MESON Chess Problem Database

Problem Display
PID: 254376 (2N5/n2Bp2r/6P1/1rpk2NR/1p2R3/P2pP3/1n6/1KQ5 w - - 0 1)

Palazon, Luis Gomez

Problemas, 2021

2N5/n2Bp2r/6P1/1rpk2NR/1p2R3/P2pP3/1n6/1KQ5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sc6
      • 2.Be6#
  • Tries
    • 1.Sxh7+?
      • 1...e5
        • 2.Sf6#
        • 2.Rexe5#
        • 2.Rhxe5#
      • 1...Kxe4!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Sxh7#
      • 1...cxd4!
    • 1.Qxb2?
      • threat
        • 2.Qe5#
      • 1...Sc6
        • 2.Be6#
      • 1...e5
        • 2.Qxe5#
      • 1...bxa3!
    • 1.Qc3?
      • threat
        • 2.Re5#
        • 2.Qe5#
      • 1...Sxc8
        • 2.Qe5#
      • 1...Sc4
        • 2.Qxd3#
        • 2.Qxc4#
      • 1...Sc6
        • 2.Be6#
      • 1...e5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...bxc3!
    • 1.Qxc5+?
      • 1...Kxc5
        • 2.Se6#
      • 1...Rxc5!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sxh7#
      • 1...Rxh5
        • 2.Sxe7#
      • 1...Rh6
        • 2.Sxe7#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Rg7
        • 2.Sf3#
        • 2.Sh3#
        • 2.Se4#
        • 2.Sf7#
        • 2.Sh7#
      • 1...Rh8
        • 2.Sh7#
        • 2.Sxe7#
      • 1...Sc4
        • 2.Qh1#
      • 1...Sc6
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(g);SBLOCK::B(I)
  • Tries
    • Try
      • S(F);CHECK,XR(i)
      • Refutation
        • K(f);S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(f);P-FLIGHT::R(G)+S(F),XR(i)
      • Refutation
        • P(e);XR(E)
    • Try
      • Q(B);XS(a)
      • Threat
        • QAR1(B)
      • Vars
        • S(g);SBLOCK::B(I)
        • P(h);::QAR1(B),XP(h)
      • Refutation
        • P(c);P_PINQ(B),XP(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);XS(J)::QAR1(B)
        • S(g);SBLOCK::B(I)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK,XP(e)
      • Vars
        • K(f);N_GUARD,P-FLIGHT,XQ(B)::R(G)+S(F),DCHECK
      • Refutation
        • R(d);XQ(B)
  • Actual
    • R(E);
    • Threat
      • R(G)+S(F),XR(i)
    • Vars
      • R(i);N_GUARD,XR(G)::S(J),XP(h)
      • R(i);N_GUARD::S(J),XP(h)
      • R(i);N_GUARD::R(G)+S(F),XR(i)
      • S(a);SBLOCK::QAB(B)
      • S(g);N_GUARD::B(I),XS(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).