MESON Chess Problem Database

Problem Display
PID: 120724 (1N2k2r/1P3r1R/6n1/K2PB1QB/5RN1/8/8/8 w k - 0 1)

Schlegl, Gerhard

Els Escacs a Catalunya, 1930

1N2k2r/1P3r1R/6n1/K2PB1QB/5RN1/8/8/8

#2

10 + 4

56 The Problemist 1938
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Qd8#
    • 1...Rxf4
      • 2.Qe7#
    • 1...Rf5
      • 2.Qe7#
    • 1...Rxb7
      • 2.Rxh8#
    • 1...Rc7
      • 2.Rxh8#
    • 1...Rd7
      • 2.Rxh8#
    • 1...Re7
      • 2.Rxh8#
      • 2.Qxe7#
    • 1...Rff8
      • 2.Qe7#
    • 1...Sxf4
      • 2.Rxh8#
    • 1...Sh4
      • 2.Rxh8#
    • 1...Sxe5
      • 2.Rxh8#
    • 1...Sf8
      • 2.Bxf7#
    • 1...0-0
      • 2.Rh8#
  • Tries
    • 1.Rxh8+?
      • 1...Rf8
        • 2.Bxg6#
        • 2.Rfxf8#
        • 2.Rhxf8#
      • 1...Sf8
        • 2.Bxf7#
      • 1...Sxh8!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qd8#
      • 1...Kd7
        • 2.Sf6#
      • 1...Kf8
        • 2.Qd8#
        • 2.b8Q#
        • 2.b8R#
      • 1...0-0
        • 2.Rh8#
      • 1...Rf6
        • 2.b8Q#
        • 2.b8R#
      • 1...Rd7
        • 2.Rxh8#
      • 1...Re7
        • 2.Rxe7#
        • 2.Qxe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • K(c);P-FLIGHT,P_SPINR(b)::QAR2(F)
    • R(b);N_GUARD,P_SPINS(a),XR(A)::QAR1(F)
    • R(b);N_GUARD,P_SPINS(a)::QAR1(F)
    • R(b);N_GUARD,P_SPINS(a),XP(H)::R(I),XR(d)
    • R(b);N_GUARD,P_SPINS(a)::R(I),XR(d)
    • S(a);N_GUARD,P_SPINR(b),XR(A)::R(I),XR(d)
    • S(a);N_GUARD,P_SPINR(b)::R(I),XR(d)
    • S(a);N_GUARD,P_SPINR(b),XB(E)::R(I),XR(d)
    • S(a);OGATE,P_SPINR(b),SBLOCK::B(G),XR(b)
    • K(c);0-0,P_SPINS(a)::R1(I)
  • Tries
    • Try
      • R(I);CHECK,XR(d)
      • Vars
        • S(a);OGATE,P_SPINR(b),P_SPINS(a)::B(G),XR(b)
      • Refutation
        • S(a);P_SPINR(b),XR(I)
  • Actual
    • S(J);
    • Threat
      • QAR1(F)
    • Vars
      • K(c);P_SPINR(b),S_FLIGHT::S(B)
      • K(c);0-0,P_SPINS(a)::R1(I)
      • R(b);P_SPINS(a)::P=Q
      • R(b);N_GUARD,P_SPINS(a),SBLOCK::R(I),XR(d)
      • S(a);N_GUARD,P_SPINR(b)::QAR1(F),XS(a)
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).