);N_GUARD::P(C)
    • R(c);N_GUARD,P_PINS(D)::P(C)
    • P(e);OGATEB::QAB(A)
  • Tries
    • Try
      • S(F);XP(e)
      • Threat
        • R1(B)
      • Vars
        • Q(b);N_GUARD::QAR2(A),XP(f)
        • R(c);N_GUARD::P(C)
      • Refutation
        • R(a);
    • Try
      • S(F);XP(f)
      • Threat
        • R1(B)
      • Vars
        • R(a);N_GUARD::QAB(A),XP(e)
        • R(c);N_GUARD::P(C)
      • Refutation
        • Q(b);
    • Try
      • S(F);
      • Threat
        • R1(B)
      • Vars
        • Q(b);N_GUARD::QAR2(A),XP(f)
        • R(a);N_GUARD::QAB(A),XP(e)
      • Refutation
        • R(c);
  • Actual
    • S(F);
    • Threat
      • R1(B)
    • Vars
      • Q(b);N_GUARD::QAR2(A),XP(f)
      • R(a);N_GUARD::QAB(A),XP(e)
      • R(c);N_GUARD::P(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).