MESON Chess Problem Database

Problem Display
PID: 71769 (3K1Q2/2p5/2BR4/B7/qNp2Nb1/4k3/3npnPb/4R3 w - - 0 1)

Levman, Semyon Semyonovich

Il Problema, 1934

3K1Q2/2p5/2BR4/B7/qNp2Nb1/4k3/3npnPb/4R3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Sxc2#
    • 1...Qb5
      • 2.Sc2#
    • 1...Qa1
      • 2.Sc2#
    • 1...Qa3
      • 2.Sc2#
    • 1...Qxa5
      • 2.Sc2#
    • 1...Bh3
      • 2.Rxe2#
    • 1...Be6
      • 2.Rxe2#
    • 1...Bd7
      • 2.Rxe2#
    • 1...Bc8
      • 2.Rxe2#
    • 1...Sb3
      • 2.Sc2#
    • 1...Sf3
      • 2.Rxe2#
    • 1...cxd6
      • 2.Bb6#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd4#
      • 1...cxd6
        • 2.Bb6#
      • 1...Sfe4
        • 2.Sfd5#
      • 1...Qa1
        • 2.Sc2#
      • 1...Sb3
        • 2.Sc2#
      • 1...Sf3
        • 2.Rxe2#
      • 1...Sde4
        • 2.Sbd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(f);N_GUARD::S(C),XQ(f)
    • Q(f);N_GUARD::S(C)
    • Q(f);N_GUARD,XB(E)::S(C)
    • B(h);N_GUARD::R1(A),XP(b)
    • S(a);S_CUTQ(f)::S(C)
    • S(a);S_CUTB(h)::R1(A),XP(b)
    • P(i);N_GUARD,XR(G)::B(E)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • P(i);N_GUARD,XR(G)::B(E)
      • S(c);SBLOCK::S(D)
      • Q(f);N_GUARD::S(C)
      • S(a);S_CUTQ(f)::S(C)
      • S(a);S_CUTB(h)::R1(A),XP(b)
      • S(a);SBLOCK::S(C)
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).