MESON Chess Problem Database

Problem Display
PID: 188288 (3Bb3/4N3/2ppp1R1/4k1p1/n3p1P1/1N2K1nq/7Q/8 w - - 0 1)

Marysko, Milos

Schweizerische Schachzeitung, 1969

3Bb3/4N3/2ppp1R1/4k1p1/n3p1P1/1N2K1nq/7Q/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Qh8#
    • 1...Qxg4
      • 2.Qh8#
    • 1...Qh5
      • 2.Qxg3#
    • 1...Qh6
      • 2.Qxg3#
    • 1...Qh7
      • 2.Qxg3#
    • 1...Qh8
      • 2.Qxg3#
      • 2.Qxh8#
    • 1...Sb2
      • 2.Qxb2#
    • 1...Sc5
      • 2.Qb2#
    • 1...Sb6
      • 2.Qb2#
    • 1...d5
      • 2.Bc7#
  • Tries
    • 1.Sxc6+?
      • 1...Bxc6
        • 2.Rxg5#
      • 1...Kd5!
    • 1.Bb6?
      • threat
        • 2.Bd4#
      • 1...Sxb6
        • 2.Qb2#
      • 1...d5
        • 2.Bc7#
      • 1...Sc5
        • 2.Qb2#
      • 1...c5!
    • 1.Qb2+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rxe6#
      • 1...Qxg4
        • 2.Qh8#
      • 1...Bxg6
        • 2.Sd7#
      • 1...Sxc5
        • 2.Qb2#
      • 1...dxc5
        • 2.Bc7#
      • 1...Qh6
        • 2.Qxg3#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Bf7
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(b);OGATE::QAB(A)
    • Q(b);OGATE,XP(D)::QAB(A)
    • Q(b);N_GUARD::QAB(A),XS(a)
    • S(c);N_GUARD::QAB(A),XS(c)
    • S(c);N_GUARD::QAB(A)
    • P(h);OGATEB::B(G)
  • Tries
    • Try
      • S(F);CHECK,XP(g)
      • Vars
        • B(j);XS(F)::R(E),XP(f)
      • Refutation
        • K(e);N_SPINS(a),P-FLIGHT
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • S(c);N_GUARD,XB(G)::QAB(A)
        • P(h);OGATEB::B(G)
        • S(c);N_GUARD::QAB(A)
      • Refutation
        • P(g);
    • Try
      • Q(A);CHECK,N_PINS(a)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB(A),XS(c)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • S(B);
    • Threat
      • R1(E),XP(i)
    • Vars
      • Q(b);OGATE,XP(D)::QAB(A)
      • B(j);N_GUARD,XR(E)::S(B)
      • S(c);N_GUARD,XS(B)::QAB(A)
      • P(h);OGATEB,XS(B)::B(G)
      • Q(b);N_GUARD::QAB(A),XS(a)
      • B(j);N_GUARD::S(B),XB(j)
      • B(j);N_GUARD::S(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).