MESON Chess Problem Database

Problem Display
PID: 264135 (3b4/2p4Q/2P2np1/K1k5/pN6/r1r5/1N5B/3R1b2 w - - 0 1)

Beszczynski, Jan

HM., Tijdschrift vd KNSB, 1955

3b4/2p4Q/2P2np1/K1k5/pN6/r1r5/1N5B/3R1b2

#2

7 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be7
      • 2.Qxe7#
    • 1...Se4
      • 2.Rd5#
    • 1...Sg4
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sh5
      • 2.Rd5#
    • 1...Sd7
      • 2.Rd5#
    • 1...Sxh7
      • 2.Rd5#
    • 1...Se8
      • 2.Rd5#
    • 1...Sg8
      • 2.Rd5#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Qd4#
      • 1...Rd3
        • 2.Qc4#
      • 1...Bd3
        • 2.Qf2#
      • 1...Se4
        • 2.Rd5#
      • 1...Sg4
        • 2.Rd5#
      • 1...Rc4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qd4#
      • 1...Sxd7
        • 2.Rd5#
      • 1...Rd3
        • 2.Sa6#
      • 1...Rc4
        • 2.Sa6#
      • 1...Bd3
        • 2.Bg1#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • B(i);N_GUARD::QAB(G),XB(i)
    • S(f);N_GUARD::R1(A)
    • S(f);N_GUARD::R1(A),XS(f)
    • S(f);N_GUARD,XQ(G)::R1(A)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • R(c);N_GUARD,S_CUTB(a)::QAR1(G)
        • B(a);S_CUTR(c)::QAB(G)
        • S(f);N_GUARD::R1(A)
      • Refutation
        • R(c);
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(f);N_GUARD,XQ(G)::R1(A)
      • R(c);S_CUTB(a)::S(D)
      • B(a);S_CUTR(c)::B(C)
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).