MESON Chess Problem Database

Problem Display
PID: 238274 (2B1N3/4p3/K1R2N1r/pp1Pkn2/3n3Q/1p1P2P1/2b5/4qrb1 w - - 0 1)

Segers, Marcel

Arbejder-Skak, 1932

2B1N3/4p3/K1R2N1r/pp1Pkn2/3n3Q/1p1P2P1/2b5/4qrb1

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qe4#
    • 1...Qf2
      • 2.Qe4#
    • 1...Qc3
      • 2.Qe4#
    • 1...Qxg3
      • 2.Qe4#
    • 1...Qb4
      • 2.Qe4#
    • 1...Qa1
      • 2.Qe4#
    • 1...Qb1
      • 2.Qe4#
    • 1...Qc1
      • 2.Qe4#
    • 1...Qd1
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Rf4
      • 2.Qxf4#
      • 2.gxf4#
    • 1...Bf2
      • 2.Qf4#
    • 1...Be3
      • 2.Qe4#
    • 1...Se2
      • 2.Re6#
      • 2.Qe4#
    • 1...Sf3
      • 2.Re6#
      • 2.Qf4#
    • 1...Se6
      • 2.Rxe6#
    • 1...Se3
      • 2.Qe4#
  • Keys
    • 1.Rc5!
      • threat
        • 2.d6#
      • 1...Qc3
        • 2.Qe4#
      • 1...Qb4
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Sf3
        • 2.Qf4#
      • 1...Sc6
        • 2.Sd7#
      • 1...Se6
        • 2.Sd7#
      • 1...Se3
        • 2.Qe4#
      • 1...Sd6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::QAR1(C)
    • Q(a);N_GUARD,XP(B)::QAR1(C)
    • Q(a);N_GUARD::QAR1(C),XQ(a)
    • B(c);S_CUTR(b)::QAB1(C)
    • B(c);S_CUTQ(a)::QAR1(C)
    • S(f);N_GUARD::R1(F),XS(f)
    • S(j);S_CUTQ(a)::QAR1(C)
  • Actual
    • R(F);P_SPINS(G)
    • Threat
      • R(F)+P(D)
    • Vars
      • Q(a);N_GUARD::QAR1(C)
      • Q(a);N_GUARD::QAR1(C),XQ(a)
      • S(f);S_CUTQ(a)::QAR1(C)
      • S(f);S_CUTR(b)::QAB1(C)
      • S(f);N_PINS(G)::S(G)
      • S(j);S_CUTQ(a)::QAR1(C)
      • S(j);N_PINS(G)::S(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).