MESON Chess Problem Database

Problem Display
PID: 31201 (3Q4/8/6K1/6B1/2p3B1/N7/1n1Pp3/2k5 w - - 0 1)

Trcala, Stanislav

Western Daily Mercury, 1907

3Q4/8/6K1/6B1/2p3B1/N7/1n1Pp3/2k5

#2

6 + 4

1829 The Theory of Pawn Promotion 1912
3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...e1S
      • 2.d3#
      • 2.d4#
    • 1...c3
      • 2.dxc3#
  • Tries
    • 1.Qf6?
      • 1...Kd1
        • 2.Qf1#
      • 1...e1Q
        • 2.Qc3#
      • 1...e1S
        • 2.d3#
        • 2.d4#
      • 1...e1B
        • 2.Qc3#
      • 1...e1R
        • 2.Qc3#
      • 1...Sd1
        • 2.Qa1#
      • 1...Sd3
        • 2.Qa1#
      • 1...Sa4
        • 2.Qa1#
      • 1...c3!
    • 1.Qh8?
      • 1...Kd1
        • 2.Qh1#
      • 1...e1Q
        • 2.Qc3#
      • 1...e1S
        • 2.d3#
        • 2.d4#
      • 1...e1B
        • 2.Qc3#
      • 1...e1R
        • 2.Qc3#
      • 1...Sd1
        • 2.Qa1#
      • 1...Sd3
        • 2.Qa1#
      • 1...Sa4
        • 2.Qa1#
      • 1...c3!
  • Keys
    • 1.Qd4!
      • 1...Kd1
        • 2.Qg1#
      • 1...e1Q
        • 2.Qc3#
      • 1...e1S
        • 2.d3#
      • 1...e1B
        • 2.Qc3#
      • 1...e1R
        • 2.Qc3#
      • 1...Sd1
        • 2.Qa1#
      • 1...Sd3
        • 2.Qa1#
      • 1...Sa4
        • 2.Qa1#
      • 1...c3
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATE::B(D)+P(A),XP(d)
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(F)
        • P(c);::QAR2(F)
        • S(b);OGATE,SBLOCK::QAR2(F)
        • S(b);OGATE::QAR2(F)
      • Refutation
        • P(d);
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR(F)
        • P(c);::QAR2(F)
        • S(b);OGATE,SBLOCK::QAR2(F)
        • S(b);OGATE::QAR2(F)
      • Refutation
        • P(d);
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(c)::QAR(F)
      • P(c);::QAR2(F)
      • P(c);::B(D)+P(A)
      • S(b);OGATE,SBLOCK::QAR2(F)
      • S(b);OGATE::QAR2(F)
      • P(d);OGATE::B(D)+P(A),XP(d)
HTML5 logo

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).