MESON Chess Problem Database

Problem Display
PID: 265830 (4R2n/3pp3/2p1r1pN/b1P1k1PP/1r2p3/1p2K2B/8/3Q4 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

StrateGems, 2022

4R2n/3pp3/2p1r1pN/b1P1k1PP/1r2p3/1p2K2B/8/3Q4

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxd4#
    • 1...Rb5
      • 2.Qd4#
    • 1...Rb6
      • 2.Qd4#
    • 1...Rb7
      • 2.Qd4#
    • 1...Rb8
      • 2.Qd4#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Rxe7?
      • threat
        • 2.Qd6#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sf7
        • 2.Sxf7#
      • 1...d5
        • 2.Rxe6#
      • 1...d6
        • 2.Rxe6#
        • 2.Qxd6#
      • 1...Bc7!
    • 1.Rxh8?
      • threat
        • 2.Sf7#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rf6!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qxe6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::QAB1(A),XR(b)
    • R(b);N_GUARD::QAB1(A)
    • R(g);N_GUARD,P_SPINP(j)::QAB1(A),XR(g)
    • S(k);N_GUARD::S(G),XS(k)
  • Tries
    • Try
      • R(H);P_PINR(g),XP(j)
      • Threat
        • QAB1(A)
      • Vars
        • R(b);N_GUARD::QAB1(A),XR(b)
        • S(k);N_GUARD::S(G),XS(k)
        • P(i);N_GUARD::R1(H),XR(g)
      • Refutation
        • B(d);
    • Try
      • R(H);XS(k)
      • Threat
        • S(G)
      • Vars
        • R(b);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • R(g);
  • Actual
    • Q(A);XP(i)
    • Threat
      • QAR1(A),XR(g)
    • Vars
      • R(g);N_GUARD,P_SPINP(j)::QAB1(A),XR(g)
      • R(g);P_SPINP(j)::S(G)
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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).