MESON Chess Problem Database

Problem Display
PID: 278124 (1K1n4/4p3/2kN4/3N4/1P6/2r4B/6QB/3R4 w - - 0 1)

Cioflanca, Mihalu

Sachova skladba, 2023

1K1n4/4p3/2kN4/3N4/1P6/2r4B/6QB/3R4

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Rxc1#
    • 1...Rc2
      • 2.Qxc2#
  • Tries
    • 1.Sc7+?
      • 1...Kb6
        • 2.Sc8#
      • 1...Rf3!
    • 1.Qf1?
      • threat
        • 2.Qb5#
        • 2.Qa6#
      • 1...Rxh3
        • 2.Qb5#
      • 1...exd6
        • 2.Qa6#
      • 1...Rg3
        • 2.Qa6#
      • 1...Se6
        • 2.Qb5#
      • 1...e5
        • 2.Qa6#
      • 1...e6
        • 2.Qb5#
      • 1...Ra3
        • 2.Qc4#
        • 2.Qb5#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Rc5
        • 2.Qa6#
      • 1...Rd3!
    • 1.Qe2?
      • threat
        • 2.Qb5#
        • 2.Qa6#
      • 1...Rxh3
        • 2.Qb5#
      • 1...exd6
        • 2.Qa6#
        • 2.Qe8#
      • 1...Rg3
        • 2.Qa6#
      • 1...Se6
        • 2.Qb5#
      • 1...e5
        • 2.Qa6#
      • 1...e6
        • 2.Qb5#
      • 1...Ra3
        • 2.Qc4#
        • 2.Qb5#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Rc5
        • 2.Qa6#
      • 1...Rd3!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qa4#
        • 2.Qa6#
      • 1...Rxh3
        • 2.Qa4#
      • 1...Rg3
        • 2.Qa6#
      • 1...Se6
        • 2.Qa4#
      • 1...e5
        • 2.Qa6#
      • 1...e6
        • 2.Qa4#
      • 1...Ra3
        • 2.Qc4#
      • 1...Rd3
        • 2.Qc4#
      • 1...Rc5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATEB::R(A),XR(a)
    • R(a);OGATEB::QAR(B),XR(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,S_CUTR(a)::S(G)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(D)::QAB1(B)
        • P(c);XS(G)::QAR2(B)
        • R(a);::QAR2(B)
        • S(d);::QAB1(B)
        • P(c);::QAR2(B)
        • P(c);::QAB1(B)
        • R(a);N_GUARD::QAR2(B),XR(a)
      • Refutation
        • R(a);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(D)::QAB1(B)
        • R(a);::QAR2(B)
        • S(d);::QAB1(B)
        • P(c);::QAR2(B)
        • P(c);::QAB1(B)
        • R(a);N_GUARD::QAR2(B),XR(a)
      • Refutation
        • R(a);
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);XB(D)::QAB(B)
      • R(a);::QAR2(B)
      • S(d);::QAB(B)
      • P(c);::QAR2(B)
      • P(c);::QAB(B)
      • R(a);N_GUARD::QAR2(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).