MESON Chess Problem Database

Problem Display
PID: 189751 (K2R2bq/2b2p2/1P6/Q2N1NR1/P3k2r/2B3pr/n1P3P1/8 w - - 0 1)

Simay-Molnar, Aladar

3rd Prize, Alkotmany, 1912

K2R2bq/2b2p2/1P6/Q2N1NR1/P3k2r/2B3pr/n1P3P1/8

#2

11 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb6
      • 2.Sd6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Bxd8
      • 2.Sd6#
  • Tries
    • 1.Sf6+?
      • 1...Kf4
        • 2.Bd2#
      • 1...Qxf6!
    • 1.Bxh8?
      • threat
        • 2.Qe1#
      • 1...Bxb6
        • 2.Sd6#
        • 2.Re8#
      • 1...Bxd8
        • 2.Sd6#
      • 1...Bf4
        • 2.Sf6#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Sc1
        • 2.Qb4#
      • 1...Sc3
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Rh1!
    • 1.Re8+?
      • 1...Be5
        • 2.Sd6#
      • 1...Qe5!
    • 1.Qb4+?
      • 1...Qd4
        • 2.Qxd4#
      • 1...Sxb4!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qe1#
      • 1...Kxe5
        • 2.Re8#
      • 1...Bxb6
        • 2.Sd6#
      • 1...Bxd8
        • 2.Sd6#
      • 1...Qh5
        • 2.Sf6#
      • 1...Rh1
        • 2.Sxg3#
      • 1...Bd6
        • 2.Sxd6#
      • 1...Sc1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD,XP(I)::S(G)
    • B(f);N_GUARD::S(G),XB(f)
    • B(f);N_GUARD,XR(K)::S(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::B(C)
      • Refutation
        • Q(i);XS(F)
    • Try
      • B(C);XQ(i)
      • Threat
        • QAR(E)
      • Vars
        • B(f);N_GUARD,XR(K)::S(G)
        • B(f);SBLOCK::S(F)
        • B(f);N_GUARD::S(G),XB(f)
        • S(a);N_GUARD::QAR(E)
        • S(a);N_GUARD::QAR(E),XS(a)
      • Refutation
        • R(c);
    • Try
      • R(K);CHECK
      • Vars
        • B(f);P_SPINB(f)::S(G)
      • Refutation
        • Q(i);P_SPINQ(i)
    • Try
      • Q(E);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAR1(E),XQ(i)
      • Refutation
        • S(a);XQ(E)
  • Actual
    • B(C);
    • Threat
      • QAR(E)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XB(C)::R(K)
      • B(f);N_GUARD,XP(I)::S(G)
      • B(f);N_GUARD,XR(K)::S(G)
      • Q(i);N_GUARD::S(F)
      • R(c);N_GUARD::S(G),XP(b)
      • B(f);N_GUARD::S(G),XB(f)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(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).