MESON Chess Problem Database

Problem Display
PID: 59928 (q1nR1K2/p3p3/3bP3/2Pb1Qp1/N1pk2N1/3P3n/BP3r2/4R1B1 w - - 0 1)

Simkhovich, Froim Markovich

5th Prize, Brisbane Courier, 1925

q1nR1K2/p3p3/3bP3/2Pb1Qp1/N1pk2N1/3P3n/BP3r2/4R1B1

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qe4#
    • 1...Sf4
      • 2.Bxf2#
    • 1...c3
      • 2.bxc3#
  • Tries
    • 1.Qxf2+?
      • 1...Kxd3
        • 2.Bb1#
        • 2.Qe2#
      • 1...Sxf2!
  • Keys
    • 1.Rd1!
      • threat
        • 2.dxc4#
      • 1...Sxg1
        • 2.Qxf2#
      • 1...cxd3
        • 2.Rxd3#
      • 1...Bf3
        • 2.Qe5#
      • 1...Be4
        • 2.dxe4#
      • 1...Bf4
        • 2.Qe4#
      • 1...Sf4
        • 2.Bxf2#
      • 1...c3
        • 2.bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);N_PINQ(I),P_SPINB(e)::QAR1(I)
    • S(b);N_GUARD,N_PINQ(I)::B(B),XR(a)
    • P(c);OGATE::P(D),XP(c)
  • Tries
    • Try
      • Q(I);CHECK,N_SPINQ(I),XR(a)
      • Refutation
        • S(b);P_SPINS(b),XQ(I)
  • Actual
    • R(A);
    • Threat
      • R(A)+P(E),XP(c)
    • Vars
      • S(b);N_GUARD,N_SPINR(a),XB(B)::QAB(I),XR(a)
      • P(c);OGATE,P_SPINP(c),XP(E)::R1(A),XP(c)
      • B(e);N_PINQ(I),P_SPINB(g)::QAB1(I)
      • B(e);OGATE,P_SPINB(g)::R(A)+P(E),XB(e)
      • B(g);N_PINQ(I),P_SPINB(e)::QAR1(I)
      • S(b);N_GUARD,N_PINQ(I)::B(B),XR(a)
      • P(c);OGATE::P(D),XP(c)
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).