MESON Chess Problem Database

Problem Display
PID: 206176 (1B2K2n/2N5/3P1pn1/r3kPNR/8/1pPQ1pP1/8/3br1b1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Probleemblad, 2018

1B2K2n/2N5/3P1pn1/r3kPNR/8/1pPQ1pP1/8/3br1b1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Sxf3#
    • 1...Ra1
      • 2.Qd5#
    • 1...Ra2
      • 2.Qd5#
    • 1...Ra3
      • 2.Qd5#
    • 1...Ra4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Ra6
      • 2.Qd5#
    • 1...Ra7
      • 2.Qd5#
    • 1...Ra8
      • 2.Qd5#
    • 1...Bc2
      • 2.Sxf3#
    • 1...Bc5
      • 2.Qd5#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Qe4+?
      • 1...Kxd6
        • 2.Sa6#
        • 2.Sce6#
      • 1...Rxe4!
    • 1.Qd4+?
      • 1...Kxf5+
        • 2.Sge6#
      • 1...Bxd4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe6#
      • 1...Kxf5+
        • 2.Sge6#
      • 1...Kxd6+
        • 2.Sce6#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sf8
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • R(b);S_CUTB(a)::S(E),XP(e)
    • R(f);N_GUARD::QAR1(B)
    • R(f);N_GUARD::QAR1(B),XR(f)
    • R(f);N_GUARD,P_PINB(I)::QAR1(B)
    • B(a);N_GUARD::S(E),XP(e)
    • B(c);S_CUTR(f)::QAR1(B)
    • S(j);N_GUARD::S(E),XS(j)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • R(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);CHECK,P-FLIGHT,XP(D)::R(F)+S(E)
      • Refutation
        • B(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(g);CHECK,P-FLIGHT,XP(D)::R(F)+S(E)
      • K(g);CHECK,S_FLIGHT,XP(G)::B(I)+S(H)
      • R(f);N_GUARD::QAR1(B),XR(f)
      • S(i);N_GUARD::QAB1(B),XS(i)
      • S(i);N_GUARD::QAB1(B)
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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).