MESON Chess Problem Database

Problem Display
PID: 194738 (B1R5/6p1/R2Pn1P1/1p3pP1/1p1k1ppN/3Pp3/1K2P3/2Q3B1 w - - 0 1)

Uris, Miguel

Best Problems, 2019

B1R5/6p1/R2Pn1P1/1p3pP1/1p1k1ppN/3Pp3/1K2P3/2Q3B1

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sxg5
      • 2.Qc5#
    • 1...Sd8
      • 2.Qc5#
    • 1...Sf8
      • 2.Qc5#
    • 1...b3
      • 2.Qc3#
    • 1...f3
      • 2.Qxe3#
    • 1...g3
      • 2.Sf3#
  • Tries
    • 1.Bh2?
      • 1...Ke5
        • 2.Qxe3#
      • 1...Sxg5
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...b3
        • 2.Qc3#
      • 1...f3
        • 2.Sxf5#
      • 1...g3
        • 2.Sf3#
      • 1...Sc7!
    • 1.Rc5?
      • threat
        • 2.Sxf5#
        • 2.Rd5#
      • 1...Sc7
        • 2.Sxf5#
      • 1...Sxc5!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qd5#
      • 1...bxc4!
    • 1.Qc6?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Sc7!
  • Keys
    • 1.Re8!
      • 1...Ke5
        • 2.Qc5#
      • 1...Sxg5
        • 2.Sxf5#
      • 1...Sc7
        • 2.Sxf5#
      • 1...Sc5
        • 2.Sxf5#
      • 1...Sd8
        • 2.Sxf5#
      • 1...Sf8
        • 2.Sxf5#
      • 1...b3
        • 2.Qc3#
      • 1...f3
        • 2.Qxe3#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::QAB1(A),XS(h)
    • S(h);N_GUARD,XP(G)::QAB1(A)
    • S(h);N_GUARD::QAB1(A)
    • P(b);N_GUARD::QAB1(A)
    • P(d);N_GUARD::QAB1(A),XP(a)
    • P(e);N_GUARD::S(F)
  • Tries
    • Try
      • B(B);N_PINP(a)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT::QAR2(A),XP(a)
        • S(h);N_GUARD,XP(G)::QAB1(A)
        • S(h);N_GUARD::QAB1(A),XS(h)
        • S(h);N_GUARD::QAB1(A)
        • P(b);N_GUARD::QAB1(A)
        • P(d);::S(F),XP(g)
        • P(e);N_GUARD::S(F)
      • Refutation
        • S(h);
    • Try
      • R(L);
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::S(F),XP(g)
      • Refutation
        • S(h);XR(L)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::QAR1(A)
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::QAR1(A)
      • Refutation
        • S(h);
  • Actual
    • R(L);
    • Vars
      • K(c);N_SPINP(a),P_SPINS(h),S_FLIGHT::QAR2(A)
      • S(h);XP(G)::S(F),XP(g)
      • S(h);::S(F),XP(g)
      • P(b);N_GUARD::QAB1(A)
      • P(d);N_GUARD::QAB1(A),XP(a)
      • P(e);N_GUARD::S(F)
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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).