MESON Chess Problem Database

Problem Display
PID: 92082 (8/2qrB1p1/8/Nnb2R2/Qn1k1pK1/2rP4/3P2Bp/4N3 w - - 0 1)

Wielgos, Oskar

Deutsche Schachblatter, 1966

8/2qrB1p1/8/Nnb2R2/Qn1k1pK1/2rP4/3P2Bp/4N3

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sc6#
    • 1...Qb8
      • 2.Sc6#
    • 1...Qd8
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qa7
      • 2.Sc6#
    • 1...Rc1
      • 2.Sb3#
    • 1...Rc2
      • 2.Sb3#
    • 1...Rb3
      • 2.Sxb3#
    • 1...Rxd3
      • 2.Sc2#
    • 1...Rc4
      • 2.Sb3#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Rxe7
      • 2.Rd5#
    • 1...Bd6
      • 2.Rd5#
    • 1...Sd6
      • 2.Rd5#
  • Tries
    • 1.Bh4?
      • threat
        • 2.Bf2#
      • 1...Rxd3
        • 2.Sc2#
      • 1...Qe5
        • 2.Sc6#
      • 1...Re7
        • 2.Rd5#
      • 1...h1S!
    • 1.Bxc5+?
      • 1...Rxc5
        • 2.Sb3#
      • 1...Qxc5!
    • 1.Bf6+?
      • 1...Qe5
        • 2.Sc6#
        • 2.Bxe5#
        • 2.Rxf4#
      • 1...gxf6!
    • 1.Qxb4+?
      • 1...Rc4
        • 2.Sb3#
        • 2.Qxc4#
      • 1...Bxb4!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sb3#
      • 1...Qxa5
        • 2.Bxc5#
      • 1...Sxd3
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • Q(h);N_GUARD::S(G)
    • Q(h);N_GUARD::S(G),XQ(h)
    • R(b);N_GUARD::S(G)
    • R(b);N_GUARD::S(G),XR(b)
    • R(b);N_GUARD,SBLOCK,XP(D)::S(A)
    • R(b);N_GUARD,N_SPINS(c)::S(G)
    • R(i);N_GUARD::R1(H),XR(i)
    • R(i);N_GUARD,XB(I)::R1(H)
    • B(g);S_CUTR(i)::R1(H)
    • S(f);S_CUTR(i)::R1(H)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • R(b);N_GUARD,SBLOCK,XP(D)::S(A)
        • Q(h);N_GUARD::S(G)
        • R(i);N_GUARD::R1(H)
      • Refutation
        • P(a);
    • Try
      • B(I);CHECK,XB(g)
      • Vars
        • R(b);XB(I)::S(G)
      • Refutation
        • Q(h);XB(I)
    • Try
      • B(I);CHECK
      • Refutation
        • P(j);XB(I)
    • Try
      • Q(E);CHECK,XS(c)
      • Refutation
        • B(g);XQ(E)
  • Actual
    • Q(E);N_PINS(c),P_PINR(b)
    • Threat
      • S(G)
    • Vars
      • Q(h);N_GUARD,XS(G)::B(I),XB(g)
      • S(c);N_GUARD,SBLOCK,XP(D)::S(A)
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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).