MESON Chess Problem Database

Problem Display
PID: 93834 (3N1K2/8/2P3R1/1Q1qkp2/1P2r3/2p1p1P1/8/8 w - - 0 1)

Marik, Josef V

Ceske listy sachove, 1899

3N1K2/8/2P3R1/1Q1qkp2/1P2r3/2p1p1P1/8/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5+
      • 2.Qxc5#
    • 1...Rd4
      • 2.Re6#
  • Tries
    • 1.Qb8+?
      • 1...Qd6+
        • 2.Qxd6#
      • 1...Kd4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qxd5#
      • 1...Kd4
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Qxb5
        • 2.Sf7#
      • 1...Qc5
        • 2.Sf7#
        • 2.Qxc5#
      • 1...Rd4
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(d);CHECK,OGATEB::QAR2(C),XQ(d)
    • R(c);SBLOCK::R1(E)
  • Tries
    • Try
      • Q(C);CHECK,N_PINQ(d)
      • Vars
        • Q(d);CHECK,N_GUARD,P_SPINQ(d)::QAB1(C),XQ(d)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAR1(C),XQ(d)
    • Vars
      • K(e);N_SPINQ(d),OGATEB,S_FLIGHT,XR(E)::QAB(C)
      • Q(d);N_SPINQ(d),XQ(C)::S(F)
      • R(c);SBLOCK::R1(E)
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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).