MESON Chess Problem Database

Problem Display
PID: 203806 (2b1R3/2Pp4/4N3/1P1kP2Q/R4pK1/B7/4n2p/5Bn1 w - - 0 1)

Puig Ambros, Estanislao

The Problemist, 1954

2b1R3/2Pp4/4N3/1P1kP2Q/R4pK1/B7/4n2p/5Bn1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Sxf4#
      • 2.Rd4#
    • 1...Sc3
      • 2.Sxf4#
      • 2.Rd4#
    • 1...Sg3
      • 2.Sxf4#
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...d6
      • 2.exd6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qf7#
      • 1...Sd4
        • 2.Bc4#
      • 1...d6+!
    • 1.Sg7?
      • threat
        • 2.Qf7#
        • 2.e6#
      • 1...d6+
        • 2.e6#
      • 1...h1Q
        • 2.Qf7#
      • 1...h1R
        • 2.Qf7#
      • 1...Sf3
        • 2.Qf7#
      • 1...Sh3
        • 2.Qf7#
      • 1...Sg3
        • 2.Qf7#
      • 1...Sd4!
    • 1.Sd8?
      • threat
        • 2.Qf7#
        • 2.e6#
      • 1...d6+
        • 2.e6#
      • 1...h1Q
        • 2.Qf7#
      • 1...h1R
        • 2.Qf7#
      • 1...Sf3
        • 2.Qf7#
      • 1...Sh3
        • 2.Qf7#
      • 1...Sg3
        • 2.Qf7#
      • 1...Sd4!
    • 1.Sf8?
      • threat
        • 2.Qf7#
        • 2.e6#
      • 1...d6+
        • 2.e6#
      • 1...h1Q
        • 2.Qf7#
      • 1...h1R
        • 2.Qf7#
      • 1...Sf3
        • 2.Qf7#
      • 1...Sh3
        • 2.Qf7#
      • 1...Sg3
        • 2.Qf7#
      • 1...Sd4!
    • 1.Bg2+?
      • 1...Sf3
        • 2.Bxf3#
      • 1...f3!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qf7#
      • 1...d6+
        • 2.e6#
      • 1...Sd4
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R1(C),XS(b)
    • P(f);OGATE,P_PINS(H)::QAR(G)+P(F),XP(f)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB(G)
      • Vars
        • S(b);OGATE,SBLOCK::B(A)
      • Refutation
        • P(f);CHECK
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);CHECK::QAR(G)+P(F)
        • P(c);::QAB(G)
        • S(a);::QAB(G)
        • S(b);::QAB(G)
      • Refutation
        • S(b);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);CHECK::QAR(G)+P(F)
        • P(c);::QAB(G)
        • S(a);::QAB(G)
        • S(b);::QAB(G)
      • Refutation
        • S(b);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);CHECK::QAR(G)+P(F)
        • P(c);::QAB(G)
        • S(a);::QAB(G)
        • S(b);::QAB(G)
      • Refutation
        • S(b);
    • Try
      • B(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • S(H);
    • Threat
      • QAB(G)
    • Vars
      • P(f);CHECK,SBLOCK::QAR(G)+P(F)
      • S(b);OGATE,SBLOCK::B(A)
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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).