MESON Chess Problem Database

Problem Display
PID: 194000 (8/5K1p/4ppR1/7k/7B/1p6/1r4P1/1Q6 w - - 0 1)

Svoboda, Frantisek

Pravo lidu, 1917

8/5K1p/4ppR1/7k/7B/1p6/1r4P1/1Q6

#2

5 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh4
      • 2.Qh1#
  • Tries
    • 1.Bxf6?
      • threat
        • 2.Qh1#
        • 2.g4#
      • 1...Rxb1
        • 2.g4#
      • 1...hxg6
        • 2.Qxg6#
      • 1...Rxg2!
    • 1.Rh6+?
      • 1...Kg4
        • 2.Qe4#
      • 1...Kxh6!
    • 1.Qf5+?
      • 1...Kxh4
        • 2.Rg4#
        • 2.Qh3#
        • 2.Qg4#
        • 2.g3#
      • 1...exf5!
    • 1.Qd1+?
      • 1...Kxh4
        • 2.Qg4#
        • 2.Qh1#
      • 1...Re2!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qh1#
        • 2.g4#
      • 1...Rxb1
        • 2.g4#
      • 1...Rxf2
        • 2.Qh1#
      • 1...hxg6
        • 2.Qxg6#
      • 1...f5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(c);OGATEB,P-FLIGHT,XB(C)::QAR(A)
  • Tries
    • Try
      • B(C);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XQ(A)::P(B)
        • P(f);OGATE,XR(D)::QAB1(A),XP(f)
      • Refutation
        • R(a);XP(B)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • B(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);XQ(A)::P(B)
      • R(a);XB(C)::QAR(A)
      • P(f);OGATE,XR(D)::QAB1(A),XP(f)
      • P(e);::QAR(A)
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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).