MESON Chess Problem Database

Problem Display
PID: 137960 (K1R2n2/1R2N1p1/4k3/1B5q/N3pQ2/B1p1n3/b2r4/3r2b1 w - - 0 1)

Buchwald, Julius

4th HM., BCF 113. Ty., 1966-1967

K1R2n2/1R2N1p1/4k3/1B5q/N3pQ2/B1p1n3/b2r4/3r2b1

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sc5#
    • 1...Qf3
      • 2.Sc5#
    • 1...Qg4
      • 2.Sc5#
    • 1...Qg6
      • 2.Sc5#
    • 1...Qf7
      • 2.Sc5#
    • 1...Qe8
      • 2.Sc5#
    • 1...Qh1
      • 2.Sc5#
    • 1...Qh2
      • 2.Sc5#
    • 1...Qh3
      • 2.Sc5#
    • 1...Qh4
      • 2.Sc5#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qh6
      • 2.Sc5#
    • 1...Qh7
      • 2.Sc5#
    • 1...Qh8
      • 2.Sc5#
    • 1...Bd5
      • 2.Sc5#
    • 1...Sd5
      • 2.Rc6#
    • 1...g5
      • 2.Sc5#
  • Tries
    • 1.Qd6+?
      • 1...Kf7
        • 2.Be8#
      • 1...Rxd6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc7#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Qxd5
        • 2.Re8#
      • 1...Rxd5
        • 2.Re7#
      • 1...Bxd5
        • 2.Sc5#
      • 1...Sxd5
        • 2.Rc6#
      • 1...Qf7
        • 2.Qxe4#
      • 1...Qe5
        • 2.Qf7#
      • 1...Qf5
        • 2.Qd6#
      • 1...Sf5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 14
  • Sets
    • Q(h);N_GUARD::S(B)
    • Q(h);N_GUARD,P_PINR(H)::S(B)
    • Q(h);N_GUARD::S(B),XQ(h)
    • B(c);P_PINR(E),S_CUTQ(h)::S(B)
    • S(f);S_CUTR(d)::R(H)
    • P(j);S_CUTQ(h)::S(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(i);S_FLIGHT::B(D)
      • Refutation
        • R(d);XQ(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(i);S_FLIGHT,XS(F)::QAR1(C)
      • Q(h);N_GUARD,P_PINR(E),SBLOCK,XS(F)::R(H)
      • R(d);SBLOCK,XS(F)::R1(E)
      • B(c);P_PINR(E),SBLOCK,XS(F)::S(B)
      • S(f);SBLOCK,XS(F)::R(H)
      • Q(h);N_GUARD::QAR2(C),XP(g)
      • Q(h);N_GUARD,SBLOCK::QAB1(C)
      • Q(h);SBLOCK::QAR1(C)
      • S(f);S_CUTQ(h)::QAR2(C),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).