MESON Chess Problem Database

Problem Display
PID: 202663 (1B6/7K/R3N3/3k2p1/2p5/5q1n/6Q1/1B5b w - - 0 1)

Schor, Laszlo

Magyar Sakkvilag, 1923

1B6/7K/R3N3/3k2p1/2p5/5q1n/6Q1/1B5b

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Bxe4#
    • 1...Sf4
      • 2.Qxg5#
    • 1...c3
      • 2.Qa2#
  • Tries
    • 1.Bg3?
      • threat
        • 2.Rd6#
      • 1...Qe4+
        • 2.Bxe4#
      • 1...c3
        • 2.Qa2#
      • 1...Sf4!
    • 1.Bf4?
      • threat
        • 2.Rd6#
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Sxf4
        • 2.Qxg5#
      • 1...c3
        • 2.Qa2#
      • 1...gxf4!
    • 1.Qxg5+?
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Sxg5+!
  • Keys
    • 1.Bh2!
      • threat
        • 2.Rd6#
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Sf4
        • 2.Qxg5#
      • 1...c3
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,N_GUARD::B(A),XQ(b)
    • S(c);N_GUARD::QAR(B),XP(f)
    • P(d);OGATEB::QAB(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(A),XQ(b)
        • P(d);OGATEB::QAB(B)
      • Refutation
        • S(c);
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • Q(b);CHECK,N_GUARD::B(A),XQ(b)
        • S(c);N_GUARD,XB(F)::QAR(B),XP(f)
        • P(d);OGATEB::QAB(B)
      • Refutation
        • P(f);XB(F)
    • Try
      • Q(B);CHECK,N_PINQ(b),XP(f)
      • Vars
        • Q(b);CHECK,N_GUARD,P_SPINQ(b)::QAR2(B),XQ(b)
      • Refutation
        • S(c);CHECK,XQ(B)
  • Actual
    • B(F);
    • Threat
      • R1(C)
    • Vars
      • Q(b);CHECK,N_GUARD::B(A),XQ(b)
      • S(c);N_GUARD::QAR(B),XP(f)
      • P(d);OGATEB::QAB(B)
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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).