MESON Chess Problem Database

Problem Display
PID: 263032 (B1n1q1R1/6r1/2rP1R2/5N1b/2PPPkPP/1p6/1K1nP3/2BQ4 w - - 0 1)

Pilchenko, Viacheslav Karlovich

4th HM., SuperProblem, 2018

B1n1q1R1/6r1/2rP1R2/5N1b/2PPPkPP/1p6/1K1nP3/2BQ4

#2

14 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.e3#
    • 1...Rc5
      • 2.e3#
    • 1...Ra6
      • 2.e3#
    • 1...Rb6
      • 2.e3#
    • 1...Rxd6
      • 2.e3#
    • 1...Rcc7
      • 2.e3#
  • Tries
    • 1.Bxd2+?
      • 1...Kxe4
        • 2.Qb1#
        • 2.Qh1#
      • 1...Kxg4!
    • 1.Qxd2+?
      • 1...Kxe4
        • 2.Sg3#
        • 2.Qe3#
        • 2.Qf4#
        • 2.Qd3#
      • 1...Kxg4!
  • Keys
    • 1.Qxb3!
      • threat
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kxg4
        • 2.Qg3#
      • 1...Qxe4
        • 2.Qg3#
      • 1...Bxg4
        • 2.Qe3#
      • 1...Rb6
        • 2.Sh6#
      • 1...Rb7
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(e);XP(E)::P(D)
    • R(e);::P(D)
    • R(e);XP(K)::P(D)
  • Tries
    • Try
      • B(A);CHECK,XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(f),XP(H)
    • Try
      • Q(B);CHECK,XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(f),XP(H)
  • Actual
    • Q(B);XP(b)
    • Threat
      • QAR1(B)
    • Vars
      • K(c);N_GUARD,N_SPINS(a),P-FLIGHT,P_SPINR(e),XP(G)::QAR1(B)
      • K(c);N_GUARD,N_SPINS(a),P-FLIGHT,P_SPINR(f),XP(H)::QAR1(B)
      • Q(h);SBLOCK,XP(G)::QAB1(B)
      • B(d);SBLOCK,XP(H)::QAB1(B)
      • R(e);P_PINQ(B)::R(L)+S(J)
      • R(f);P_PINQ(B)::R(L)+S(J)
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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).