MESON Chess Problem Database

Problem Display
PID: 190192 (bQ6/2KP1p1N/4p3/n3k3/1N2B2b/1p4P1/3PRP2/5r2 w - - 0 1)

Simon, Jeno

Magyar Sakkvilag, 1913

bQ6/2KP1p1N/4p3/n3k3/1N2B2b/1p4P1/3PRP2/5r2

#2

10 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb7
      • 2.Sc6#
  • Tries
    • 1.Bd3+?
      • 1...Kd4
        • 2.Qa7#
        • 2.Qb6#
      • 1...Be4!
    • 1.Bd5+?
      • 1...Kd4
        • 2.Qa7#
        • 2.Qb6#
      • 1...Kf5!
    • 1.Bg6+?
      • 1...Be4
        • 2.Rxe4#
      • 1...Kd4!
    • 1.Qh8+?
      • 1...Bf6
        • 2.Qxf6#
      • 1...f6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Kb6#
        • 2.Kc8#
        • 2.d4#
      • 1...Bd8+
        • 2.Kxd8#
      • 1...Bxg3
        • 2.Kb6#
        • 2.Kc8#
        • 2.Kd8#
      • 1...Bxe4
        • 2.Qb5#
      • 1...bxc2
        • 2.Qb2#
      • 1...Rd1
        • 2.Kb6#
        • 2.Kc8#
        • 2.f4#
      • 1...Be7
        • 2.d4#
      • 1...Bb7
        • 2.Kb6#
        • 2.d4#
      • 1...Sc4
        • 2.d4#
      • 1...Sc6
        • 2.Qb5#
      • 1...Sb7
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,S_CUTB(h)::S(E)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • B(F);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::R1(B),XB(h)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(J),XB(c)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • S(E);
    • Threat
      • DUALS(3)
    • Vars
      • B(c);CHECK::QAB(J)+K(G),XB(c)
      • B(h);N_GUARD,P_SPINB(h),XB(F)::QAR(J)
      • P(b);OGATE,XS(E)::QAB(J)
      • B(c);::P(A)
      • S(d);::P(A)
      • S(d);S_CUTB(h)::QAR(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).