MESON Chess Problem Database

Problem Display
PID: 6881 (B2R3B/4p3/r1q1N1K1/Rn3n1Q/4kp1p/6p1/2PPN1b1/b7 w - - 0 1)

Segers, Marcel

2nd Prize, Magyar Sakkvilag, 1934

B2R3B/4p3/r1q1N1K1/Rn3n1Q/4kp1p/6p1/2PPN1b1/b7

#2

10 + 11

3098 FIDE Album (1914-1944) (I) 1971
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxd5#
    • 1...Rxa5
      • 2.Bxc6#
    • 1...Ra7
      • 2.Bxc6#
    • 1...Bf3
      • 2.Qxf5#
    • 1...Sc3
      • 2.Re5#
    • 1...Sbd4
      • 2.Re5#
    • 1...Sbd6
      • 2.Sg5#
    • 1...Se3
      • 2.d3#
    • 1...Sfd6
      • 2.Sc5#
    • 1...f3
      • 2.Qg4#
      • 2.Qxf5#
  • Tries
    • 1.Sc3+?
      • 1...Sxc3
        • 2.Re5#
      • 1...Bxc3!
  • Keys
    • 1.Sg1!
      • threat
        • 2.Qxf5#
      • 1...Bh3
        • 2.Qf3#
      • 1...Sbd4
        • 2.Re5#
      • 1...Sbd6
        • 2.Sg5#
      • 1...Se3
        • 2.d3#
      • 1...Sfd4
        • 2.Qe5#
      • 1...Sfd6
        • 2.Sc5#
      • 1...Sh6
        • 2.Qe2#
      • 1...Sg7
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(j);OGATE::B(H),XQ(j)
    • R(i);N_GUARD,XR(D)::B(H),XQ(j)
    • R(i);N_GUARD::B(H),XQ(j)
    • B(b);SBLOCK::QAB1(E),XS(h)
    • S(g);OGATE::R1(D)
    • S(g);N_PINS(F)::S(F)
    • S(h);SBLOCK::P(B)
    • S(h);N_PINS(F)::S(F)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(g);OGATE,XS(C)::R1(D)
      • Refutation
        • B(a);XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB1(E),XS(h)
    • Vars
      • B(b);N_GUARD::QAB1(E)
      • S(g);OGATE::R1(D)
      • S(g);N_PINS(F)::S(F)
      • S(h);SBLOCK::P(B)
      • S(h);OGATE::QAR1(E)
      • S(h);N_PINS(F)::S(F)
      • S(h);N_GUARD::QAR2(E)
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).