MESON Chess Problem Database

Problem Display
PID: 206589 (6n1/8/2pQ1p2/p1P5/P1N1p3/B1kp1p2/KN1R1P2/8 w - - 0 1)

Hertmann, Sandor

Pesti Naplo, 1925

6n1/8/2pQ1p2/p1P5/P1N1p3/B1kp1p2/KN1R1P2/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sh6
      • 2.Qxf6#
    • 1...Se7
      • 2.Qxf6#
    • 1...e3
      • 2.Qxd3#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rc1#
      • 1...d2
        • 2.Qxd2#
      • 1...Kc2!
    • 1.Rc2+?
      • 1...dxc2
        • 2.Qd2#
      • 1...Kxc2!
    • 1.Re2?
      • 1...dxe2
        • 2.Qd2#
      • 1...d2
        • 2.Qxd2#
      • 1...Sh6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qxf6#
      • 1...e3
        • 2.Qxd3#
      • 1...f5
        • 2.Qe5#
      • 1...fxe2!
    • 1.Rxd3+?
      • 1...exd3
        • 2.Qxd3#
      • 1...Kc2!
  • Keys
    • 1.Qf4!
      • 1...Kd4
        • 2.Rxd3#
      • 1...Sh6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qxf6#
      • 1...e3
        • 2.Sd1#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::QAB(I),XP(g)
    • P(d);N_GUARD::QAR1(I),XP(b)
    • P(g);N_GUARD::QAB(I)
  • Tries
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • P(b);OGATE::QAB1(I),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • P(b);OGATE,XR(C)::QAB1(I)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • P(b);OGATE,XR(C)::QAB1(I)
        • P(b);OGATE::QAB1(I),XP(b)
        • S(h);N_GUARD::QAB(I),XP(g)
        • P(d);N_GUARD::QAR1(I),XP(b)
        • P(g);N_GUARD::QAB(I)
      • Refutation
        • P(c);XR(C)
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • P(d);OGATE,XR(C)::QAR1(I),XP(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
      • S(h);N_GUARD::QAB(I),XP(g)
      • P(d);::S(B)
      • P(g);N_GUARD::QAB(I)
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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).