MESON Chess Problem Database

Problem Display
PID: 147434 (2Q3B1/1b2q3/8/1pbnpp2/1Bknr1NR/K2p3R/2p1P3/2Nr4 w - - 0 1)

Llorens Mach, Roman

1st Prize, SEPA, 1944

2Q3B1/1b2q3/8/1pbnpp2/1Bknr1NR/K2p3R/2p1P3/2Nr4

#2

9 + 13

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh4
      • 2.Qxc5#
    • 1...Qg5
      • 2.Qxc5#
    • 1...Qf6
      • 2.Qxc5#
    • 1...Qd8
      • 2.Qxc5#
    • 1...Qe6
      • 2.Qxc5#
    • 1...Qd7
      • 2.Qxc5#
    • 1...Qf7
      • 2.Qxc5#
    • 1...Qg7
      • 2.Qxc5#
    • 1...Qh7
      • 2.Qxc5#
    • 1...Qe8
      • 2.Qxc5#
    • 1...Rxc1
      • 2.exd3#
    • 1...Re1
      • 2.exd3#
    • 1...Rf1
      • 2.exd3#
    • 1...Rg1
      • 2.exd3#
    • 1...Rh1
      • 2.exd3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Rf4
      • 2.Se3#
    • 1...dxe2
      • 2.Rc3#
    • 1...d2
      • 2.Rc3#
  • Tries
    • 1.Sxe5+?
      • 1...Qxe5
        • 2.Qxc5#
      • 1...Rxe5!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Rc3#
      • 1...Rxd3+
        • 2.exd3#
      • 1...Sxe2
        • 2.Se3#
      • 1...Qe6
        • 2.Qxc5#
      • 1...Qf7
        • 2.Qxc5#
      • 1...Re3
        • 2.Sxe3#
      • 1...Sb3
        • 2.Se3#
      • 1...Sf3
        • 2.Se3#
      • 1...Sc6
        • 2.Bxd5#
      • 1...Se6
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 16
  • Sets
    • Q(m);N_GUARD,XR(G)::QAR1(H),XB(h)
    • Q(m);N_GUARD::QAR1(H),XB(h)
    • Q(m);N_GUARD,N_SPINS(i)::QAR1(H),XB(h)
    • R(a);N_GUARD,XS(A)::P(B),XP(c)
    • R(a);N_GUARD::P(B),XP(c)
    • R(f);N_GUARD::S(F),XR(f)
    • R(f);N_GUARD::S(F)
    • P(c);OGATE,XP(B)::R1(D)
    • P(c);OGATE::R1(D)
  • Tries
    • Try
      • S(F);CHECK,XP(j)
      • Vars
        • Q(m);XS(F)::QAR1(H),XB(h)
      • Refutation
        • R(f);N_SPINS(i),P_SPINS(e),XS(F)
  • Actual
    • R(D);XP(c)
    • Threat
      • R1(D)
    • Vars
      • R(a);CHECK,XR(D)::P(B),XR(a)
      • S(e);S_CUTR(f),XP(B)::S(F)
      • Q(m);N_GUARD,N_SPINS(i)::QAR1(H),XB(h)
      • R(f);N_GUARD,P_PINR(D)::S(F),XR(f)
      • S(e);S_CUTR(f)::S(F)
      • S(e);N_SPINB(h),S_CUTB(l)::B(I),XS(i)
      • S(e);N_SPINS(i),S_CUTQ(m),S_CUTR(f)::S(F),XP(j)
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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).