MESON Chess Problem Database

Problem Display
PID: 183126 (8/2BR4/5N2/2pp1P2/Pp1k1KQ1/2p1n2p/2PbpPp1/3R2n1 w - - 0 1)

Petrnousek, Antonin

HM., Western Daily Mercury, 1907

8/2BR4/5N2/2pp1P2/Pp1k1KQ1/2p1n2p/2PbpPp1/3R2n1

#2

10 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4+
      • 2.Kg3#
    • 1...Sxf5+
      • 2.Kxf5#
    • 1...c4
      • 2.Bb6#
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sxe3#
      • 1...Sxd1+
        • 2.Se3#
      • 1...Sf1+
        • 2.Se3#
      • 1...Sxc2+
        • 2.Se3#
      • 1...Sc4+
        • 2.Kg3#
      • 1...Sxg4+
        • 2.Se3#
      • 1...Sxd5+
        • 2.Kg3#
      • 1...Sxf5+
        • 2.Kxf5#
      • 1...Kc4
        • 2.Sb6#
      • 1...c4
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);CHECK,N_GUARD,SBLOCK::QAR(F)+K(E)
    • S(f);CHECK,XP(G)::QAR(F)+K(E),XS(f)
    • P(j);OGATEB,SBLOCK::B(I)
  • Actual
    • S(H);XP(k)
    • Threat
      • R(J)+S(H),XS(f)
    • Vars
      • S(f);CHECK,N_SPINB(b),XR(A)::R(J)+S(H)
      • S(f);CHECK::R(J)+S(H)
      • S(f);CHECK,XP(B)::R(J)+S(H)
      • S(f);CHECK,N_GUARD,SBLOCK::QAR(F)+K(E)
      • S(f);CHECK,XQ(F)::R(J)+S(H)
      • S(f);CHECK,N_GUARD,P_SPINS(f),XS(H)::QAR(F)+K(E)
      • S(f);CHECK,XP(G)::QAR(F)+K(E),XS(f)
      • K(i);N_SPINB(b),P-FLIGHT::S(H)
      • P(j);OGATEB,SBLOCK::B(I)
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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).