MESON Chess Problem Database

Problem Display
PID: 228064 (1r3n2/b1R1R3/3N2QK/1B1pp1Pp/p2k1Pp1/p5r1/3Bb3/2N2q2 w - - 0 1)

Fomichev, Evgeny Vasilevich

Storozhenko, Ivan Ivanovich

3rd HM., 64 Shakhmatnoe obozrenie, 2020

1r3n2/b1R1R3/3N2QK/1B1pp1Pp/p2k1Pp1/p5r1/3Bb3/2N2q2

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Sxe2#
    • 1...Qg1
      • 2.Sxe2#
    • 1...Qh1
      • 2.Sxe2#
    • 1...Qxf4
      • 2.Sxe2#
    • 1...exf4
      • 2.Sf5#
      • 2.Qf6#
      • 2.Qg7#
    • 1...e4
      • 2.Sf5#
      • 2.Qf6#
      • 2.Qg7#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Sf5#
      • 1...Bd3
        • 2.Bc3#
      • 1...Qxf4!
    • 1.Qb1?
      • threat
        • 2.Sf5#
      • 1...Qxf4
        • 2.Sxe2#
      • 1...Rd3
        • 2.Qb4#
      • 1...Bd3
        • 2.Qa1#
      • 1...Rb6!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sf5#
      • 1...Qxf4
        • 2.Sxe2#
      • 1...Rd3
        • 2.Qxa4#
      • 1...Rb6
        • 2.Qc5#
      • 1...Bd3
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::S(A),XB(b)
    • Q(a);N_GUARD,P_PINP(E),XP(C)::S(A),XB(b)
  • Tries
    • Try
      • R(J);XP(i)
      • Threat
        • S(F)
      • Vars
        • B(b);S_CUTR(d)::B(B)
      • Refutation
        • Q(a);P_PINP(E),XP(C)
    • Try
      • Q(G);
      • Threat
        • S(F)
      • Vars
        • Q(a);N_GUARD,P_PINP(E),XP(C)::S(A),XB(b)
        • R(d);S_CUTB(b)::QAR2(G)
        • B(b);S_CUTR(d)::QAB(G)
      • Refutation
        • R(l);P_PINS(F)
  • Actual
    • Q(G);
    • Threat
      • S(F)
    • Vars
      • Q(a);N_GUARD,P_PINP(E),XP(C)::S(A),XB(b)
      • R(d);S_CUTB(b)::QAR(G),XP(e)
      • R(l);P_PINS(F),S_CUTB(k)::QAB1(G)
      • B(b);S_CUTR(d)::QAB1(G)
HTML5 logo

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).