MESON Chess Problem Database

Problem Display
PID: 271350 (2B1n1NK/4R3/2P1Qpp1/4r1Bp/2P1knp1/1N1p2Rb/2r1p3/b7 w - - 0 1)

Murashev, Pavel Aleksandrovich

Slesarenko, Anatoly Vasilevich

Mosiashvili-75 JT (Kudesnik), 2023

2B1n1NK/4R3/2P1Qpp1/4r1Bp/2P1knp1/1N1p2Rb/2r1p3/b7

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sd6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sxf6#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Qxf4#
      • 1...Rxe7
        • 2.Sc5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Re6
        • 2.Sc5#
      • 1...Sg2
        • 2.Qxg6#
      • 1...Sd5
        • 2.Qxg6#
      • 1...Se6
        • 2.Re3#
      • 1...Rxc4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sc5#
      • 1...Rxc4
        • 2.Sd2#
      • 1...Sxd6
        • 2.Sxf6#
      • 1...Re6
        • 2.Qxf4#
      • 1...Se6
        • 2.Qxd3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::QAB1(F)
    • S(g);N_GUARD::QAB1(F),XS(g)
    • S(m);N_GUARD::S(I),XP(k)
  • Tries
    • Try
      • Q(F);XP(k)
      • Threat
        • QAR1(F),XS(g)
      • Vars
        • R(i);N_SPINR(i),P_PINQ(F),XR(G)::S(A)
        • S(m);XQ(F)::S(I),XS(m)
        • R(i);P_PINQ(F)::S(A)
        • S(g);N_GUARD::QAB(F),XP(l)
        • S(g);N_SPINR(i)::R1(B)
      • Refutation
        • R(b);XP(C)
  • Actual
    • Q(F);
    • Threat
      • S(A)
    • Vars
      • R(b);N_GUARD,XP(C)::S(A)
      • S(m);N_GUARD,XQ(F)::S(I),XP(k)
      • R(i);OGATE::QAR1(F),XS(g)
      • S(g);N_GUARD,N_SPINR(i)::QAB1(F),XP(d)
      • B(a);N_GUARD::QAR1(F),XB(a)
      • S(g);N_GUARD::QAB1(F),XS(g)
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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).