MESON Chess Problem Database

Problem Display
PID: 268878 (b2br1N1/2r5/3Q4/6P1/1Rn1kppN/1K6/2PB1P2/3Bn3 w - - 0 1)

Stojnic, Dragan

Problemas, 2020

b2br1N1/2r5/3Q4/6P1/1Rn1kppN/1K6/2PB1P2/3Bn3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rxc4#
    • 1...Rd7
      • 2.Rxc4#
    • 1...Rce7
      • 2.Sf6#
      • 2.Rxc4#
    • 1...Rf7
      • 2.Rxc4#
    • 1...Rg7
      • 2.Rxc4#
    • 1...Rh7
      • 2.Rxc4#
    • 1...Ree7
      • 2.Sf6#
    • 1...Bd5
      • 2.Qxf4#
    • 1...Bc6
      • 2.Rxc4#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Sxc2
      • 2.Bxc2#
    • 1...Sd3
      • 2.cxd3#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qd4#
      • 1...Bf6+
        • 2.Sxf6#
      • 1...Sxc2
        • 2.Bxc2#
      • 1...Rd7
        • 2.Rxc4#
      • 1...Bd5
        • 2.Qxf4#
      • 1...Sf3!
    • 1.c3?
      • threat
        • 2.Qd4#
      • 1...Sf3
        • 2.Bc2#
      • 1...Rd7
        • 2.Rxc4#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Sc2
        • 2.Bxc2#
      • 1...Bd5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qd4#
      • 1...Sxc2
        • 2.Bxc2#
      • 1...Rd7
        • 2.Rxc4#
      • 1...Bd5
        • 2.Qg6#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Sf3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(f);N_GUARD::R(F),XS(b)
    • R(i);S_CUTB(h)::S(J)
    • B(g);SBLOCK::QAR1(I),XP(d)
    • B(g);S_CUTR(f)::R(F),XS(b)
    • B(h);N_GUARD::S(J),XB(h)
    • S(a);OGATE,XP(B)::B(A),XS(a)
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAR1(I)
      • Vars
        • B(h);CHECK,N_GUARD::S(J),XB(h)
        • S(a);OGATE,XP(B)::B(A),XS(a)
        • R(f);N_GUARD::R(F),XS(b)
        • B(g);SBLOCK::QAR1(I),XP(d)
      • Refutation
        • S(a);
    • Try
      • P(B);
      • Threat
        • QAR1(I)
      • Vars
        • S(a);N_GUARD::B(A)
        • R(f);N_GUARD::R(F),XS(b)
        • B(h);N_GUARD::S(J),XB(h)
        • S(a);N_GUARD::B(A),XS(a)
      • Refutation
        • B(g);
  • Actual
    • B(C);
    • Threat
      • QAR1(I)
    • Vars
      • S(a);OGATE,XP(B)::B(A),XS(a)
      • R(f);N_GUARD::R(F),XS(b)
      • B(g);SBLOCK::QAB(I)
      • B(h);N_GUARD::S(J),XB(h)
      • S(a);N_GUARD::QAB1(I)
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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).