MESON Chess Problem Database

Problem Display
PID: 70710 (1b2nrB1/8/1p3p1r/1N2P1pP/4k1P1/1p1p2RN/2p3nK/2Q5 w - - 0 1)

Prete, Rodolfo

Il Due Mosse, 1958

1b2nrB1/8/1p3p1r/1N2P1pP/4k1P1/1p1p2RN/2p3nK/2Q5

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sf2#
    • 1...Se1
      • 2.Re3#
      • 2.Qe3#
      • 2.Qxe1#
    • 1...Se3
      • 2.Rxe3#
      • 2.Qxe3#
    • 1...Sf4
      • 2.Re3#
      • 2.Qe3#
    • 1...Sh4
      • 2.Re3#
      • 2.Qe3#
      • 2.Qe1#
    • 1...fxe5
      • 2.Sxg5#
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qd4#
      • 1...Bxe5
        • 2.Qa8#
      • 1...fxe5
        • 2.Qa4#
      • 1...b2!
    • 1.Qe1+?
      • 1...Se3
        • 2.Rxe3#
        • 2.Qxe3#
      • 1...Sxe1!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Bxe5
        • 2.Qxg2#
      • 1...fxe5
        • 2.Sc3#
      • 1...Se3
        • 2.Rxe3#
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(j);P_PINR(C),SBLOCK,XP(G)::S(D)
    • P(h);N_GUARD,SBLOCK,XP(G)::S(D),XP(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(j);P_PINR(C),SBLOCK,XP(G)::QAB(A)
        • P(h);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);P-FLIGHT,XP(G)::QAB1(A)
      • B(j);P_PINR(C),SBLOCK,XP(G)::QAB(A),XS(b)
      • P(h);SBLOCK,XP(G)::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).