MESON Chess Problem Database

Problem Display
PID: 232867 (8/1pn1rp1Q/q1P5/p7/1P3R2/5N1K/3Bkpp1/R5b1 w - - 0 1)

Morra, Juan Carlos

Il Due Mosse, 1954

8/1pn1rp1Q/q1P5/p7/1P3R2/5N1K/3Bkpp1/R5b1

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
    • 1...Rd7
      • 2.Qe4#
    • 1...Se6
      • 2.Qe4#
  • Tries
    • 1.Re4+?
      • 1...Kxf3
        • 2.Qf5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Kd3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sd4#
      • 1...f1Q
        • 2.Bc1#
      • 1...f1S
        • 2.Sxg1#
      • 1...f1B
        • 2.Sxg1#
        • 2.Bc1#
      • 1...f1R
        • 2.Bc1#
      • 1...Qd3
        • 2.Qd1#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qb6
        • 2.Qc4#
      • 1...Qa7
        • 2.Qc4#
      • 1...Re3
        • 2.Bc3#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rd7
        • 2.Qe4#
      • 1...Sb5
        • 2.Qc4#
      • 1...Se6
        • 2.Qe4#

This is a version of 232864

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(i);N_GUARD::QAR2(H),XR(i)
    • R(i);N_GUARD::QAR2(H)
    • S(h);S_CUTR(i)::QAR2(H)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAR2(H)
        • R(i);OGATE,XR(F)::QAR2(H),XR(i)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • S(C)
    • Vars
      • P(c);SBLOCK::QAR(H)+B(B)
      • P(c);N_GUARD::S(C),XB(a)
      • Q(f);P_PINS(C),SBLOCK::QAB1(H)
      • Q(f);N_GUARD::QAB(H),XQ(f)
      • Q(f);N_GUARD::QAB(H)
      • R(i);P_PINS(C),SBLOCK::QAR(H)+B(B)
      • R(i);N_GUARD::QAR2(H),XR(i)
      • R(i);N_GUARD::QAR2(H)
      • S(h);S_CUTQ(f)::QAB(H)
      • S(h);S_CUTR(i)::QAR2(H)
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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).