MESON Chess Problem Database

Problem Display
PID: 266647 (1B2R3/r1rP2NK/8/2P1PB2/1P1k4/1Qpp1P2/2pppnN1/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Kopyl, Valery Volodimirovich

1st HM., Problem-Forum, 2010

1B2R3/r1rP2NK/8/2P1PB2/1P1k4/1Qpp1P2/2pppnN1/8

#2

12 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Se6#
    • 1...Rb7
      • 2.Se6#
    • 1...Rc8
      • 2.Se6#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Qd5#
      • 1...Sxd3
        • 2.Sf5#
      • 1...Rxc5!
    • 1.Be4?
      • threat
        • 2.Sf5#
        • 2.Qd5#
      • 1...Rxc5
        • 2.Sf5#
        • 2.Se6#
      • 1...Sxe4
        • 2.Sf5#
      • 1...Rxd7!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qxc3#
      • 1...Rxc5
        • 2.Sf5#
      • 1...Rxd7
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(i);XP(E)::S(I)
    • R(i);::S(I)
  • Tries
    • Try
      • B(G);XP(f)
      • Threat
        • QAR1(B)
      • Vars
        • K(g);N_GUARD,P-FLIGHT,P_SPINP(e),XB(G)::QAR2(B)
        • S(d);SBLOCK,XB(G)::S(I)
      • Refutation
        • R(i);XP(E)
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XB(G)::S(I)
      • Refutation
        • R(i);P_PINS(I),XP(H)
  • Actual
    • B(G);
    • Threat
      • QAR1(B)
    • Vars
      • K(g);N_GUARD,P_SPINR(i),S_FLIGHT,XP(F)::QAB(B),XP(e)
      • R(i);XP(E)::S(I)
      • R(i);P_PINS(I),XP(H)::QAR1(B)
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).