MESON Chess Problem Database

Problem Display
PID: 2311 (7K/3p2N1/1p1k1p2/1P1Np1R1/3Pp3/1PR5/5B1p/Q6B w - - 0 1)

Feigl, Maximilian

Source?, 0000

7K/3p2N1/1p1k1p2/1P1Np1R1/3Pp3/1PR5/5B1p/Q6B

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qa3#
    • 1...exd4
      • 2.Bg3#
      • 2.Qa3#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sf5#
        • 2.Qa3#
      • 1...exd4
        • 2.Qa3#
      • 1...exf4
        • 2.Qa3#
      • 1...f5
        • 2.Sxf5#
        • 2.Qa3#
      • 1...Ke7!
    • 1.Sc7?
      • threat
        • 2.Sf5#
        • 2.Qa3#
      • 1...exd4
        • 2.Qa3#
      • 1...f5
        • 2.Sxf5#
        • 2.Qa3#
      • 1...Ke7!
    • 1.Rxe5?
      • threat
        • 2.Sf5#
        • 2.Se8#
        • 2.Qa3#
      • 1...f5
        • 2.Sxf5#
        • 2.Se8#
        • 2.Qa3#
      • 1...fxe5!
    • 1.Rf5?
      • 1...exd4
        • 2.Bg3#
        • 2.Qa3#
      • 1...e3
        • 2.Rxf6#
        • 2.Qa3#
      • 1...Kxd5!
    • 1.Qa8?
      • 1...exd4
        • 2.Bg3#
        • 2.Qa3#
        • 2.Qb8#
        • 2.Qf8#
      • 1...f5
        • 2.Rg6#
      • 1...e3
        • 2.Qa3#
        • 2.Qb8#
        • 2.Qf8#
      • 1...fxg5!
    • 1.dxe5+?
      • 1...Kxd5
        • 2.Rd3#
        • 2.Qd1#
        • 2.Qa8#
      • 1...fxe5!
  • Keys
    • 1.Rd3!
      • 1...Kxd5
        • 2.dxe5#
      • 1...exd3
        • 2.Qa3#
      • 1...exd4
        • 2.Qa3#
      • 1...fxg5
        • 2.dxe5#
      • 1...e3
        • 2.Qa3#
      • 1...f5
        • 2.dxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB(A)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(F)::QAB(A)
        • P(c);XS(H)::QAB(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(F)::QAB(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(I);XP(c)
      • Threat
        • DUALS(3)
      • Refutation
        • P(f);XR(I)
    • Try
      • R(I);
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(b),XS(H)
    • Try
      • Q(A);
      • Vars
        • P(f);OGATEB::R(I)
      • Refutation
        • P(f);XR(I)
    • Try
      • P(F);CHECK,XP(c)
      • Refutation
        • P(f);XP(F)
  • Actual
    • R(E);
    • Vars
      • K(e);P-FLIGHT,P_SPINP(b),XS(H)::R(E)+P(F),XP(c)
      • P(b);XR(E)::QAB(A)
      • P(c);XP(F)::QAB(A)
      • P(f);N_GUARD,XR(I)::P(F),XP(c)
      • P(b);::QAB(A)
      • P(f);N_GUARD::P(F),XP(c)
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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).