MESON Chess Problem Database

Problem Display
PID: 169948 (5n2/4qp2/2pp1p1K/5N2/R3Pk2/2Q3bP/3P2b1/2B4n w - - 0 1)

Morra, Juan Carlos

Enroque!!, 1945

5n2/4qp2/2pp1p1K/5N2/R3Pk2/2Q3bP/3P2b1/2B4n

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qe3#
    • 1...Bf3
      • 2.d3#
    • 1...Sf2
      • 2.Qxg3#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Sxg2#
        • 2.d3#
      • 1...Qxe4
        • 2.Qxf6#
        • 2.d3#
      • 1...Bxh3
        • 2.e5#
      • 1...Bxe4
        • 2.d3#
        • 2.d4#
      • 1...Qa7
        • 2.Sxg2#
        • 2.Qxf6#
      • 1...Bf1
        • 2.d3#
      • 1...Bf3
        • 2.d3#
      • 1...Be1
        • 2.Sxg2#
      • 1...Bf2
        • 2.Sxg2#
      • 1...Bh2
        • 2.Sxg2#
      • 1...Bxh4!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Sh5#
      • 1...Qxe4
        • 2.Qxf6#
      • 1...Bxh3
        • 2.e5#
      • 1...Bxe4
        • 2.d4#
      • 1...Qe5
        • 2.Qe3#
      • 1...Bf3
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);SBLOCK::QAB1(C)
    • B(b);SBLOCK::B(A)+P(B)
    • S(a);N_GUARD::QAB1(C),XB(c)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);N_GUARD,XP(D)::R(E)+P(F)
        • B(b);::B(A)+P(B)
        • B(c);::S(G),XB(b)
      • Refutation
        • B(c);XS(G)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • Q(h);N_GUARD,P_SPINQ(h),XP(F)::QAR2(C),XP(g)
      • B(b);N_GUARD,XP(D)::R(E)+P(F)
      • B(b);P_SPINB(b),SBLOCK,XP(F)::B(A)+P(B)
      • Q(h);SBLOCK::QAB1(C)
      • B(b);SBLOCK::B(A)+P(B)
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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).