MESON Chess Problem Database

Problem Display
PID: 109531 (8/1b3R2/3PP1p1/Q5p1/p1N1kNp1/q3PnB1/1pn1B2b/3R3K w - - 0 1)

Trommler, Sven

Bata-80 JT, 1888

8/1b3R2/3PP1p1/Q5p1/p1N1kNp1/q3PnB1/1pn1B2b/3R3K

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Bd3#
    • 1...Qc5
      • 2.Bd3#
    • 1...Qa1
      • 2.Bd3#
    • 1...Qa2
      • 2.Bd3#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Ba6
      • 2.Qd5#
    • 1...Ba8
      • 2.Qxa8#
    • 1...Bc8
      • 2.Qd5#
    • 1...Se1
      • 2.Qe5#
    • 1...Sg1
      • 2.Qe5#
    • 1...Sd2
      • 2.Qe5#
    • 1...Sd4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...gxf4
      • 2.Rxf4#
  • Tries
    • 1.Bxf3+?
      • 1...gxf3
        • 2.Qe5#
      • 1...Kxf3!
    • 1.Rd4+?
      • 1...Sfxd4
        • 2.Qe5#
      • 1...Scxd4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Qc5
        • 2.Sc3#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Se5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(d);N_GUARD::B(C)
    • Q(d);N_GUARD,P_PINR(A)::B(C)
    • Q(d);N_GUARD::B(C),XQ(d)
    • B(k);N_GUARD::QAB1(H),XB(k)
    • B(k);N_GUARD::QAB1(H)
    • B(k);OGATEB::QAB(H),XB(k)
    • S(e);N_GUARD::QAR1(H)
    • S(e);N_GUARD::QAR1(H),XS(e)
    • P(i);OGATE,XS(G)::R1(K),XP(i)
  • Tries
    • Try
      • B(C);CHECK,XS(e)
      • Vars
        • P(h);SBLOCK,XB(C)::QAR1(H)
      • Refutation
        • K(g);S_FLIGHT,XB(C)
    • Try
      • R(A);CHECK
      • Vars
        • S(e);XR(A)::QAR1(H)
      • Refutation
        • S(b);XR(A)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • B(k);OGATE,XS(G)::QAB1(H),XB(k)
      • Q(d);N_GUARD::S(G)
      • Q(d);N_GUARD::S(G),XQ(d)
      • S(e);N_GUARD::S(F)
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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).