MESON Chess Problem Database

Problem Display
PID: 232879 (B4Rb1/3p1qn1/7b/3R3r/2N2p1p/r1p1Pk1P/2Q1p3/4B2K w - - 0 1)

Morra, Juan Carlos

Il Due Mosse, 1957

B4Rb1/3p1qn1/7b/3R3r/2N2p1p/r1p1Pk1P/2Q1p3/4B2K

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...fxe3
      • 2.Rf5#
  • Tries
    • 1.Sd2+?
      • 1...Kxe3
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qe4#
      • 1...cxd2!
    • 1.Se5+?
      • 1...Kxe3
        • 2.Rd3#
        • 2.Qd3#
      • 1...Rxe5!
    • 1.Qxe2+?
      • 1...Ke4
        • 2.Sd6#
        • 2.Re5#
      • 1...Kxe2!
  • Keys
    • 1.Qd3!
      • threat
        • 2.e4#
      • 1...Qxd5
        • 2.exf4#
      • 1...Rxd5
        • 2.Se5#
      • 1...fxe3
        • 2.Rf5#
      • 1...Sf5
        • 2.Se5#
      • 1...c2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);P_SPINQ(j),XP(D)::B(H)+R(G),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • P(c);XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • R(g);XS(F)
    • Try
      • Q(C);CHECK,XP(a)
      • Refutation
        • K(d);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)+P(D)
    • Vars
      • Q(j);P_SPINP(e),P_SPINQ(j),XR(G)::QAR(C)+P(D),XP(e)
      • R(g);N_GUARD,P_SPINR(g),XR(G)::S(F)
      • P(e);P_SPINP(e),P_SPINQ(j),XP(D)::B(H)+R(G),DCHECK
      • S(k);S_CUTR(g)::S(F)
      • P(c);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).