MESON Chess Problem Database

Problem Display
PID: 264030 (4N2B/1Q2pK2/n1P1P3/1B1k4/1b1pNR2/2r1pp2/2r5/q7 w - - 0 1)

Buchwald, Julius

Tijdschrift vd KNSB, 1951

4N2B/1Q2pK2/n1P1P3/1B1k4/1b1pNR2/2r1pp2/2r5/q7

#2

9 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qd7#
    • 1...Ba5
      • 2.Qd7#
    • 1...Bc5
      • 2.c7#
    • 1...Sc5
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sb8
      • 2.Sc7#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Rf5#
      • 1...Kc5
        • 2.Rf5#
      • 1...Bd6!
    • 1.Sg5?
      • threat
        • 2.Rf5#
      • 1...Kc5
        • 2.Rf5#
      • 1...Bd6!
    • 1.Qc7?
      • threat
        • 2.Qe5#
      • 1...Sxc7
        • 2.Sxc7#
      • 1...Bd6!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...Sxb8
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Bd6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rf5#
      • 1...Kxc5
        • 2.Rf5#
      • 1...Rxc5
        • 2.Qd7#
      • 1...Bxc5
        • 2.c7#
      • 1...Sxc5
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);S_CUTB(f)::QAR2(F)
    • B(f);N_GUARD::QAR2(F)
    • B(f);S_CUTR(c)::QAB(F)+P(D)
    • S(i);N_GUARD::S(H)
    • S(i);N_GUARD::S(H),XS(i)
  • Tries
    • Try
      • S(A);
      • Threat
        • R(B)
      • Vars
        • K(h);P-FLIGHT::R(B)
      • Refutation
        • B(f);
    • Try
      • S(A);
      • Threat
        • R(B)
      • Vars
        • K(h);P-FLIGHT::R(B)
      • Refutation
        • B(f);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(i);XQ(F)::S(H),XS(i)
      • Refutation
        • B(f);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(i);N_GUARD,XQ(F)::S(H)
        • S(i);N_GUARD::S(H),XS(i)
      • Refutation
        • B(f);
  • Actual
    • S(A);
    • Threat
      • R(B)
    • Vars
      • K(h);P-FLIGHT,XS(A)::R(B)
      • R(c);SBLOCK,XS(A)::QAR2(F)
      • B(f);SBLOCK,XS(A)::QAB(F)+P(D)
      • S(i);SBLOCK,XS(A)::R1(B),XP(g)
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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).