MESON Chess Problem Database

Problem Display
PID: 203376 (1b6/p3R1B1/n1p2r1p/Q1Nr1p2/b1pk4/5R1q/6BN/2K5 w - - 0 1)

Hertmann, Sandor

2nd HM., Gyoeri Sakkoer, 1924

1b6/p3R1B1/n1p2r1p/Q1Nr1p2/b1pk4/5R1q/6BN/2K5

#2

8 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Sxf3#
    • 1...Rxc5
      • 2.Qd2#
    • 1...Rd6
      • 2.Rf4#
    • 1...Bf4+
      • 2.Rxf4#
    • 1...Sxc5
      • 2.Qc3#
    • 1...Sc7
      • 2.Rf4#
    • 1...c3
      • 2.Qxc3#
    • 1...f4
      • 2.Re4#
  • Tries
    • 1.Sb3+?
      • 1...cxb3
        • 2.Qc3#
      • 1...Bxb3!
    • 1.Se6+?
      • 1...Ke4
        • 2.Qe1#
      • 1...Ke5!
  • Keys
    • 1.Re2!
      • threat
        • 2.Se6#
      • 1...Bf4+
        • 2.Rxf4#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Rxc5
        • 2.Qd2#
      • 1...Sxc5
        • 2.Qc3#
      • 1...Re5
        • 2.Rd2#
      • 1...Rd6
        • 2.Rf4#
      • 1...c3
        • 2.Qxc3#
      • 1...Be5
        • 2.Rd2#
      • 1...Sc7
        • 2.Rf4#
      • 1...f4
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);XR(D)::S(C),XQ(a)
    • R(e);SBLOCK,XS(F)::QAR2(E)
    • R(e);S_CUTB(l)::R(D)
    • B(l);CHECK,N_GUARD::R(D),XB(l)
    • S(g);SBLOCK,XS(F)::QAB1(E)
    • S(g);S_CUTB(l)::R(D)
    • P(c);::QAB1(E),XP(c)
    • P(f);N_GUARD::R1(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(c);XS(F)::QAB1(E)
      • Refutation
        • B(b);XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINR(i),P-FLIGHT::QAR(E)
      • Refutation
        • K(d);N_SPINR(i),P_SPINR(e),S_FLIGHT
  • Actual
    • R(G);
    • Threat
      • S(F)
    • Vars
      • B(l);CHECK,N_GUARD::R(D),XB(l)
      • Q(a);XR(D)::S(C),XQ(a)
      • R(e);SBLOCK,XS(F)::QAR2(E)
      • S(g);SBLOCK,XS(F)::QAB1(E)
      • R(e);N_SPINR(i),SBLOCK::R(G)
      • R(e);S_CUTB(l)::R(D)
      • P(c);::QAB1(E),XP(c)
      • B(l);N_SPINR(i),SBLOCK::R(G)
      • S(g);S_CUTB(l)::R(D)
      • P(f);N_GUARD::R1(G)
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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).