MESON Chess Problem Database

Problem Display
PID: 198842 (6b1/2Q1p3/1p3p2/1N1p2P1/Rn1bkNP1/1R3p2/2nP4/7K w - - 0 1)

Schor, Laszlo

Chess Amateur (The), 1921

6b1/2Q1p3/1p3p2/1N1p2P1/Rn1bkNP1/1R3p2/2nP4/7K

#2

9 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be3
      • 2.d3#
    • 1...Sd3
      • 2.Sc3#
    • 1...Sa6
      • 2.Sc3#
    • 1...Sc6
      • 2.Sc3#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Sg3#
        • 2.Qf4#
      • 1...fxg5
        • 2.Sg3#
      • 1...Bf2
        • 2.Qf4#
      • 1...Be3
        • 2.Sg3#
        • 2.d3#
      • 1...Be5
        • 2.Qxc2#
      • 1...Sd3
        • 2.Sc3#
        • 2.Sg3#
      • 1...e5
        • 2.Sd6#
      • 1...Bc3!
    • 1.Re3+?
      • 1...Bxe3
        • 2.d3#
      • 1...Sxe3!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Qf4#
      • 1...fxg5
        • 2.Sxg5#
      • 1...Bc3
        • 2.Sf2#
      • 1...Be3
        • 2.d3#
      • 1...Be5
        • 2.Qxc2#
      • 1...Sd3
        • 2.Sc3#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(d);P_SPINS(c),SBLOCK::P(B)
    • S(c);P_SPINB(d)::S(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(H)::S(E)
        • B(d);P_SPINS(c)::QAR1(I)
        • B(d);P_SPINS(c),SBLOCK::QAB(I),XS(a)
        • P(i);N_GUARD,SBLOCK::S(G)
      • Refutation
        • B(d);P_SPINS(c)
    • Try
      • R(C);CHECK
      • Vars
        • B(d);P_SPINS(c),SBLOCK,XR(C)::P(B)
      • Refutation
        • S(a);XR(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(I)
    • Vars
      • P(h);XP(H)::S(E),XP(h)
      • B(d);N_GUARD,P_SPINS(c)::S(E)
      • B(d);P_SPINS(c),SBLOCK::P(B)
      • B(d);P_SPINS(c),SBLOCK::QAB(I),XS(a)
      • S(c);P_SPINB(d),SBLOCK::S(G)
      • P(i);N_GUARD,SBLOCK::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).