MESON Chess Problem Database

Problem Display
PID: 91496 (8/2p5/2Q5/5PP1/4pKP1/7p/p5Bk/R7 w - - 0 1)

Limbach, Saturnin

Probleemblad, 1963

8/2p5/2Q5/5PP1/4pKP1/7p/p5Bk/R7

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg2
      • 2.Qc2#
    • 1...hxg2
      • 2.Qh6#
    • 1...e3
      • 2.Rh1#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Rh1#
        • 2.Qc2#
      • 1...e3
        • 2.Rh1#
      • 1...exf3!
    • 1.Bxh3?
      • 1...e3
        • 2.Rh1#
        • 2.Qh1#
        • 2.Qg2#
      • 1...Kxh3!
    • 1.Qc1?
      • threat
        • 2.Qg1#
        • 2.Qh1#
      • 1...Kxg2
        • 2.Rxa2#
        • 2.Qb2#
        • 2.Qd2#
        • 2.Qg1#
        • 2.Qc2#
      • 1...hxg2!
    • 1.Qc2?
      • threat
        • 2.Bh1#
        • 2.Bf3#
        • 2.Bxe4#
        • 2.Rh1#
      • 1...e3
        • 2.Rh1#
      • 1...hxg2!
    • 1.Qc3?
      • threat
        • 2.Qg3#
        • 2.Qxh3#
      • 1...Kxg2
        • 2.Qb2#
        • 2.Qd2#
        • 2.Qc2#
        • 2.Qg3#
      • 1...hxg2
        • 2.Qh8#
        • 2.Qg3#
      • 1...e3!
    • 1.f6?
      • 1...Kxg2
        • 2.Qc2#
      • 1...e3
        • 2.Rh1#
      • 1...hxg2!
    • 1.g6?
      • 1...Kxg2
        • 2.Qc2#
      • 1...e3
        • 2.Rh1#
      • 1...hxg2!
  • Keys
    • 1.Qxc7!
      • 1...Kxg2
        • 2.Qc2#
      • 1...hxg2
        • 2.Qh7#
      • 1...e3
        • 2.Kf3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINP(d),XB(B)::QAR(G)
    • P(c);OGATEB,SBLOCK,XB(B)::QAR(G)
    • P(d);::R1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::R1(A)
      • Refutation
        • P(d);XB(B)
    • Try
      • B(B);XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);XB(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • P(d);::R1(A)
      • Refutation
        • P(c);P_SPINP(c),XB(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);
    • Try
      • P(E);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(d),XB(B)::QAR(G)
        • P(d);::R1(A)
      • Refutation
        • P(c);XB(B)
    • Try
      • P(F);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(d),XB(B)::QAR(G)
        • P(d);::R1(A)
      • Refutation
        • P(c);XB(B)
  • Actual
    • Q(G);XP(e)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XB(B)::QAR(G)
      • P(c);OGATEB,SBLOCK,XB(B)::QAR(G)
      • P(d);::QAB(G)+K(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).