MESON Chess Problem Database

Problem Display
PID: 175068 (3K4/8/3R4/5k2/3PN2n/3q3P/Q5P1/1B6 w - - 0 1)

Prikryl, Bohuzlav

2nd Prize, Illustracyja Polska, 1902

3K4/8/3R4/5k2/3PN2n/3q3P/Q5P1/1B6

#2

8 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qe2
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qc4
      • 2.Rf6#
    • 1...Qb5
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qa6
      • 2.Qf7#
    • 1...Qd1
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qd2
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qa3
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qb3
      • 2.Rf6#
    • 1...Qc3
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qe3
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qf3
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qg3
      • 2.Rf6#
      • 2.Qf7#
  • Tries
    • 1.Qa5+?
      • 1...Kxe4
        • 2.Qe5#
      • 1...Qb5
        • 2.Rf6#
      • 1...Kf4!
    • 1.g3?
      • threat
        • 2.Qd5#
        • 2.Qe6#
      • 1...Qxe4
        • 2.Qd5#
        • 2.Qa5#
      • 1...Qxg3
        • 2.Rf6#
        • 2.Qf7#
      • 1...Qxd4
        • 2.Qe6#
      • 1...Qc4
        • 2.Rf6#
      • 1...Qb5
        • 2.Rf6#
        • 2.Qe6#
        • 2.Qf7#
      • 1...Qb3
        • 2.Rf6#
      • 1...Sf3
        • 2.Qe6#
      • 1...Sg6
        • 2.Qe6#
      • 1...Kxe4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sg3#
      • 1...Kxe4
        • 2.Bxd3#
      • 1...Qxe4
        • 2.g4#
      • 1...Qxd2
        • 2.Rf6#
      • 1...Qxh3
        • 2.Qg5#
      • 1...Qxd4
        • 2.Qg5#
      • 1...Qe3
        • 2.Rf6#
      • 1...Qg3
        • 2.Sxg3#
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(a);::R1(G)
    • Q(a);::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P_SPINQ(a),S_FLIGHT,XS(F)::QAR1(B)
        • Q(a);P_SPINQ(a)::R1(G)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);P_PINR(G),XP(E)::QAB1(B)
        • Q(a);::R1(G)
        • S(b);::QAB1(B)
      • Refutation
        • K(c);P_SPINQ(a),S_FLIGHT,XS(F)
  • Actual
    • Q(B);
    • Threat
      • S(F)
    • Vars
      • K(c);OGATEB,P_SPINQ(a),S_FLIGHT,XS(F)::B(A),XQ(a)
      • Q(a);P_SPINQ(a),XS(F)::P(C)
      • Q(a);XQ(B)::R1(G)
      • Q(a);XP(D)::QAR1(B)
      • Q(a);P_PINR(G),XP(E)::QAR1(B)
      • Q(a);::R1(G)
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).