MESON Chess Problem Database

Problem Display
PID: 287159 (q3r3/8/1b1n4/5ppN/1R4n1/1R2Pk1P/1pQPp1r1/1N2K2B w - - 0 1)

Subotic, Miroslav

2nd Prize, Problem Paradise, 2018

q3r3/8/1b1n4/5ppN/1R4n1/1R2Pk1P/1pQPp1r1/1N2K2B

#2

10 + 11

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qxf5#
    • 1...Sb5
      • 2.Qxf5#
    • 1...Sb7
      • 2.Qxf5#
    • 1...Sf7
      • 2.Qxf5#
    • 1...Sc8
      • 2.Qxf5#
  • Tries
    • 1.Rxg4?
      • threat
        • 2.Bxg2#
        • 2.Rg3#
      • 1...Se4
        • 2.Bxg2#
      • 1...f4
        • 2.Bxg2#
      • 1...fxg4!
    • 1.d4?
      • threat
        • 2.Sd2#
      • 1...Sc4
        • 2.Qxf5#
      • 1...Se4
        • 2.Qxe2#
      • 1...Qa1!
  • Keys
    • 1.d3!
      • threat
        • 2.Qxe2#
      • 1...Kxe3
        • 2.d4#
      • 1...Rxe3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(i);N_GUARD::QAR2(D),XP(f)
  • Tries
    • Try
      • R(I);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::B(C),XR(c)
        • P(f);::B(C),XR(c)
      • Refutation
        • P(f);XR(I)
    • Try
      • P(E);
      • Threat
        • S(A)
      • Vars
        • S(i);N_GUARD::QAR2(D),XP(f)
        • S(i);SBLOCK::QAB1(D),XP(b)
      • Refutation
        • Q(j);P_PINS(A)
  • Actual
    • P(E);
    • Threat
      • QAB1(D),XP(b)
    • Vars
      • K(d);N_SPINR(c),P-FLIGHT,XP(G)::R(F)+P(E)
      • R(k);SBLOCK,XP(G)::S(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).