MESON Chess Problem Database

Problem Display
PID: 148179 (4R3/4p3/8/Kp6/1BNp4/p1rp1Q2/1N1q4/1n2k3 w - - 0 1)

Hertmann, Sandor

L'Italia Scacchistica, 1930

4R3/4p3/8/Kp6/1BNp4/p1rp1Q2/1N1q4/1n2k3

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qf4
      • 2.Sxd3#
    • 1...Qg5
      • 2.Sxd3#
    • 1...Qh6
      • 2.Sxd3#
    • 1...Qf2
      • 2.Qd1#
    • 1...Qg2
      • 2.Sxd3#
    • 1...Qh2
      • 2.Sxd3#
    • 1...Rc1
      • 2.Sxd3#
      • 2.Rxe7#
    • 1...Rc2
      • 2.Sxd3#
      • 2.Rxe7#
    • 1...Rb3
      • 2.Rxe7#
    • 1...Rxc4
      • 2.Sxd3#
      • 2.Rxe7#
  • Tries
    • 1.Rxe7+?
      • 1...Qe3
        • 2.Sxd3#
      • 1...Qe2!
    • 1.Rf8?
      • threat
        • 2.Qf1#
      • 1...Qf2
        • 2.Qd1#
        • 2.Qxf2#
      • 1...Qf4
        • 2.Sxd3#
      • 1...Qg2
        • 2.Sxd3#
        • 2.Qd1#
      • 1...Qe2!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Bh4#
      • 1...Rc1+
        • 2.Bb4#
      • 1...Rc2+
        • 2.Bb4#
      • 1...Rb3+
        • 2.Bb4#
      • 1...Rxc4+
        • 2.Bb4#
      • 1...Qf2
        • 2.Qd1#
      • 1...Qg5
        • 2.Bxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD,P_SPINR(e)::S(A),XP(f)
    • Q(c);N_GUARD,P_SPINR(e),SBLOCK::QAR1(B)
    • R(e);P_PINB(C),P_SPINQ(c)::R(F),XP(i)
  • Tries
    • Try
      • R(F);CHECK,XP(i)
      • Vars
        • Q(c);P_SPINQ(c),P_SPINR(e)::S(A),XP(f)
      • Refutation
        • Q(c);P_SPINQ(c),P_SPINR(e)
    • Try
      • R(F);N_PINP(i)
      • Threat
        • QAR1(B)
      • Vars
        • Q(c);N_GUARD,P_SPINR(e)::S(A),XP(f)
      • Refutation
        • Q(c);P_SPINR(e)
  • Actual
    • B(C);XP(i)
    • Threat
      • R(F)+B(C),DCHECK
    • Vars
      • R(e);CHECK,S_CUTQ(c),S_CUTQ(c)::R(F)+B(C)
      • R(e);CHECK,S_CUTQ(c),S_CUTQ(c),XS(D)::R(F)+B(C)
      • Q(c);N_GUARD,SBLOCK::QAR1(B)
      • Q(c);N_GUARD::R(F)+B(C),XQ(c)
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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).